View Filing Data

Print Document View Excel Document

Basis of Presentation - Reclassification (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Amount reclassified		$ 1,192
Repayment of revolving loans	$ (7,836)	(8,662)
Proceeds from revolving loans	18,792	9,854
Total revenue	93,308	98,683
Other income, net	$ 345	$ 0

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 16,083	$ 15,915
Cash - restricted	3,489	4,666
Accounts receivable, net	108,109	103,892
Current portion of retainage receivable	16,040	16,459
Accounts receivable - affiliates	24,919	18,776
Prepaid expenses and other current assets	11,879	9,340
Income tax receivable	2,176	2,256
Total current assets	182,695	171,304
Property and equipment, net	10,167	11,895
Cash - restricted, net of current portion	3,921	4,401
Operating lease right-of-use assets	15,781	17,451
Retainage receivable	6,433	5,695
Acquired intangibles, net	205	232
Goodwill	44,591	48,024
Investments	1,628	1,711
Deferred income tax assets	3,074	3,800
Other assets	3,060	5,038
Total assets	271,555	269,551
Liabilities and Stockholders’ Equity
Current maturities of notes payable and long-term debt	3,071	1,792
Accounts payable and accrued expenses	66,394	65,172
Income taxes payable	3,586	3,152
Current portion of deferred revenue	9,090	10,773
Current portion of operating lease liabilities	5,481	5,736
Other current liabilities	6,065	4,876
Total current liabilities	93,687	91,501
Notes payable and long-term debt, net of current maturities	50,470	41,150
Retainage payable	1,581	1,551
Deferred income taxes	418	419
Deferred revenue	1,437	3,041
Non-current operating lease liabilities	15,850	17,030
Other liabilities	4,882	4,631
Total liabilities	168,325	159,323
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value; 1,000 shares authorized, none issued	0	0
Common stock, $0.0001 par value; 100,000 shares authorized, 62,530 shares and 62,708 shares issued at March 31, 2020 and December 31, 2019, respectively	6	6
Additional paid-in capital	213,263	212,759
Accumulated deficit	(77,941)	(71,360)
Accumulated other comprehensive loss	(3,913)	(3,817)
Less treasury stock of 6,807 and 6,546 at March 31, 2020 and December 31, 2019, respectively	(29,056)	(28,231)
Hill International, Inc. share of equity	102,359	109,357
Noncontrolling interests	871	871
Total equity	103,230	110,228
Total liabilities and stockholders’ equity	$ 271,555	$ 269,551

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (6,422)	$ (2,068)
Foreign currency translation adjustment, net of tax	(255)	(1,854)
Comprehensive loss	(6,677)	(3,922)
Less: Comprehensive (loss) income attributable to non-controlling interests	0	19
Comprehensive loss attributable to Hill International, Inc.	$ (6,677)	$ (3,941)

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686

+ Details

Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 399	$ 241
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options granted (in shares)	723,000	758,000
Number of common stock issuable per each award (in shares)	1
Award vesting period	3 years
Weighted average price per share (in dollars per share)	$ 3.28	$ 3.23
Deferred Stock Units (DSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options granted (in shares)	8,000
Number of common stock issuable per each award (in shares)	1
Weighted average price per share (in dollars per share)	$ 3.18	$ 3.15
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	1,616,000	1,417,000
Weighted average exercise price of outstanding options (in dollars per share)	$ 4.03	$ 4.33
Options lapsed (in shares)	263,000	525,000
Weighted average exercise price of options lapsed (in dollars per share)	$ 3.67	$ 4.42

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2020

Mar. 31, 2019

Cash flows from operating activities:

Net loss

$ (6,422)

$ (2,068)

Adjustments to reconcile net loss to net cash provided by (used in):

Depreciation and amortization

2,424

791

(Recovery) provision for bad debts

(479)

934

Amortization of deferred loan fees

175

179

Deferred tax expense (benefit)

490

(349)

Share-based compensation

399

241

Operating lease right-of-use assets

1,575

1,408

Foreign currency remeasurement losses (gains)

4,376

(511)

Changes in operating assets and liabilities:

Accounts receivable

(4,203)

5,390

Accounts receivable - affiliate

(6,143)

(218)

Prepaid expenses and other current assets

(2,608)

551

Income taxes receivable

(45)

(199)

Retainage receivable

(755)

(1,247)

Other assets

1,231

690

Accounts payable and accrued expenses

1,964

6,851

Income taxes payable

431

1,020

Deferred revenue

(2,994)

(3,423)

Operating lease liabilities

(1,323)

(1,442)

Other current liabilities

696

Retainage payable

Other liabilities

250

(222)

Net cash (used in) provided by continuing operations

(10,932)

8,458

Cash flows from investing activities:

Purchase of property and equipment

(833)

(873)

Net cash used in investing activities

(833)

(873)

Cash flows from financing activities:

Repayment of term loans

(217)

(266)

Proceeds from revolving loans

18,792

9,854

Repayment of revolving loans

(7,836)

(8,662)

Proceeds from stock issued under employee stock purchase plan

Net cash provided by financing activities

10,789

960

Effect of exchange rate changes on cash, cash equivalents and restricted cash

(513)

(1,033)

Net (decrease) increase in cash, cash equivalents and restricted cash

(1,489)

7,512

Cash, cash equivalents and restricted cash — beginning of period

24,982

23,107

Cash, cash equivalents and restricted cash — end of period

23,493

30,619

Supplemental disclosures of cash flow information:

1,150

1,414

Income taxes paid

601

Cash paid for amounts included in the measurement of lease liabilities

1,910

1,814

Right-of-use assets obtained in exchange for operating lease liabilities

^[1]

$ 0

$ 18,178

[1]	(1) Amount for the three months ended March 31, 2019 relates to the Company's January 1, 2019 adoption of Accounting Standards Update 2016-2, Leases (Topic 842).

Notes Payable and Long-Term Debt - Summary of Outstanding Debt Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 01, 2019	Nov. 30, 2019
Debt Instrument [Line Items]
Total notes payable and long-term debt, gross	$ 54,142	$ 43,583
Less: unamortized discount and deferred financing costs related to Société Générale 2017 Term Loan Facility	(601)	(641)
Notes payable and long-term debt	53,541	42,942
Current portion of notes payable	3,258	1,972
Current portion of unamortized debt discount and deferred financing costs	(187)	(180)
Current maturities of notes payable and long-term debt	3,071	1,792
Notes payable and long-term debt, net of current maturities	$ 50,470	$ 41,150
Hill International, Inc. - Société Générale 2017 Term Loan Facility \| Secured Debt
Debt Instrument [Line Items]
Variable interest rate	7.86%	7.92%
Total notes payable and long-term debt, gross	$ 29,175	$ 29,250
Hill International, Inc. - Société Générale Domestic Revolving Credit Facility (2) \| Secured Debt
Debt Instrument [Line Items]
Variable interest rate	6.18%	6.27%
Total notes payable and long-term debt, gross	$ 18,400	$ 9,400
Hill International N.V.. - Société Générale International Revolving Credit Facility (3) \| Secured Debt
Debt Instrument [Line Items]
Variable interest rate	4.14%	4.16%
Total notes payable and long-term debt, gross	$ 2,811	$ 2,302
Hill International, Inc. - First Abu Dhabi Bank (FAB) PJSC Overdraft Credit Facility \| Unsecured Debt
Debt Instrument [Line Items]
Variable interest rate	5.79%	5.81%
Total notes payable and long-term debt, gross	$ 1,997	$ 593
Hill International Brasil S.A. - Revolving Credit Facility \| Unsecured Debt
Debt Instrument [Line Items]
Fixed interest rate	2.80%	3.24%	2.80%	3.30%
Total notes payable and long-term debt, gross	$ 386	$ 498
Hill International Spain SA - Bankia, S.A. and Bankinter, S.A \| Unsecured Debt
Debt Instrument [Line Items]
Fixed interest rate	2.21%	2.21%
Total notes payable and long-term debt, gross	$ 907	$ 1,054
Philadelphia Industrial Development Corporation Loan \| Unsecured Debt
Debt Instrument [Line Items]
Fixed interest rate	2.79%	2.79%
Total notes payable and long-term debt, gross	$ 466	$ 486

Goodwill

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The following table summarizes the changes in the Company’s carrying value of goodwill during the three months ended March 31, 2020:




Balance, December 31, 2019	$	48,024
Translation adjustments ⁽¹⁾	(3,433		)
Balance, March 31, 2020	$	44,591

(1) The translation adjustment was calculated based on the foreign currency exchange rates as of March 31, 2020.

The Company performed its 2019 annual impairment test effective July 1, 2019, and noted no impairment. Based on the valuation as of July 1, 2019, the fair value of the Company exceeded its carrying value. The Company performs its annual impairment test during the second half of each year unless events or circumstances indicate an impairment may have occurred before that time.

Despite the excess fair value identified in our 2019 impairment assessment, the Company determined that the significant decline in its market capitalization as a result of the COVID-19 pandemic indicated that an impairment loss may have been incurred. The Company bypassed the qualitative assessment and proceeded directly to performing the quantitative goodwill impairment test. The quantitative goodwill impairment test concluded that the fair value of the Company (reporting unit) exceeded its carrying amount at March 31, 2020, and therefore, goodwill is not considered impaired.

The Company’s changes in estimates and assumptions, including decreases in stock price and market capitalization, could materially affect the determination of fair value and/or conclusions on goodwill impairment. As a result of recent events, including market volatility and the impact on the global economy, it is at least reasonably possible that changes in one or more of those assumptions could result in impairment of our goodwill in future periods.

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate (as a percent)	(33.30%)	(112.50%)
Reserve for uncertain tax positions	$ 4,582		$ 4,615
Income tax expense related to interest and penalties	$ 3	$ 2

Basis of Presentation (Policies)	3 Months Ended
Basis of Presentation (Policies)	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary	Summary The accompanying unaudited interim consolidated financial statements were prepared in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") pertaining to reports on Form 10-Q and should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Accordingly, they do not include all of the information and footnotes required by U.S. generally accepted accounting principles ("U.S. GAAP") for complete financial statements. In the opinion of management, these statements include all adjustments (consisting only of normal, recurring adjustments) necessary for a fair presentation of the consolidated financial statements. The consolidated financial statements include the accounts of Hill and its wholly and majority-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The interim operating results are not necessarily indicative of the results for a full year.
Reclassifications	Reclassification A reclassification was made in the presentation of the consolidated statements of cash flow for the three months ended March 31, 2019. Net borrowings on revolving loans previously reported as $1,192 was broken out between repayments of revolving loans and proceeds from revolving loans of $(8,662) and $9,854, respectively, to conform to current year presentation. Certain back-office expenses and foreign currency translation gains and losses that had previously been included in the individual regions in the operating profit/(loss) table presentation are currently being included within the corporate costs line item on the operating profit/(loss) tables herein. The related 2019 prior period operating profit (loss) by geographic region and corporate costs have been recast to reflect this change. This change only affects the presentation in the operating profit/(loss) tables and has no impact on total operating profit/(loss) reported. The Company's Consolidated Statements of Operations for the three months ended March 31, 2019 reflects a change in the presentation of revenue. Total Revenue of $98,683 for the three months ended March 31, 2019 was broken out between consulting fee revenue ("CFR") and reimbursable expenses to conform to current year presentation. CFR is the revenue, excluding reimbursable costs. The Company believes that CFR is an important measure because it represents the revenue on which gross profit is earned.
Foreign Currency Translations and Transactions	Foreign Currency Translations and Transactions Assets and liabilities of all foreign operations are translated at period-end rates of exchange while revenues and expenses are translated at the average monthly exchange rates. Gains or losses resulting from translating foreign currency financial statements are accumulated in a separate component of stockholders’ equity titled accumulated other comprehensive loss until the entity is sold or substantially liquidated. Gains or losses arising from foreign currency transactions (transactions denominated in a currency other than the entity’s local currency), including those resulting from intercompany transactions, are reflected in selling, general and administrative expenses in the consolidated statements of operations. The impact of foreign exchange on long-term intercompany loans, for which repayment has not been scheduled or planned and permanent equity has been elected, are recorded in accumulated other comprehensive loss on the consolidated balance sheet.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash equivalents and accounts receivable. The Company maintains its cash accounts with high quality financial institutions. Although the Company believes that the financial institutions with which it does business will be able to fulfill their commitments, there is no assurance that those institutions will be able to continue to do so.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The allowance for doubtful accounts is an estimate prepared by management based on identification of the collectability of specific accounts and the overall condition of the receivable portfolios. When evaluating the adequacy of the allowance for doubtful accounts, the Company specifically analyzes trade receivables, including retainage receivable, historical bad debts, client credits, client concentrations, current economic trends and changes in client payment terms. If the financial condition of clients were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. Likewise, should the Company determine that it would be able to realize more of its receivables in the future than previously estimated, an adjustment to the allowance would increase earnings in the period such determination was made. The allowance for doubtful accounts is reviewed on a quarterly basis and adjustments are recorded as deemed necessary.
Retainage Receivable and Revenue Recognition	Revenue Recognition The Company generates revenue primarily from providing professional services to its clients under various types of contracts. In providing these services, the Company may incur reimbursable expenses, which consist principally of amounts paid to subcontractors and other third parties and travel and other job related expenses that are contractually reimbursable from clients. The Company includes reimbursable expenses in computing and reporting its total revenue as long as the Company remains responsible to the client for the fulfillment of the contract and for the overall acceptability of all services provided. If estimated total costs on any contract project a loss, the Company charges the entire estimated loss to operations in the period the loss becomes known. The cumulative effect of revisions to revenue, estimated costs to complete contracts, including penalties, incentive awards, change orders, claims, anticipated losses, and others are recorded in the accounting period in which the events indicating a loss are known and the loss can be reasonably estimated. These loss projects are re-assessed for each subsequent reporting period until the project is complete. Such revisions could occur at any time and the effects may be material. See Note 4 - Revenue from Contracts with Clients for more detail, regarding how the Company recognizes revenue under each type of its contractual arrangements. Retainage Receivable Retainage receivable represents balances billed but not paid by clients pursuant to retainage provisions in certain contracts and will be due upon completion of specific tasks or the completion of the contract.
Income Taxes	Income Taxes The Company estimates income taxes in each of the jurisdictions in which it operates. This process involves estimating its actual current tax exposure together with assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within the Company’s consolidated balance sheets. The Company assesses the likelihood that the deferred tax assets will be recovered from future taxable income and to the extent it believes recovery is not likely, the Company establishes a valuation allowance. To the extent the Company establishes a valuation allowance in a period, it must include an expense within the tax provision in the consolidated statements of operations. The Company has recorded a valuation allowance to reduce the deferred tax asset to an amount that is more likely than not to be realized in future years. If the Company determines in the future that it is “more likely than not” (i.e., a likelihood greater than 50 percent) to be allowed by the tax jurisdiction based solely on the technical merits of the position, that the deferred tax assets subject to the valuation allowance will be realized, then the previously provided valuation allowance will be adjusted. The Company recognizes a tax benefit in the financial statements for an uncertain tax position only if management’s assessment is that the position is more likely than not that the benefit will be ultimately realized. The term “tax position” refers to a position in a previously filed tax return or a position expected to be taken in a future tax return that is reflected in measuring current or deferred income tax assets and liabilities for interim or annual periods.
Restricted Cash	Restricted Cash Restricted cash primarily represents cash collateral required to be maintained in foreign bank accounts to serve as collateral for letters of credit, bonds or guarantees on certain projects. The cash will remain restricted until the respective project has been completed, which typically is greater than one year.
Earnings (loss) per Share	Earnings (loss) per Share Basic earnings (loss) per common share have been computed using the weighted-average number of shares of common stock outstanding during the period. Diluted earnings (loss) per common share incorporates the incremental shares issuable upon the assumed exercise of stock options, the assumed vesting of stock and deferred and restricted stock unit awards using the treasury stock method, if dilutive. The Company has outstanding options to purchase approximately 1,616 shares and 1,417 shares at March 31, 2020 and 2019, respectively. In addition, the Company had 789 and 471 restricted and deferred stock units outstanding at March 31, 2020 and 2019, respectively. These awards were excluded from the calculation of diluted loss per share for the three months ended March 31, 2020 and 2019 because they were anti-dilutive.
New Accounting Pronouncements	New Accounting Pronouncements Changes to U.S. GAAP are typically established by the Financial Accounting Standards Board (“FASB”) in the form of accounting standards updates (“ASUs”) to the FASB’s Accounting Standards Codification (“ASC”). The Company considers the applicability and impact of all ASUs and, based on its assessment, determined that any recently issued or proposed ASUs not listed below are either not applicable to the Company or adoption will have minimal impact on its consolidated financial statements. For additional information with respect to new accounting pronouncements and the impact of these pronouncements on our consolidated financial statements, see Note 3 to the consolidated financial statements in Item 8 of Form 10-K for the year ended December 31, 2019 filed with the SEC on March 26, 2020. See update below. Recently Adopted Accounting Pronouncements In January 2017, the FASB issued ASU 2017-4, Intangibles - Goodwill and Other (Topic 350), which removes step 2 from the goodwill impairment test. As a result, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting units’ fair value. The guidance is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for annual or interim goodwill impairment tests performed on testing dates after January 1, 2017, and the prospective transition method should be applied. The Company adopted this guidance on January 1, 2020 and it did not materially impact its consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The amendments in this update align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by the amendments in this update. The amendments in this update are effective for public business entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption of the amendments in this update is permitted, including adoption in any interim period, for all entities. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted this guidance on January 1, 2020 on a prospective basis and will begin to capitalize certain implementation costs that may have been previously expensed as incurred. There was no impact on the Company's consolidated financial statements on the date of implementation. In October 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities ("VIE"). The amendments in this ASU for determining whether a decision-making fee is a variable interest require reporting entities to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety (as currently required by GAAP). These amendments will create alignment between determining whether a decision-making fee is a variable interest and determining whether a reporting entity within a related party group is the primary beneficiary of a VIE. The standard is effective for annual periods, including interim periods within those annual periods, beginning after December 15, 2019 for public companies. Early adoption is permitted. The Company adopted this guidance in January 1, 2020. There was no impact on the Company's consolidated financial statements. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606. This ASU provides guidance on whether certain transactions between collaborative arrangement participants should be accounted for with revenue under Topic 606, specifically when the collaborative arrangement participant is a customer in the context of a unit-of-account. It provides more comparability in the presentation of revenues for certain transactions between collaborative arrangement participants, including adding unit-of-account guidance in Topic 808 to align with the guidance in Topic 606 (that is, a distinct good or service) when an entity is assessing whether the collaborative arrangement or a part of the arrangement is within the scope of Topic 606. The standard is effective for annual periods, including interim periods within those annual periods, beginning after December 15, 2019 for public companies. Early adoption is permitted. The Company adopted this guidance in January 1, 2020. There was no impact on the Company's consolidated financial statements. Recently Issued Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, Financial Instruments (Topic 326) - Credit Losses: Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement of credit losses on financial instruments. The new guidance replaces the incurred loss impairment methodology in the current guidance with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates. This ASU will be effective for the Company commencing January 1, 2022. The Company is in the process of assessing the impact of this ASU on our consolidated financial statements and disclosures.

Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 27	$ 114
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Useful life of finite-lived intangible assets	10 years

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2020
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event Effective April 1, 2020, the Company amended its Secured Credit Facility credit agreements with Société Générale that increased the credit commitment with the lender under the Domestic Revolving Credit Facility by $3,500 from $25,000 to $28,500 and simultaneously decreased the credit commitment with the lender under the International Revolving Credit Facility by €3,179 (approximately $3,500 at closing) from €9,156 ($10,093) to €5,977 ($6,593).

Notes Payable and Long-Term Debt - Term Loan Facilities and Revolving Credit Facilities (Details) € in Thousands	3 Months Ended
	Mar. 31, 2020 EUR (€)	Apr. 01, 2020 EUR (€)	Apr. 01, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 01, 2019	Nov. 30, 2019	May 05, 2017 USD ($)
Secured Term Loan
Debt Instrument [Line Items]
Aggregate principal amount								$ 30,000,000
Secured Credit Facilities
Debt Instrument [Line Items]
Debt covenant leverage ratio limit	3.00
Increase in applicable interest rate upon default	2.00%
Revolving credit facility \| Other Assets
Debt Instrument [Line Items]
Unamortized debt issuance costs				$ 1,175,000	$ 1,317,000
Revolving credit facility \| Revolving Credit Facility Prior To Amendment
Debt Instrument [Line Items]
Maximum borrowing capacity \| €	€ 9,156
U.S. Revolver \| Revolving credit facility
Debt Instrument [Line Items]
Aggregate principal amount				25,000,000
Unused facility commitment fees percentage	0.50%
U.S. Revolver \| Letters of credit
Debt Instrument [Line Items]
Amounts outstanding				5,100,000	6,548,000
Available borrowing capacity				1,500,000	9,052,000
International Revolver \| Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity				10,093,000				$ 10,000,000
Unused facility commitment fees percentage	0.75%
International Revolver \| Revolving credit facility \| Foreign credit agreements
Debt Instrument [Line Items]
Available borrowing capacity				1,134,000	2,538,000
International Revolver \| Revolving credit facility \| Other Foreign Banks \| Foreign credit agreements
Debt Instrument [Line Items]
Amounts outstanding				2,162,000	3,145,000
Available borrowing capacity				165,000	2,232,000
Maximum borrowing capacity				5,138,000	7,679,000
Unsecured Debt \| Hill International, Inc. - First Abu Dhabi Bank (FAB) PJSC Overdraft Credit Facility
Debt Instrument [Line Items]
Available borrowing capacity				1,134,000	$ 2,538,000
Unsecured Debt \| Hill International Brasil S.A. - Revolving Credit Facility
Debt Instrument [Line Items]
Available borrowing capacity				$ 0
Fixed interest rate	2.80%			2.80%	3.24%	2.80%	3.30%
Subsequent Event \| Revolving credit facility \| Revolving Credit Facility Prior To Amendment
Debt Instrument [Line Items]
Maximum borrowing capacity \| €		€ 5,977
Subsequent Event \| U.S. Revolver \| Revolving credit facility
Debt Instrument [Line Items]
Aggregate principal amount			$ 28,500,000
Subsequent Event \| International Revolver \| Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 6,593,000

Segment and Related Information - Operating Profit (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	$ (3,865)	$ 539
Operating segment \| United States
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	7,388	5,742
Operating segment \| Latin America
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	(243)	277
Operating segment \| Europe
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	1,697	882
Operating segment \| Middle East
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	1,098	5,119
Operating segment \| Africa
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	863	1,610
Operating segment \| Asia/Pacific
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating profit (loss)	183	(478)
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Foreign exchange expense	4,051	(26)
Operating profit (loss)	$ (14,851)	$ (12,613)

Segment and Related Information - Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Depreciation and Amortization Expense
Depreciation and amortization expense	$ 2,424	$ 791
Operating segment \| Project Management
Depreciation and Amortization Expense
Depreciation and amortization expense	364	774
Corporate
Depreciation and Amortization Expense
Depreciation and amortization expense	2,060	$ 17
Leasehold Improvements \| Corporate
Depreciation and Amortization Expense
Depreciation and amortization expense	$ 1,582

Goodwill (Details) - USD ($)		3 Months Ended
Goodwill (Details) - USD ($)	Jul. 01, 2019	Mar. 31, 2020
Goodwill [Roll Forward]
Balance, December 31, 2019		$ 48,024,000
Translation adjustments		(3,433,000)
Balance, March 31, 2020		$ 44,591,000
Goodwill impairment	$ 0

Subsequent Events (Details) € in Thousands	Apr. 01, 2020 EUR (€)	Apr. 01, 2020 USD ($)	Apr. 01, 2020 USD ($)	Mar. 31, 2020 EUR (€)	Mar. 31, 2020 USD ($)	May 05, 2017 USD ($)
Revolving credit facility \| Revolving Credit Facility Prior To Amendment
Subsequent Events [Line Items]
Maximum borrowing capacity \| €				€ 9,156
Revolving credit facility \| Revolving Credit Facility Prior To Amendment \| Subsequent Event
Subsequent Events [Line Items]
Increase (decrease) in maximum borrowing capacity	€ (3,179)	$ (3,500,000)
Maximum borrowing capacity \| €	€ 5,977
International Revolver \| Revolving credit facility
Subsequent Events [Line Items]
Maximum borrowing capacity					$ 10,093,000	$ 10,000,000
International Revolver \| Revolving credit facility \| Subsequent Event
Subsequent Events [Line Items]
Maximum borrowing capacity			$ 6,593,000
U.S. Revolver \| Revolving credit facility
Subsequent Events [Line Items]
Aggregate principal amount					$ 25,000,000
U.S. Revolver \| Revolving credit facility \| Subsequent Event
Subsequent Events [Line Items]
Increase in aggregate principal amount		$ 3,500,000
Aggregate principal amount			$ 28,500,000

Share-Based Compensation	3 Months Ended
Share-Based Compensation	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation The Company recognized total share-based compensation expense in selling, general and administrative expenses in the consolidated statement of operations of $399 and $241 for the three months ended March 31, 2020 and 2019. The Company's related share-based compensation is comprised of the following: Restricted Stock Units During the three months ended March 31, 2020 and 2019, the Company granted certain employees and executive officers equity awards in the form of restricted stock units ("RSU") that are subject to a combination of time and performance-based conditions under the 2017 Equity Compensation Plan (the "2017 Plan"), totaling 723 and 758 RSUs, respectively. Each RSU entitles the grantee to one unit of the Company's common stock. The time-based RSUs vest annually over a three-year period on the anniversary date of each grant. Unvested time-based RSUs will be forfeited if the grantee separates from the Company prior to its vesting date. During the three months ended March 31, 2020 and 2019, the related compensation expense was recorded based on a weighted average price per share of $3.28 and $3.23, respectively. The number of common shares to be issued under the performance-based RSUs will be determined based on three levels of performance metrics based on the Company's earnings and will be assessed on an annual basis for the years ended December 31, 2020, 2021 and 2022 for the RSUs granted during the three months ended March 31, 2020 and for the years ended December 31, 2019, 2020 and 2021 for the RSUs granted during three months ended March 31, 2019. If the Company meets the performance metrics for any one of the measurement periods, such units will vest on the next anniversary date of the grant date. All vested RSUs will be settled on the third anniversary of the grant date. Unvested RSUs are subject to forfeiture if the grantee separates from the Company prior to its vesting date. During the three months ended March 31, 2020 and 2019, the Company determined it was not probable that the target performance metric would be met for each of the RSU grants and, therefore, did not record any share-based compensation expense related to such RSUs. Deferred Stock Units Deferred Stock Units ("DSU") issued under the 2017 Plan entitle participants to receive one share of the Company's common stock for each DSU and they will vest immediately upon separation from the Company. The compensation expense related to these units was determined based on the stock price of the Company's common stock on the grant date of the DSUs. During the three months ended March 31, 2020 and 2019, 8 DSUs were granted during both periods. These DSU grants were issued to the Company's board of directors (the "Board") in lieu of their cash portion of their annual retainer, at their election. For the three months ended March 31, 2020 and 2019, the related compensation expense is recorded based on a weighted average price per share of $3.18 and $3.15, respectively. Stock Options At March 31, 2020 and 2019, the Company had approximately 1,616 and 1,417 stock options outstanding, respectively, with a weighted average exercise price of $4.03 and $4.33, respectively. During the three months ended March 31, 2020 and 2019, options lapsed for approximately 263 and 525 shares, respectively, with a weighted average exercise price of $3.67 and $4.42, respectively.

Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Components of accounts payable and accrued expenses
Accounts payable	$ 25,659	$ 22,102
Accrued payroll and related expenses	27,546	28,874
Accrued subcontractor fees	8,966	9,405
Accrued agency fees	193	239
Accrued legal and professional fees	1,787	2,169
Other accrued expenses	2,243	2,383
Accounts payable and accrued expenses, net	$ 66,394	$ 65,172

Accounts Receivable

3 Months Ended

Mar. 31, 2020

Receivables [Abstract]

Accounts Receivable

The components of accounts receivable and accounts receivable - affiliates reflected in the Company's consolidated balance sheets are as follows:



Accounts Receivable	March 31, 2020			December 31, 2019
Billed ⁽¹⁾	$	128,320		$	132,339
Unbilled ⁽²⁾	35,122			30,026
	163,442			162,365
Allowance for doubtful accounts ⁽¹⁾	(55,333		)	(58,473		)
Accounts receivable, net	$	108,109		$	103,892

Accounts Receivable - Affiliates
Billed ⁽³⁾	$	13,895		$	12,546
Unbilled ⁽²⁾	11,658			6,888
	$	25,553		$	19,434
Allowance for doubtful accounts	(634		)	(658		)
Accounts receivable - affiliates, net	$	24,919		$	18,776

(1) Includes $32,162 and $32,864 related to amounts due from a client in Africa as of March 31, 2020 and December 31, 2019, respectively.

(2) Amount is net of unbilled reserves.

(3) Includes $401 and $397 of retainage receivables due from affiliates as of March 31, 2020 and December 31, 2019, respectively.

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings From time to time, the Company is a defendant or plaintiff in various legal proceedings which arise in the normal course of business. As such the Company is required to assess the likelihood of any adverse outcomes to these proceedings as well as potential ranges of probable losses. A determination of the amount of the provision required for commitments and contingencies, if any, which would be charged to earnings, is made after careful analysis of each proceeding. The provision may change in the future due to new developments or changes in circumstances. Changes in the provision could increase or decrease the Company’s earnings in the period the changes are made. It is the opinion of management, after consultation with legal counsel, that the ultimate resolution of these proceedings will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows. Knowles Limited (“Knowles”), a subsidiary of the Company, is a party to an arbitration proceeding instituted on July 8, 2014 in which Knowles claimed that it was entitled to payment for services rendered to Celtic Bioenergy Limited (“Celtic”). The arbitrator decided in favor of Knowles. The arbitrator’s award was appealed by Celtic to the U.K. High Court of Justice, Queen’s Bench Division, Technology and Construction Court (“Court”). On March 16, 2017, the Court (1) determined that certain relevant facts had been deliberately withheld from the arbitrator by an employee of Knowles and (2) remitted the challenged parts of the arbitrator’s award back to the arbitrator to consider the award in possession of the full facts. In May 2019, Celtic issued a claim against Knowles for negligent application and a hearing was held in December 2019. The Company is awaiting a final determination. Loss on Performance Bond On February 8, 2018, the Company received notice from the First Abu Dhabi Bank ("FAB", formerly known as the National Bank of Abu Dhabi) that Public Authority of Housing Welfare of Kuwait submitted a claim for payment on a Performance Guarantee issued by the Company for approximately $7,938 for a project located in Kuwait. FAB subsequently issued, on behalf of the Company, a payment on February 15, 2018. The Company is taking legal action to recover the full Performance Guarantee amount. On September 20, 2018 the Kuwait First Instance Court dismissed the Company's case. As a result, the Company fully reserved the performance guarantee payment above in the first quarter of 2018 and it is presented as "Loss on Performance Bond" on the consolidated statements of operations. The Company filed an appeal before the Kuwait Court of Appeals seeking referral of the matter to a panel of experts for determination. On April 21, 2019, the Court of Appeals ruled to refer the matter to the Kuwait Experts Department. Hearings with the Kuwait Experts Department were held during July and September 2019. A final report was issued by the panel of experts in October 2019 for the held hearings on January 7, 2020 and February 4, 2020 and reserved the case for judgment to be issued on April 21, 2020. Due to the COVID-19 pandemic, all courts in Kuwait are closed until May 31, 2020. The Kuwait Court of Appeals will determine a new date for the judgment to be issued after the courts reopen. Other The Company has identified a potential tax liability related to certain foreign subsidiaries’ failure to comply with laws and regulations of the jurisdictions, outside of their home country, in which their employees provided services. The Company has estimated the potential liability to be approximately $1,196, which is included in other liabilities in the consolidated balance sheet at March 31, 2020.

Intangible Assets

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

The following table summarizes the Company’s acquired intangible assets:



	March 31, 2020				December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization

Client relationships	$	1,080	$	875	$	1,080	$	848
Total	$	1,080	$	875	$	1,080	$	848

Intangible assets, net	$	205			$	232

The Company amortizes client relationship intangible assets over the estimated useful life of ten years. For the three months ended March 31, 2020 and 2019, such amortization expense was $27 and $114, respectively.

The following table presents the estimated amortization expense for the next five years:



	Estimated Amortization Expense

Year ending December 31,
2020 (remaining 9 months)	$	52
2021	51
2022	51
2023	51
2024	—

Segment and Related Information - Revenue by Geographic Region (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)
Consulting Fee Revenue and Total Revenue by Geographic Region:
Number of reporting units \| segment	1
Total revenue	$ 93,308	$ 98,683
Percent of Total Revenue	100.00%	100.00%
United States
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 46,020	$ 48,102
Percent of Total Revenue	49.30%	48.70%
Latin America
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 1,171	$ 2,434
Percent of Total Revenue	1.30%	2.50%
Europe
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 11,537	$ 11,334
Percent of Total Revenue	12.40%	11.50%
Middle East
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 24,572	$ 28,311
Percent of Total Revenue	26.30%	28.70%
Africa
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 7,297	$ 6,949
Percent of Total Revenue	7.80%	7.00%
Asia/Pacific
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 2,711	$ 1,553
Percent of Total Revenue	2.90%	1.60%
Geographic Concentration Risk
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	100.00%	100.00%
Geographic Concentration Risk \| United States
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	49.30%	48.70%
Geographic Concentration Risk \| Latin America
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	1.30%	2.50%
Geographic Concentration Risk \| Europe
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	12.40%	11.50%
Geographic Concentration Risk \| Middle East
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	26.30%	28.70%
Geographic Concentration Risk \| Africa
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	7.80%	7.00%
Geographic Concentration Risk \| Asia/Pacific
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	2.90%	1.60%
Consulting fee revenue
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 77,150	$ 79,000
Consulting fee revenue \| United States
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	34,044	32,595
Consulting fee revenue \| Latin America
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	1,171	2,429
Consulting fee revenue \| Europe
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	10,581	10,902
Consulting fee revenue \| Middle East
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	23,413	25,260
Consulting fee revenue \| Africa
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	6,602	6,411
Consulting fee revenue \| Asia/Pacific
Consulting Fee Revenue and Total Revenue by Geographic Region:
Total revenue	$ 1,339	$ 1,403
Consulting fee revenue \| Geographic Concentration Risk
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	100.00%	100.00%
Consulting fee revenue \| Geographic Concentration Risk \| United States
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	44.20%	41.20%
Consulting fee revenue \| Geographic Concentration Risk \| Latin America
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	1.50%	3.10%
Consulting fee revenue \| Geographic Concentration Risk \| Europe
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	13.70%	13.80%
Consulting fee revenue \| Geographic Concentration Risk \| Middle East
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	30.30%	32.00%
Consulting fee revenue \| Geographic Concentration Risk \| Africa
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	8.60%	8.10%
Consulting fee revenue \| Geographic Concentration Risk \| Asia/Pacific
Consulting Fee Revenue and Total Revenue by Geographic Region:
Percent of Total Revenue	1.70%	1.80%

Basis of Presentation - Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss	$ (6,422)	$ (2,068)
Less: net earnings - non-controlling interests	159	67
Net loss attributable to Hill International, Inc.	$ (6,581)	$ (2,135)
Basic weighted average common shares outstanding	56,543	55,946
Effect of dilutive securities:
Diluted weighted average common shares outstanding (in shares)	56,543	55,946
Basic loss per common share - Hill International, Inc. (in dollars per share)	$ (0.12)	$ (0.04)
Diluted loss per common share - Hill International, Inc. (in dollars per share)	$ (0.12)	$ (0.04)
Stock options
Effect of dilutive securities:
Dilutive securities	0	0
Unvested share-based compensation units
Effect of dilutive securities:
Dilutive securities	0	0

Liquidity (Details) - USD ($) $ in Thousands	3 Months Ended
Liquidity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Liquidity [Line Items]
Cash and cash equivalents	$ 16,083	$ 15,915
Approximate cost reduction	10,000
U.S. Revolver \| Letters of credit
Liquidity [Line Items]
Available borrowing capacity	1,500	9,052
Long-term Line of Credit	5,100	6,548
Foreign credit agreements \| International Revolver \| Revolving credit facility
Liquidity [Line Items]
Available borrowing capacity	1,134	2,538
Foreign credit agreements \| Other Foreign Banks \| International Revolver \| Revolving credit facility
Liquidity [Line Items]
Available borrowing capacity	165	2,232
Long-term Line of Credit	$ 2,162	$ 3,145

Revenue from Contracts with Clients - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 93,308	$ 98,683
Percent of Total Revenue	100.00%	100.00%
United States
Disaggregation of Revenue [Line Items]
Revenue	$ 46,020	$ 48,102
Percent of Total Revenue	49.30%	48.70%
Latin America
Disaggregation of Revenue [Line Items]
Revenue	$ 1,171	$ 2,434
Percent of Total Revenue	1.30%	2.50%
Europe
Disaggregation of Revenue [Line Items]
Revenue	$ 11,537	$ 11,334
Percent of Total Revenue	12.40%	11.50%
Middle East
Disaggregation of Revenue [Line Items]
Revenue	$ 24,572	$ 28,311
Percent of Total Revenue	26.30%	28.70%
Africa
Disaggregation of Revenue [Line Items]
Revenue	$ 7,297	$ 6,949
Percent of Total Revenue	7.80%	7.00%
Asia/Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 2,711	$ 1,553
Percent of Total Revenue	2.90%	1.60%
Fixed Price
Disaggregation of Revenue [Line Items]
Revenue	$ 17,712	$ 23,736
Fixed Price \| United States
Disaggregation of Revenue [Line Items]
Revenue	5,023	3,433
Fixed Price \| Latin America
Disaggregation of Revenue [Line Items]
Revenue	1,171	2,016
Fixed Price \| Europe
Disaggregation of Revenue [Line Items]
Revenue	6,429	6,051
Fixed Price \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	4,883	11,365
Fixed Price \| Africa
Disaggregation of Revenue [Line Items]
Revenue	206	571
Fixed Price \| Asia/Pacific
Disaggregation of Revenue [Line Items]
Revenue	0	300
T&M
Disaggregation of Revenue [Line Items]
Revenue	75,596	74,947
T&M \| United States
Disaggregation of Revenue [Line Items]
Revenue	40,997	44,669
T&M \| Latin America
Disaggregation of Revenue [Line Items]
Revenue	0	418
T&M \| Europe
Disaggregation of Revenue [Line Items]
Revenue	5,108	5,283
T&M \| Middle East
Disaggregation of Revenue [Line Items]
Revenue	19,689	16,946
T&M \| Africa
Disaggregation of Revenue [Line Items]
Revenue	7,091	6,378
T&M \| Asia/Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 2,711	$ 1,253

COVER PAGE - shares	3 Months Ended
COVER PAGE - shares	Mar. 31, 2020	Apr. 24, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-33961
Entity Registrant Name	HILL INTERNATIONAL, INC.
Entity Central Index Key	0001287808
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-0953973
Entity Address, Address Line One	One Commerce Square
Entity Address, Address Line Two	2005 Market Street, 17th Floor
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19103
City Area Code	215
Local Phone Number	309-7700
Title of 12(b) Security	Common Stock, par value $0.0001
Trading Symbol	HIL
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		55,984,012

Notes Payable and Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Summary of outstanding debt obligations

The table below reflects the Company's notes payable and long-term debt, which includes credit facilities:



			Interest Rate ⁽¹⁾		Balance Outstanding as of
Loan	Maturity	Interest Rate Type	March 31, 2020	December 31, 2019	March 31, 2020			December 31, 2019
Secured Credit Facilities
Hill International, Inc. - Société Générale 2017 Term Loan Facility	06/20/2023	Variable	7.86%	7.92%	$	29,175		$	29,250
Hill International, Inc. - Société Générale Domestic Revolving Credit Facility (2)	05/04/2022	Variable	6.18%	6.27%	18,400			9,400
Hill International N.V.. - Société Générale International Revolving Credit Facility (3)	05/04/2022	Variable	4.14%	4.16%	2,811			2,302
Unsecured Credit Facilities
Hill International, Inc. - First Abu Dhabi Bank ("FAB") PJSC Overdraft Credit Facility (4)	04/18/2021	Variable	5.79%	5.81%	1,997			593
Hill International Brasil S.A. - Revolving Credit Facility (5)	06/12/2020	Fixed	2.80%	3.24%	386			498
Unsecured Notes Payable and Long-Term Debt
Hill International Spain SA-Bankia S.A. & Bankinter S.A.(6)	12/31/2021	Fixed	2.21%	2.21%	907			1,054
Philadelphia Industrial Development Corporation Loan	03/31/2027	Fixed	2.79%	2.79%	466			486
Total notes payable and long-term debt, gross					$	54,142		$	43,583
Less: unamortized discount and deferred financing costs related to Société Générale 2017 Term Loan Facility					(601		)	(641		)
Notes payable and long-term debt					$	53,541		$	42,942
Current portion of notes payable					$	3,258		$	1,972
Current portion of unamortized debt discount and deferred financing costs					$	(187	)	$	(180	)
Current maturities of notes payable and long-term debt					$	3,071		$	1,792
Notes payable and long-term debt, net of current maturities					$	50,470		$	41,150

(1) Interest rates for variable interest rate debt are reflected on a weighted average basis through March 31, 2020 since the loan origination or modification date.

(2) As of March 31, 2020 and December 31, 2019, the Company had $5,100 and $6,548 of outstanding letters of credit, respectively, in addition to the balances outstanding above, which resulted in $1,500 and $9,052 of available borrowing capacity under the Domestic Revolving Credit Facility, respectively. The amounts available were based on the maximum borrowing capacity of $25,000 as of March 31, 2020 and December 31, 2019. See additional information below related to this secured revolving credit facility.

(3) As of March 31, 2020 and December 31, 2019, the Company had $2,162 and $3,145 of outstanding letters of credit, respectively, in addition to the balances outstanding above, which resulted in $165 and $2,232 of available borrowing capacity under the International Revolving Credit Facility, respectively. The amounts available were based on the Company's borrowing capacity of $5,138 and $7,679 as of March 31, 2020 and December 31, 2019, respectively. See additional information below related to this secured revolving credit facility.

(4) FAB credit facility lender was formerly known as National Bank of Abu Dhabi. There is no stated maturity date, however, the loan is subject to annual review in April of each year, or at any other time as determined by FAB. Therefore, the amount outstanding is reflected within the current maturities of notes payable and long-term debt. Balances outstanding are reflected in U.S. dollars based on the conversion rates from AED as of March 31, 2020 and December 31, 2019. The Company had $1,134 and $2,538 of availability under the credit facility as of March 31, 2020 and December 31, 2019, respectively.

(5) Unsecured revolving credit facility is subject to automatic renewals on a monthly basis. Effective with the November 2019 renewal of the unsecured revolving credit facility, the interest rate was reduced by the credit facility lender from 3.30% to 2.80%. The Company had no availability under the unsecured credit facility as of March 31, 2020 and December 31, 2019. The amounts outstanding are based on conversion rates from Brazilian Real as of March 31, 2020 and December 31, 2019.

(6) Balances outstanding are reflected in U.S. dollars based on the conversion rates from Euros as of March 31, 2020 and December 31, 2019.

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Segment and Related Information

3 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Segment and Related Information

The Company operates as one reporting segment which reflects how the Company is managed, which provides construction and project management services to construction owners worldwide. Such services include program management, project management, construction management, project management oversight, troubled project turnaround, staff augmentation, project labor agreement consulting, commissioning, estimating and cost management, labor compliance services (collectively, "integrated project management") and facilities management services.

The following tables present certain information for operations:

Total Revenue by Geographic Region:



	Three Months Ended March 31,
	2020				2019

United States	$	46,020	49.3	%	$	48,102	48.7	%
Latin America	1,171		1.3	%	2,434		2.5	%
Europe	11,537		12.4	%	11,334		11.5	%
Middle East	24,572		26.3	%	28,311		28.7	%
Africa	7,297		7.8	%	6,949		7.0	%
Asia/Pacific	2,711		2.9	%	1,553		1.6	%
Total	$	93,308	100.0	%	$	98,683	100.0	%

Consulting Fee Revenue by Geographic Region:



	Three Months Ended March 31,
	2020				2019

United States	$	34,044	44.2	%	$	32,595	41.2	%
Latin America	1,171		1.5	%	2,429		3.1	%
Europe	10,581		13.7	%	10,902		13.8	%
Middle East	23,413		30.3	%	25,260		32.0	%
Africa	6,602		8.6	%	6,411		8.1	%
Asia/Pacific	1,339		1.7	%	1,403		1.8	%
Total	$	77,150	100.0	%	$	79,000	100.0	%

For the three months ended March 31, 2020 and 2019, the United States and the United Arab Emirates were the only countries to account for 10% or more of total revenue.

Operating Profit (Loss) by Geographic Region:



	Three Months Ended March 31,
	2020			2019

United States ⁽¹⁾	$	7,388		$	5,742
Latin America	(243		)	277
Europe ⁽¹⁾	1,697			882
Middle East ⁽¹⁾	1,098			5,119
Africa	863			1,610
Asia/Pacific	183			(478		)
Corporate ⁽²⁾	(14,851		)	(12,613		)
Total	$	(3,865	)	$	539

(1) includes Hill's share of loss (profit) of equity method affiliates on the Consolidated Statements of Operations.

(2) includes foreign exchange expense (benefit) of $4,051 and $(26) for the three months ended March 31, 2020 and 2019, respectively.

Depreciation and Amortization Expense:



	Three Months Ended March 31,
	2020		2019

Project Management	$	364	$	774
Corporate ⁽¹⁾	2,060		17
Total	$	2,424	$	791

(1) includes $1,582 additional depreciation charge for the write-off of leasehold improvements related to the Company subletting office space in Philadelphia to a third party.

Total Revenue By Client Type:



	Three Months Ended March 31,
	2020				2019

U.S. federal government	$	4,610	4.9	%	$	4,692	4.8	%
U.S. state, regional and local governments	30,551		32.7	%	30,895		31.3	%
Foreign governments	25,364		27.2	%	25,679		26.0	%
Private sector	32,783		35.2	%	37,417		37.9	%
Total	$	93,308	100.0	%	$	98,683	100.0	%

Property, Plant and Equipment, Net, by Geographic Location:



	March 31, 2020		December 31, 2019

United States	$	8,188	$	9,701
Latin America	525		700
Europe	447		473
Middle East	809		803
Africa	131		139
Asia/Pacific	67		79
Total	$	10,167	$	11,895

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000