Hill International (HIL) 10-Q 12 Jul 18 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Jul. 06, 2018
Document and Entity Information
Entity Registrant Name	Hill International, Inc.
Entity Central Index Key	1,287,808
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		55,135,158
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 14,933	$ 25,637
Cash - restricted	4,534	4,312
Accounts receivable, less allowance for doubtful accounts of $67,952 and $71,082	155,562	164,844
Accounts receivable - affiliates	6,963	5,712
Prepaid expenses and other current assets	7,628	7,751
Income tax receivable	4,515	3,554
Current assets held for sale	0	54,651
Total current assets	194,135	266,461
Property and equipment, net	13,940	16,389
Cash - restricted, net of current portion	1,160	313
Retainage receivable	9,778	17,225
Acquired intangibles, net	4,556	6,006
Goodwill	53,041	50,665
Investments	4,469	3,501
Deferred income tax assets	3,573	3,200
Other assets	5,493	4,224
Non-current assets held for sale	0	32,091
Total assets	290,145	400,075
Liabilities and Stockholders’ Equity
Current maturities of notes payable and long-term debt	2,695	1,983
Accounts payable and accrued expenses	82,717	85,680
Income taxes payable	12,323	4,874
Current portion of deferred revenue	3,761	12,943
Other current liabilities	10,430	8,157
Current liabilities held for sale	0	25,888
Total current liabilities	111,926	139,525
Notes payable and long-term debt, net of current maturities	31,443	142,120
Retainage payable	641	961
Deferred income taxes	2,874	560
Deferred revenue	9,511	22,804
Other liabilities	14,710	12,666
Non-current liabilities held for sale	0	5,087
Total liabilities	171,105	323,723
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, 59,358 shares and 58,835 shares issued at September 30, 2017 and December 31, 2016, respectively	6	6
Additional paid-in capital	195,890	190,353
Accumulated deficit	(44,097)	(81,349)
Accumulated other comprehensive loss	(5,150)	(4,611)
Shareholders' equity before treasury stock and noncontrolling interests	146,649	104,399
Less treasury stock of 6,977 shares at September 30, 2017 and December 31, 2016, respectively	(30,041)	(30,041)
Hill International, Inc. share of equity	116,608	74,358
Noncontrolling interests	2,432	1,994
Total equity	119,040	76,352
Total liabilities and stockholders’ equity	$ 290,145	$ 400,075

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 67,952	$ 71,082
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	59,358,000	58,835,000
Treasury stock, shares	6,977,000	6,977,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Revenues	$ 123,192	$ 121,222	$ 364,748	$ 390,830
Direct expenses	85,875	82,329	251,191	267,984
Gross profit	37,317	38,893	113,557	122,846
Selling, general and administrative expenses	38,945	46,867	112,482	118,983
Share of loss (profit) of equity method affiliates	0	12	(48)	28
Operating profit (loss)	(1,628)	(7,986)	1,123	3,835
Interest and related financing fees, net	1,035	606	2,066	1,810
(Loss) Earnings before income taxes	(2,663)	(8,592)	(943)	2,025
Income tax (benefit) expense	(1,068)	2,318	(368)	5,523
Loss from continuing operations	(1,595)	(10,910)	(575)	(3,498)
Discontinued operations:
Loss from discontinued operations, net of tax	(752)	(540)	(12,304)	(2,357)
Gain (Loss) on disposal of discontinued operations, net of tax	(1,892)	0	50,303	0
Loss from discontinued operations, net of tax	(2,644)	(540)	37,999	(2,357)
Net (loss) earnings	(4,239)	(11,450)	37,424	(5,855)
Less: net earnings - noncontrolling interests	55	96	175	57
Net (loss) earnings attributable to Hill International, Inc.	$ (4,294)	$ (11,546)	$ 37,249	$ (5,912)
Basic earnings (loss) per common share from continuing operations (in dollars per share)	$ (0.03)	$ (0.21)	$ (0.01)	$ (0.07)
Basic loss per common share from discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.24)	(0.04)
Basic gain (loss) on disposal of discontinued operations, net of income tax (in dollars per share)	(0.04)	0	0.97	0
Basic (loss) earnings per common share - Hill International, Inc. (in dollars per share)	$ (0.08)	$ (0.22)	$ 0.72	$ (0.11)
Basic weighted average common shares outstanding (in shares)	52,371	51,753	52,065	51,704
Diluted earnings (loss) per common share from continuing operations (in dollars per share)	$ (0.03)	$ (0.21)	$ (0.01)	$ (0.07)
Diluted earnings (loss) per common share from discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.24)	(0.04)
Diluted gain (loss) on disposal of discontinued operations, net of income tax (in dollars per share)	(0.04)	0	0.97	0
Diluted (loss) earnings per common share - Hill International, Inc. (in dollars per share)	$ (0.08)	$ (0.22)	$ 0.72	$ (0.11)
Diluted weighted average common shares outstanding (in shares)	52,371	51,753	52,065	51,704

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) EARNINGS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ (4,239)	$ (11,450)	$ 37,424	$ (5,855)
Foreign currency translation adjustment, net of tax	1,929	(160)	(273)	418
Other, net	0	79	0	135
Comprehensive earnings (loss)	(2,310)	(11,531)	37,151	(5,302)
Less: Comprehensive loss attributable to non-controlling interests	454	1,914	438	394
Comprehensive earnings (loss) attributable to Hill International, Inc.	$ (2,764)	$ (13,445)	$ 36,713	$ (5,696)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net earnings (loss)	$ 37,424	$ (5,855)
Loss from discontinued operations	12,304	2,357
Gain on sale of discontinued operations, net of taxes (see note 2)	(50,303)	0
Earnings (loss) from continuing operations	(575)	(3,498)
Adjustments to reconcile net earnings to net cash provided by (used in):
Depreciation and amortization	5,011	5,689
Provision for bad debts	2,350	10,827
Amortization of deferred loan fees	789	1,334
Deferred tax provision (benefit)	706	(685)
Stock based compensation	2,671	1,680
Loss on sale of assets	184	0
Unrealized foreign exchange losses on intercompany balances	407	7,463
Changes in operating assets and liabilities:
Restricted cash	(1,051)	(190)
Accounts receivable	10,490	(3,468)
Accounts receivable - affiliate	(1,243)	(5,778)
Prepaid expenses and other current assets	562	(671)
Income taxes receivable	(566)	(762)
Retainage receivable	9,298	(14,498)
Other assets	(4,305)	6,944
Accounts payable and accrued expenses	(7,888)	(8,822)
Income taxes payable	516	(3,676)
Deferred revenue	(25,061)	7,030
Other current liabilities	2,131	1,604
Retainage payable	(326)	(1,059)
Other liabilities	843	1,435
Net cash (used in) provided by continuing operations	(5,057)	899
Net cash (used in) provided by discontinued operations	(10,217)	72
Net cash (used in) provided by operating activities	(15,274)	971
Cash flows from investing activities:
Purchases of business	(123)	0
Payments for purchase of property and equipment	(1,927)	(1,498)
Proceeds from sale of assets	60	0
Net cash used in investing activities of continuing operations	(1,990)	(1,498)
Net cash provided by (used in) investing activities of discontinued operations	129,247	(920)
Net cash provided by (used in) investing activities	127,257	(2,418)
Cash flows from financing activities:
Payments on term loans	(75)	(900)
Proceeds from term loans	30,000	0
Net (payments) borrowings on revolving loans	(28,885)	8,937
Pay-off and termination of term loan	(117,494)	0
Payments on Philadelphia Industrial Development Corporation loan	(42)	(41)
Deferred Acquisition price payments	0	(1,531)
Dividends paid to noncontrolling interest	(18)	(109)
Payments of financing fees	(4,038)	0
Proceeds from stock issued under employee stock purchase plan	138	74
Proceeds from exercise of stock options	1,838	219
Net cash (used in) provided by financing activities	(118,576)	6,649
Effect of exchange rate changes on cash	(4,111)	(8,072)
Net decrease in cash and cash equivalents	(10,704)	(2,870)
Cash and cash equivalents — beginning of period	25,637	24,089
Cash and cash equivalents — end of period	$ 14,933	$ 21,219

The Company

The Company	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	The Company Hill International, Inc. (“Hill” or the “Company”) is a professional services firm that provides program management, project management, construction management and other consulting services primarily to the buildings, transportation, environmental, energy and industrial markets worldwide. Hill’s clients include the U.S. federal government, U.S. state and local governments, foreign governments and the private sector. Restatement of Previously Issued Unaudited Consolidated Financial Statements On May 8, 2018, the Company filed its Annual Report on Form 10-K/A for the year ended December 31, 2016 , which amended the Company’s audited consolidated financial statements for each of the years ended December 31, 2016, 2015 and 2014 and the related notes thereto. This Form 10-Q amends the Company’s unaudited consolidated financial statements for the three and nine months ended September 30, 2016 and the related notes thereto, included on Form 10-Q filed on August 8, 2016 (“Prior Filing”). The Restatement reflects the correction of the following errors identified for the three and nine months ended September 30, 2016 subsequent to the Prior Filing and the impact of restating the three months ended March 31, 2017 on the nine months ended September 30, 2017 : A. In connection with the accounting for the May 2017 sale of its Construction Claims Group, the Company determined that it had not previously accounted for certain foreign currency gains/losses on intercompany balances and transactions in accordance with accounting principles generally accepted in the United States (“US GAAP”). The Company improperly accounted for the foreign currency effect of certain transactions as if they were long-term investments by including the foreign currency effect in accumulated other comprehensive income instead of properly recording the effect as operating expenses as required under Accounting Standard Codification (ASC) 830 “Foreign Currency Matters.” As a result of these corrections, selling, general and administrative (“SG&A”) expenses increased $710 for the three months ended September 30, 2016 ; and decreased $1,813 and increased $1,186 for the nine months ended September 30, 2017 and 2016 , respectively. B. The Company identified departures from US GAAP under ASC 605-35 “Construction-Type and Production-Type Contracts” in its historical accounting for revenue recognition on nine long-term customer contracts with fee constraints (e.g., fixed fee, lump sum, maximum contract value). The Company enters into agreements for construction management and consulting services with customers, and the guidance of ASC 605-35-15-3D states that contracts for construction consulting services, such as under agency contracts or construction management agreements, fall within the scope of the standard and should follow either Percentage of Completion or Completed Contract methods of accounting. Historically, the Company had not consistently applied the percentage of completion method of revenue recognition. The corrections to properly apply U.S. GAAP to the identified contracts resulted in a decrease of $4,655 to revenues for the three months ended September 30, 2016 ; and increase of $3,130 and decrease of $499 to revenues for the nine months ended September 30, 2017 and 2016 , respectively. C. The Company discovered that it had not properly performed the required impairment testing of amortizable intangible assets in accordance with US GAAP in that certain assets no longer in use were not identified and impaired. In addition, an improper useful life was used for some of the Company’s internally developed software assets resulting in an improper amount of amortization expense being recorded in previous periods. The net effect of correcting these errors resulted in a $28 increase in SG&A expense for the three months ended September 30, 2016 ; and increases of $29 and $83 in SG&A expense for the nine months ended September 30, 2017 and 2016 , respectively. D. The Company identified other transactions that had been recorded to incorrect accounts and/or in improper amounts. The net corrections of these transactions resulted in an increase of $5 and a decrease of $757 in revenues for the three and nine months ended September 30, 2016 , respectively, and a $5,421 increase in revenues for the nine months ended September 30, 2017 ; a $5,305 increase in direct expenses for the nine months ended September 30, 2017; a decrease of $798 and $3,306 in SG&A expenses for the three and nine months ended September 30, 2016 , respectively and an increase of $473 in SG&A expenses for the nine month ended September 30, 2017 ; a $415 and a $1,245 , increase in interest expenses for the three and nine months ended September 30, 2016 , respectively; a $261 and $1,829 increase in net loss from discontinued operations for the three and nine months ended September 30, 2016, respectively and a $1,057 decrease in net loss from discontinued operations for the nine months ended September 30, 2017 ; and a $15 and $45 decrease in earnings from noncontrolling interest for the three and nine months ended September 30, 2016 , respectively and a $58 increase in earnings from noncontrolling interest for the nine months ended September 30, 2017 . In conjunction with the sale of the construction claims group, interest expense of $676 and $3,075 for the three and nine months ended September 30, 2016 , respectively, and interest expense of $552 for the nine months ended September 30, 2017 was reclassified from continuing operations to discontinued operations. E. Some of the corrections noted above impacted earnings (loss) before taxes which, in turn, required a calculation of the tax impact. The net impact was a decrease in income tax expense of $571 and $263 for the three and nine months ended September 30, 2016 , respectively and an increase in income tax expense of $695 for the nine months ended September 30, 2017 . HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF OPERATIONS Three Months Ended September 30, 2016 (in thousands, except per share data) As Previously Reported Adjustment As Restated Reference Revenues $ 125,872 $ (4,650 ) $ 121,222 B, D Direct expenses 82,329 — 82,329 Gross profit 43,543 (4,650 ) 38,893 Selling, general and administrative expenses 46,927 (60 ) 46,867 A, C, D Share of loss of equity method affiliates 12 — 12 Operating loss (3,396 ) (4,590 ) (7,986 ) Interest and related financing fees, net 191 415 606 D Loss before income taxes (3,587 ) (5,005 ) (8,592 ) Income tax expense 2,889 (571 ) 2,318 E Loss from continuing operations (6,476 ) (4,434 ) (10,910 ) Loss from discontinued operations (279 ) (261 ) (540 ) D Net loss (6,755 ) (4,695 ) (11,450 ) Less: net earnings - noncontrolling interests 111 (15 ) 96 D Net loss attributable to Hill International, Inc. $ (6,866 ) $ (4,680 ) $ (11,546 ) Basic loss per common share from continuing operations $ (0.13 ) $ (0.08 ) $ (0.21 ) Basic loss per common share from discontinued operations — (0.01 ) (0.01 ) Basic loss per common share - Hill International, Inc. $ (0.13 ) $ (0.09 ) $ (0.22 ) Basic weighted average common shares outstanding 51,753 — 51,753 Diluted loss per common share from continuing operations $ (0.13 ) $ (0.08 ) $ (0.21 ) Diluted loss per common share from discontinued operations — (0.01 ) (0.01 ) Diluted loss per common share - Hill International, Inc. $ (0.13 ) $ (0.09 ) $ (0.22 ) Diluted weighted average common shares outstanding 51,753 — 51,753 HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF OPERATIONS Nine Months Ended September 30, 2016 (in thousands, except per share data) As Previously Reported Adjustment As Restated Reference Revenues $ 392,087 $ (1,257 ) $ 390,830 B, D Direct expenses 267,984 — 267,984 Gross profit 124,103 (1,257 ) 122,846 Selling, general and administrative expenses 121,020 (2,037 ) 118,983 A, C, D Share of loss of equity method affiliates 28 — 28 Operating profit 3,055 780 3,835 Interest and related financing fees, net 565 1,245 1,810 D Earnings before income taxes 2,490 (465 ) 2,025 Income tax expense 5,786 (263 ) 5,523 E Loss from continuing operations (3,296 ) (202 ) (3,498 ) Loss from discontinued operations (528 ) (1,829 ) (2,357 ) D Net loss (3,824 ) (2,031 ) (5,855 ) Less: net earnings - noncontrolling interests 102 (45 ) 57 D Net loss attributable to Hill International, Inc. (3,926 ) (1,986 ) (5,912 ) Basic loss per common share from continuing operations $ (0.07 ) $ — $ (0.07 ) Basic loss per common share from discontinued operations (0.01 ) (0.03 ) (0.04 ) Basic loss per common share - Hill International, Inc. $ (0.08 ) $ (0.03 ) $ (0.11 ) Basic weighted average common shares outstanding 51,704 — 51,704 Diluted loss per common share from continuing operations $ (0.07 ) $ — $ (0.07 ) Diluted loss per common share from discontinued operations (0.01 ) (0.03 ) (0.04 ) Diluted loss per common share - Hill International, Inc. $ (0.08 ) $ (0.03 ) $ (0.11 ) Diluted weighted average common shares outstanding 51,704 — 51,704 HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Three Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Reference Net loss $ (6,755 ) $ (4,695 ) $ (11,450 ) A, B, C, D, E Foreign currency translation adjustment, net (1,638 ) 1,478 (160 ) A, B, C, D Other, net 79 — 79 Comprehensive loss $ (8,314 ) $ (3,217 ) $ (11,531 ) Comprehensive earnings attributable to noncontrolling interest 132 1,782 1,914 Comprehensive loss attributable to Hill International Inc. $ (8,446 ) (4,999 ) $ (13,445 ) HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Nine Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Reference Net earnings $ (3,824 ) $ (2,031 ) $ (5,855 ) A, B, C, D, E Foreign currency translation adjustment, net (1,257 ) 1,675 418 A, B, C, D Other, net 135 — 135 Comprehensive loss $ (4,946 ) $ (356 ) (5,302 ) Comprehensive (loss) earnings attributable to noncontrolling interest (1,223 ) 1,617 394 Comprehensive loss attributable to Hill International Inc. $ (3,723 ) $ (1,973 ) $ (5,696 ) In addition to the items noted above as part of the Restatement, the Company identified departures from US GAAP in its historical preparation and presentation of its statement of cash flows. The Company did not report its cash flows in the reporting currency equivalent of foreign currency using the exchange rates in effect at the time of the cash flows, or an appropriate average rate to approximate the rates in effect at the time of the cash flows. The impact of properly preparing a cash flow statement in each functional currency, translating the cash flow statement using the appropriate rate in effect at the time of a transaction, or substantially equivalent average rate for the period, and consolidation of the individual functional currency cash flows, as prescribed by the guidance in ASC 230, is depicted in the table below. The adjustments noted in the cash flow statements that follow are both a result of items “A” through “E” explained above, as well as the foreign currency effect from cash flow statements prepared in functional currency and appropriately translated. HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF CASH FLOW Nine Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Cash flows from operating activities: Net loss $ (3,824 ) $ (2,031 ) $ (5,855 ) Loss from discontinued operations — 2,357 2,357 Loss from continuing operations (3,824 ) 326 (3,498 ) Adjustments to reconcile net loss to net cash provided by (used in): Depreciation and amortization 7,705 (2,016 ) 5,689 Provision for bad debts 11,879 (1,052 ) 10,827 Amortization of deferred loan fees 1,334 — 1,334 Deferred tax benefit 663 (1,348 ) (685 ) Stock based compensation 1,838 (158 ) 1,680 Unrealized foreign exchange losses (gains) on intercompany balances — 7,463 7,463 Changes in operating assets and liabilities: Restricted cash (69 ) (121 ) (190 ) Accounts receivable 2,652 (6,120 ) (3,468 ) Accounts receivable - affiliate (5,665 ) (113 ) (5,778 ) Prepaid expenses and other current assets (1,001 ) 330 (671 ) Income taxes receivable (756 ) (6 ) (762 ) Retainage receivable (14,583 ) 85 (14,498 ) Other assets 5,191 1,753 6,944 Accounts payable and accrued expenses (8,582 ) (240 ) (8,822 ) Income taxes payable (3,951 ) 275 (3,676 ) Deferred revenue 124 6,906 7,030 Other current liabilities 2,639 (1,035 ) 1,604 Retainage payable (1,308 ) 249 (1,059 ) Other liabilities 385 1,050 1,435 Net cash (used in) provided by continuing operations (5,329 ) 6,228 899 Net cash provided by discontinued operations — 72 72 Net cash (used in) provided by in operating activities (5,329 ) 6,300 971 Cash flows from investing activities: Payments for purchase of property and equipment (2,584 ) 1,086 (1,498 ) Net cash used in investing activities of continuing operations (2,584 ) 1,086 (1,498 ) Net cash used in investing activities of discontinued operations — (920 ) (920 ) Net cash used in investing activities (2,584 ) 166 (2,418 ) Cash flows from financing activities: Payments on term loans (900 ) — (900 ) Net borrowings on revolving loans 8,950 (13 ) 8,937 Payments on Philadelphia Industrial Development Corporation loan (41 ) — (41 ) Deferred acquisition price payments (1,531 ) — (1,531 ) Dividends paid to noncontrolling interest (111 ) 2 (109 ) Proceeds from stock issued under employee stock purchase plan 65 9 74 Proceeds from exercise of stock options 220 (1 ) 219 Net cash provided by financing activities 6,652 (3 ) 6,649 Effect of exchange rate changes on cash (1,609 ) (6,463 ) (8,072 ) Net decrease in cash and cash equivalents (2,870 ) — (2,870 ) Cash and cash equivalents — beginning of period 24,089 — 24,089 Cash and cash equivalents — end of period $ 21,219 $ — $ 21,219

Discontinued Operations and Sal

Discontinued Operations and Sale of Business Unit	9 Months Ended
	Sep. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations and Sale of Business Unit	Discontinued Operations and Sale of Business Unit On December 20, 2016, the Company and its subsidiary Hill International N.V. (“Hill N.V.” and, collectively with the Company, the “Sellers”) entered into a Stock Purchase Agreement (as amended on May 3, 2017, the “Agreement”) with Liberty Mergeco, Inc. (the “US Purchaser”) and Liberty Bidco UK Limited (the “UK Purchaser” and, collectively with the US Purchaser, the “Purchasers”) pursuant to which the Purchasers were to acquire the Construction Claims Group (the "Claims Group") by the US Purchaser’s acquisition of all of the stock of Hill International Consulting, Inc. from the Company and the UK Purchaser’s acquisition of all of the stock of Hill International Consulting B.V. from Hill N.V. for a total purchase price of $140,000 in cash reduced by assumed indebtedness and certain other items, as set forth in the Agreement. The Claims Group sale closed on May 5, 2017 with an effective date of April 30, 2017 for a total purchase price of $140,000 in cash less: (1) an estimated working capital adjustment at closing amounting to approximately $8,449 ; and (2) approximately $2,187 of assumed indebtedness. In addition, the Company was required to provide a $3,750 letter of credit into escrow in order to secure certain of the Company’s indemnification obligations for 12 months following closing. The funds provided by the sale of the Construction Claims Group and the cash received upon the draw down under the 2017 Term Loan Facility and the amended Revolving Credit Facilities (described below) were required to be used as follows: (a) $117,000 to pay off the 2014 Term Loan Facility; (b) approximately $8,793 to pay down the International Revolver; and (c) approximately $1,214 to pay accrued interest and certain bank fees. The remaining proceeds along with a portion of the proceeds from the 2017 Term Loan were used to pay down the $25,000 U.S. Revolver. The Company and the purchasers of the Construction Claims Group were unable to agree upon a final net working capital amount. After agreeing to a reduction in the proceeds of $3,203 and pursuant to the terms of the agreement, the Company participated in a dispute resolution process by which independent accounting experts determined in June 2018 that the final net working capital should be reduced by an additional $1,876 . The total reduction in the proceeds from the buyer of $5,079 was completed and finalized in June 2018 and was included in calculating the gain during the second quarter of 2017. The Company entered into a transition services agreement (the “TSA”) and certain other agreements with the Purchasers that govern the relationships between the Purchasers and the Company following the Claims Group sale. Pursuant to the TSA, the Company provides the Purchasers with certain specified services on a transitional basis for periods generally up to six months following the Claims Group sale, including support in areas such as facilities, finance, human resources, legal, marketing, technology and treasury. In addition, the Company granted the Purchasers a license to use certain office premises as specified in the TSA. The TSA also outlined the services that the Purchasers provide to the Company for a period of generally up to six months following the Claims Group sale, including support in areas such as finance, legal and treasury. The charges for the transition services and licensed premises generally allows the providing company to recover the incremental costs and expenses it actually incurs in connection with providing the services and premises apart from the provision of certain services that are to be provided at no cost for terms specified in the TSA. As of April 30, 2017, the assets and liabilities of the Claims Group were reflected as held for sale in the Company’s Consolidated Balance Sheets, and the operating results and cash flows of the Claims Group were reflected as discontinued operations in the Company’s Consolidated Statements of Operations, Consolidated Statements of Comprehensive Earnings, and Consolidated Statements of Cash Flows for all periods presented. The carrying amounts of assets and liabilities of the discontinued operations of the Claims Group that were classified as held for sale are as follows (in thousands): April 30, 2017 December 31, 2016 Accounts receivable, net 47,611 50,892 Prepaid expenses and other current assets 3,153 3,064 Income taxes receivable — 695 Total current assets classified as held for sale $ 50,764 $ 54,651 Property and equipment, net 5,786 4,617 Acquired intangibles, net 3,289 3,397 Goodwill 23,454 23,461 Investments 5 6 Other assets 2,860 610 Total non-current assets classified as held for sale $ 35,394 $ 32,091 Accounts payable and accrued expenses 15,960 21,539 Income taxes payable (17 ) 92 Deferred revenue — 1,562 Other current liabilities 15,867 2,695 Total current liabilities classified as held for sale $ 31,810 $ 25,888 Deferred income taxes — 385 Deferred revenue 92 1,012 Retained Earnings — 457 Other liabilities 1,257 3,233 Total non-current liabilities classified as held for sale $ 1,349 $ 5,087 Net Assets $ 52,999 55,767 The line items constituting earnings from discontinued operations consist of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 (1) 2016 2017 (1) 2016 (As restated) (As restated) Revenues $ — $ 42,203 $ 62,149 $ 127,909 Direct expenses — 18,872 31,339 58,919 Gross profit — 23,331 30,810 68,990 Selling, general and administrative expenses (2) 727 21,118 33,874 61,901 Operating (loss) profit (727 ) 2,213 (3,064 ) 7,089 Interest and related financing fees, net (3) — 2,762 8,858 8,293 Loss before income taxes (727 ) (549 ) (11,922 ) (1,204 ) Pretax gain on the disposal of discontinued operations (4) — — 61,443 — Earnings from discontinued operations before income taxes (727 ) (549 ) 49,521 (1,204 ) Income tax expense (benefit) (5) 1,917 (9 ) 11,522 1,153 Net gain (loss) from discontinued operations $ (2,644 ) $ (540 ) $ 37,999 $ (2,357 ) (1) Results of operations for the Claims Group are reflected through April 30, 2017, the effective closing date of the Claims Group sale. (2) No amortization or depreciation expense was recorded by the Company in 2017 as the Claims Group’s assets were held for sale as of December 31, 2016. (3) In connection with the sale of the Claims Group, the Company was required to pay off its existing term loan facility and amend and pay down its existing revolving credit facilities (See Note 9). Interest expense and debt issuance costs attributable to the Claims Group were charged to discontinued operations. (4) The pretax gain on the sale of the Construction Claims Group was calculated as follows (in thousands): Adjusted purchase price $129,364 Cash transferred to buyer 4,041 Net proceeds received from Purchaser $125,323 Less net assets held for sale 52,999 Less other adjustments 10,881 Pretax gain on disposal $ 61,443 (5) The effective tax rates on pretax income from discontinued operations were (263.7)% and 23.3% for the three and nine months ended September 30, 2017, respectively. The 2017 rate differs from the U.S. federal statutory rate of 35% primarily due to the taxability of the gain on the sale in the U.S and foreign jurisdictions. The “gain on disposal of discontinued operations, net of tax” decreased during the 3-months ended September 30, 2017 due to an increase in tax expense. The tax expense of $1,917 is offset by a tax benefit to continuing operations of $1,893 from the use of its additional loss for the 3-months ended September 30, 2017.

Liquidity

Liquidity	9 Months Ended
	Sep. 30, 2017
Liquidity [Abstract]
Liquidity	Liquidity At September 30, 2017 our principal sources of liquidity consisted of $14,933 of cash and cash equivalents, $16,847 of available borrowing capacity under the Domestic Revolving Credit Facility, $9,876 of available borrowing capacity under the International Revolving Credit Facility and $2,100 under other foreign credit agreements. Additional information regarding the Company's credit facilities is set forth in Note 9 - Notes Payable and Long-Term Debt. From July 1, 2018 to July 12, 2018 , the date of this filing, the Company was not in compliance with the requirements of its Revolving Credit Facilities, which required the filing of this Quarterly Report on Form 10-Q by June 30, 2018. Upon the filing of this Quarterly Report on Form 10-Q, the Company is compliant under such requirements. Prior waivers of non-compliance with certain covenants in the Revolving Credit Facilities require the Company to file the Form 10-K for the 2017 fiscal year by July 17, 2018 and the Form 10-Q for the first quarter of 2018 by July 30, 2018. If the Company does not file such reports in accordance with these deadlines, it may again be in noncompliance with the requirements of the Revolving Credit Facilities.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation The accompanying unaudited interim consolidated financial statements were prepared in accordance with the rules and regulations of the Securities and Exchange Commission 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/A (Amendment No. 2) for the year ended December 31, 2016. Accordingly, they do not include all of the information and footnotes required by US 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 US 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. New Accounting Pronouncements For information with respect to new accounting pronouncements and the impact of these pronouncements on our consolidated financial statements, see Note 5 to the consolidated financial statements in Item 8 of Form 10K/A (Amendment No. 2) for the year ended December 31, 2016 filed with the SEC on May 4, 2018. There have been no new pronouncements impacting our consolidated financial statements since that filing. See update below. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU supersedes the revenue recognition requirements in FASB ASC 605, Revenue Recognition, and most industry-specific topics. The new guidance identifies how and when entities should recognize revenue. The new rules establish a core principle requiring the recognition of revenue to depict the transfer of promised goods or services to customers in an amount reflecting the consideration to which the entity expects to be entitled in exchange for such goods or services. In connection with this new standard, the FASB has issued several amendments to ASU 2014-09 to provide additional clarification and implementation instructions relating to (i) principal versus agent considerations, (ii) identifying performance obligations and licensing, (iii) narrow-scope improvements and practical expedients and (iv) technical corrections and improvements. However, none of the amendments change the core principle of the guidance in ASU 2014-09. The new guidance in ASU 2014-09, as well as all amendments, is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. The new guidance permits two methods of adoption, full retrospective or modified retrospective, and the Company anticipates that it will use the modified retrospective method of adoption in which the cumulative effect of applying the ASU will be recognized at January 1, 2018, the date of initial application. Management has implemented a plan of adoption and is continuing to evaluate the impact that adoption of this guidance will have on the Company’s financial statements. The Company’s implementation plan includes the following: • Forming an ASU 2014-09 working group comprised of management representatives. • Analyzing the Company’s revenue streams. • Selecting representative contracts within each revenue stream for evaluation under ASU 2014-09. • Identifying the impact from the standard on current business processes. • Evaluating additional disclosure requirements and monitoring changes to the Company’s internal controls. Management has commenced its plan for adoption of ASU 2014-09 by reviewing various types of revenue contracts and disaggregated the revenue into two revenue streams: (i) fixed price and (ii) time and materials. Thus far, from its contract reviews, the Company does not anticipate a material impact to its results of operations as the pattern of revenue recognition and the measurement of variable consideration is expected to be consistent under the new standard. However, the Company’s initial assessment of the impact could change as the adoption plan progresses. The Company expects that there will be an impact to financial reporting due to the enhanced revenue disclosures and internal control over financial reporting due to the new disclosure requirements of ASC 606. The Company will adopt the requirements of the new standard effective January 1, 2018, in the Company's Form 10-Q for the three months ended March 31, 2018.

Accounts Receivable

Accounts Receivable	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Accounts Receivable	Accounts Receivable The components of accounts receivable are as follows (in thousands): September 30, 2017 December 31, 2016 Billed $ 190,881 $ 200,134 Retainage, current portion 10,950 10,824 Unbilled 21,683 24,968 223,514 235,926 Allowance for doubtful accounts (67,952 ) (71,082 ) Total $ 155,562 $ 164,844 Unbilled receivables primarily represent revenue earned on contracts, which the Company is contractually precluded from billing until predetermined future dates. There is approximately $9,778 included in non-current Retainage Receivable in the consolidated balance sheet at September 30, 2017 . Of that amount, approximately $9,497 relates to retention and approximately $281 relates to a Defect and Liability Period (“DLP”), on the MOTC in Oman. Fifty percent of the DLP will be released one year from the commencement and the balance will be released upon the issuance of final Completion Certificates. This period commences upon the issuance of a “Taking Over Certificate” (by MOTC) to contractors, continues for a period of up to 24 months , and ends with the issuance of a final certificate closing the project.

Intangible Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets The following table summarizes the Company’s acquired intangible assets (in thousands): September 30, 2017 December 31, 2016 Gross Accumulated Gross Accumulated Client relationships $ 17,534 $ 13,420 $ 16,699 $ 11,298 Acquired contract rights 2,043 2,007 2,058 1,912 Trade names 897 491 959 500 Total $ 20,474 $ 15,918 $ 19,716 $ 13,710 Intangible assets, net $ 4,556 $ 6,006 Amortization expense related to intangible assets was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 2017 2016 2017 2016 (As restated) (As restated) $ 493 $ 286 $ 1,556 $ 2,279 The following table presents the estimated amortization expense based on our present intangible assets for the next five years (in thousands): Estimated Amortization Expense Year ending December 31, 2017 (remaining 3 months) $ 485 2018 1,088 2019 990 2020 728 2021 338

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill The following table summarizes the changes in the Company’s carrying value of goodwill during 2017 (in thousands): Balance, December 31, 2016 $ 50,665 Translation adjustments 2,376 Balance, September 30, 2017 $ 53,041

Accounts Payable and Accrued Ex

Accounts Payable and Accrued Expenses	9 Months Ended
	Sep. 30, 2017
Payables and Accruals [Abstract]
Accounts Payable and Accrued Expenses	Accounts Payable and Accrued Expenses Below are the components of accounts payable and accrued expenses (in thousands): September 30, 2017 December 31, 2016 Accounts payable $ 29,002 $ 30,944 Accrued payroll and related expenses 34,006 32,618 Accrued subcontractor fees 11,112 9,188 Accrued agency fees 2,075 5,702 Accrued legal and professional fees 1,549 2,223 Other accrued expenses 4,973 5,005 $ 82,717 $ 85,680

Notes Payable and Long-Term Deb

Notes Payable and Long-Term Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Notes Payable and Long-Term Debt	Notes Payable and Long-Term Debt Outstanding debt obligations are as follows (in thousands): September 30, 2017 December 31, 2016 2014 Term Loan Facility, net of unamortized discount and deferred financing costs of $4,416 at December 31, 2016 $ — $ 112,884 2017 Term Loan Facility, net of unamortized discount and deferred financing costs of $926 at September 30, 2017 28,999 — Domestic Revolving Credit Facility — 16,500 International Revolving Credit Facility — 11,102 Borrowings under credit facilities with a consortium of banks in Spain 2,747 2,962 Borrowings under overdraft credit facilities with the National Bank of Abu Dhabi 1,779 — Borrowings from Philadelphia Industrial Development Corporation 613 655 34,138 144,103 Less current maturities, net of unamortized discount and deferred financing costs of $157 and $1,778 at September 30, 2017 and December 31, 2016, respectively. 2,695 1,983 Notes payable and long-term debt, net of current maturities $ 31,443 $ 142,120 In conjunction with the sale of its Claims Group on May 5, 2017 (See Note 2), the Company terminated and paid off the 2014 Term Loan Facility and amended and paid down its Domestic and International Revolving Credit Facilities with Société Générale (the “Agent”), and other U.S. Loan Parties (the “U.S. Lenders”). There was approximately $117,000 outstanding under the 2014 Term Loan, $25,000 outstanding on the Domestic Revolving Credit Facility and €8,300 ( $8,793 ) outstanding on the International Revolving Credit Facility prior to the debt extinguishment and modification. In the second quarter of 2017, the Company recorded a charge of approximately $4,024 for the write-off of unamortized debt issuance costs related to the extinguishment of the 2014 Term Loan Facility and approximately $325 for the write-off of unamortized debt issuance costs related to the modification and reduction of borrowing capacity of the Domestic Revolving Credit Facility. The write-off of unamortized debt issuance costs is included in the results from discontinued operations. The Company is party to a credit agreement with Société Générale (the “Agent”), and other U.S. Loan Parties (the “U.S. Lenders”) consisting of the $30,000 (the "2017 Term Loan Facility") and a $25,000 U.S. dollar-denominated revolving credit facility (the “Domestic Revolving Credit Facility”, together with the 2017 Term Loan Facility, the “U.S. Credit Facilities”) available to the Company and a credit agreement with the Agent (the “International Lender”) providing a €9,156 ( $10,000 at closing) revolving credit facility (the “International Revolving Credit Facility” and together with the Domestic Revolving Credit Facility, the “Revolving Credit Facilities” and, together with the U.S. Credit Facilities, the “Secured Credit Facilities”) which is available to Hill International N.V. The Domestic Revolving Credit Facility and the International Revolving Credit Facility include sub-limits for letters of credit amounting to $20,000 and €8,000 ( $9,130 at closing), respectively. The Secured Credit Facilities contain customary default provisions, representations and warranties, and affirmative and negative covenants, and require the Company to comply with certain financial and reporting covenants. The financial covenant is comprised of a maximum Consolidated Net Leverage Ratio of 3.00 to 1.00 for any fiscal quarter ending on or subsequent to March 31, 2017 for the trailing twelve months then-ended. The Consolidated Net Leverage Ratio is the ratio of (a) consolidated total debt (minus unrestricted cash and cash equivalents) to consolidated earnings before interest, taxes, depreciation, amortization, share-based compensation and other non-cash charges, including bad debt expense, certain one-time litigation and transaction related expenses, and restructuring charges for the trailing twelve months. In the event of a default, the U.S. Lender and the International Lender may increase the interest rates by 2.0% . From July 1, 2018 to July 12, 2018 , the date of this filing, the Company was not in compliance with the requirements of our Revolving Credit Facilities which required the filing of this Quarterly Report on Form 10-Q by June 30, 2018. Upon the filing of this Quarterly Report on Form 10-Q, the Company is compliant under such requirements. Prior waivers of non-compliance with certain covenants in the Revolving Credit Facilities require the Company to file the Form 10-K for the 2017 fiscal year by July 17, 2018 and the Form 10-Q for the first quarter of 2018 by July 30, 2018. If the Company does not file such reports in accordance with these deadlines, it may again be in noncompliance with the requirements of the Revolving Credit Facilities. The U.S. Credit Facilities are guaranteed by certain U.S. subsidiaries of the Company, and the International Revolver is guaranteed by the Company and certain of the Company’s U.S. and non-U.S. subsidiaries. 2017 Term Loan Facility The disclosures that follow below describe the debt obligations outstanding as of September 30, 2017 under the 2017 Term Loan Facility. On June 21, 2017, the Company entered into the 2017 Term Loan Facility with a term of 6 years, requiring repayment of 1.0% of the original principal amount annually for the first five years. Any amounts repaid on the 2017 Term Loan Facility will not be available to be re-borrowed. The 2017 Term Loan Facility was funded net of a 1.0% discount of $300 of the principal amount, which has been deferred. In addition, the Company incurred fees and expenses related to the 2017 Term Loan Facility of approximately $874 , which have been deferred. The original issue discount and debt issuance costs are being amortized on a straight-line basis, which approximates the effective interest method, to interest and related financing fees, net over the six years ending June 21, 2023, the loan maturity date. The unamortized original issue discount and debt issuance cost balance of approximately $926 is included as an offset against the notes payable and long-term debt balance in the Consolidated Balance Sheet at September 30, 2017 . The interest rate on the 2017 Term Loan Facility is, at the Company’s option, either: • the London Inter-Bank Offered Rate (“LIBOR”) for the relevant interest period plus 5.75% per annum, provided that such LIBOR shall not be lower than 1.00% per annum; or • the Base Rate (as described below) plus 4.75% per annum. The “Base Rate” is a per annum rate equal to the highest of (A) the prime rate, (B) the federal funds effective rate plus 0.50% , or (C) the LIBOR for an interest period of one month plus 1.00% per annum. Upon a default, the applicable rate of interest under the Secured Credit Facilities may increase by 2.00% . The LIBOR (including when determining the Base Rate) shall in no event be less than 1.00% per annum. At September 30, 2017 , the interest rate on the 2017 Term Loan Facility was 6.99% . The Company has the right to prepay the 2017 Term Loan Facility in full or in part at any time without premium or penalty (except customary breakage costs); provided, however that upon the occurrence of prepayments relating to certain repricing transactions within the first six months following closing, a 1.0% prepayment premium will be payable. The Company is required to make certain mandatory prepayments, without premium or penalty (except customary breakage costs; provided, however, that upon the occurrence of any repricing transaction in respect of certain mandatory prepayments within the first six months following closing, a 1.0% prepayment premium is payable), including (i) with net proceeds of any issuance or incurrence of indebtedness by the Company after the closing, (ii) with net proceeds from certain asset sales outside the ordinary course of business, and (iii) with 50% of the excess cash flow for each fiscal year of the Company commencing with the first full fiscal year ending after closing (which percentage would be reduced to 25% if the Consolidated Net Leverage Ratio is equal to or less than 2.00 to 1.00 ). The 2017 Term Loan Facility (along with interest thereon) is generally secured by a first-priority security interest in substantially all assets of the Company and certain of the Company’s U.S. subsidiaries other than accounts receivable and cash proceeds thereof, as to which the 2017 Term Loan Facility (and the interest thereon) is secured by a second-priority security interest. Revolving Credit Facilities Simultaneously with the closing of the sale of the Construction Claims Business, the Company amended its Domestic Revolving Credit Facility to reduce the amount available to the Company to $25,000 , amended its International Revolving Credit Facility to reduce the amount available to the Company to $10,000 , and drew approximately $25,191 in cash and approximately $9,193 in letters of credit against the amended Revolving Credit Facilities. Deferred fees incurred with establishing the Secured Credit Facilities amounting to approximately $325 were charged to discontinued operations during the quarter of the sale. The Domestic Revolving Credit Facility and the International Revolving Credit Facility each have a term of five years from the closing and provide for letter of credit sub-limits in amounts of $20,000 and €8,000 (approximately $9,452 at September 30, 2017 ), respectively. The maximum Consolidated Net Leverage Ratio will be increased from the prior credit facilities to 3.00 for all test dates and will not decline. The definition of Consolidated Net Leverage Ratio was amended to (i) remove the cap on the amount of permitted cash netting and (ii) permit netting of unrestricted cash and cash equivalents. The Company incurred fees totaling $1,739 which are deferred and will be amortized to interest expense over the five -year term of the facilities. The Revolving Credit Facilities require payment of interest only during the term and were substantially drawn as of the date of modification. Under the Revolving Credit Facilities, outstanding loans may be repaid in whole or in part at any time, without premium or penalty, subject to certain customary limitations, and will be available to be re-borrowed from time to time through expiration on May 5, 2022. The interest rate on borrowings under the Domestic Revolving Credit Facility are, at the Company’s option from time to time, either the LIBOR rate for the relevant interest period plus 3.75% per annum or the Base Rate plus 2.75% per annum. At September 30, 2017 , the interest rate was 7.00% . The interest rate on borrowings under the International Revolving Credit Facility will be the European Inter-Bank Offered Rate, or “EURIBOR,” for the relevant interest period (or at a substitute rate to be determined to the extent EURIBOR is not available) plus 4.50% per annum. Throughout the three months ended September 30, 2017 , we had no borrowings and, therefore, did not incur such interest expense. The Company has paid commitment fees calculated at 0.50% annually on the average daily unused portion of the Domestic Revolving Credit Facility, and the Subsidiary has paid commitment fees calculated at 0.75% annually on the average daily unused portion of the International Revolving Credit Facility. The ability to borrow under each of the Domestic Revolving Credit Facility and the International Revolving Credit Facility is subject to a “borrowing base.” The Domestic Revolving Credit Facility borrowing base is calculated using a formula based upon approximately 85% of receivables that meet or satisfy certain criteria (“Eligible Domestic Receivables”). The International Revolving Credit Facility borrowing base is calculated using a different formula based upon approximately 10% of international receivables that meet or satisfy certain criteria. The Company or the Subsidiary, as applicable, will be required to make mandatory prepayments under their respective Revolving Credit Facilities to the extent that the aggregate outstanding amount thereunder exceeds the then-applicable borrowing base, which payments will be made without penalty or premium. At September 30, 2017 , the domestic borrowing base was $25,000 and the international borrowing base was €9,156 (approximately $10,818 at September 30, 2017 ). Generally, the obligations of the Company under the Domestic Revolving Credit Facility are secured by a first-priority security interest in the Eligible Domestic Receivables, cash proceeds and bank accounts of the Company and certain of the Company’s U.S. subsidiaries, and a second-priority security interest in substantially all other assets of the Company and such subsidiaries. The obligations of the Subsidiary under the International Revolving Credit Facility are generally secured by a first-priority security interest in substantially all accounts receivable and cash proceeds thereof, certain bank accounts of the Subsidiary and certain of the Company’s non-U.S. subsidiaries, and a second-priority security interest in substantially all other assets of the Company and certain of the Company’s U.S. and non-U.S. subsidiaries. The Company incurred fees and expenses related to the Revolving Credit Facilities in excess of $3,000 which has been deferred. The deferred fees are being amortized on a straight-line basis, which approximates the effective interest method, to interest expense and related financing fees, net over a five -year period which ends on May 5, 2022. The unamortized debt issuance cost balances of $2,502 and $1,650 are included in other assets in the consolidated balance sheet at September 30, 2017 and December 31, 2016 , respectively. At September 30, 2017 the Company had $8,153 of outstanding letters of credit and $16,847 of available borrowing capacity under the Domestic Revolving Credit Facility. At September 30, 2017 , the Company had $942 of outstanding letters of credit and $9,876 of available borrowing capacity under the International Revolving Credit Facility. Other Debt Arrangements The Company’s subsidiary, Hill International (Spain) S.A. (“Hill Spain”), maintained a revolving credit facility with three banks in Spain which initially provided for total borrowing of up to €5,640 with interest at 6.50% on outstanding borrowings. The facility expired on December 17, 2016. Concurrent with the satisfaction of this facility Hill Spain entered into a new agreement with three new banks. The total new facility is for €2,770 (approximately $3,273 at September 30, 2017 ) which bears interest between 1.85% and 3.50% and is repaid in equal installments over varying expiration dates between 36 and 60 months . Hill Spain previously maintained an ICO (Official Credit Institute) loan with Bankia Bank in Spain, which expired on August 10, 2017 and was paid in full. The Company maintains a credit facility with the National Bank of Abu Dhabi which provides for total borrowings of up to AED 11,500 (approximately $3,130 at September 30, 2017 ) collateralized by certain overseas receivables. At September 30, 2017 , AED 6,538 was utilized (approximately $1,779 ). The credit facility is subject to periodic review by the bank and as such has been classified as current in the consolidated balance sheet. The interest rate is the one-month Emirates InterBank Offer Rate plus 3.50% (or 5.50% at September 30, 2017 ) but no less than 5.50% . This facility allows for letters of guarantee up to AED 200,000 (approximately $54,431 at September 30, 2017 ) of which AED 97,182 (approximately $26,448 ) was outstanding at September 30, 2017 . Engineering S.A. maintains four unsecured revolving credit facilities with two banks in Brazil aggregating 2,380 Brazilian Reais (BRL) (approximately $752 ) at September 30, 2017 , with a weighted average interest rate of 4.76% per month at September 30, 2017 . There were no borrowings outstanding on any of these facilities at September 30, 2017 or December 31, 2016 , which are renewed automatically every three months . The Company also maintains relationships with other foreign banks for the issuance of letters of credit, letters of guarantee and performance bonds in a variety of foreign currencies. At September 30, 2017 , the maximum U.S. dollar equivalent of the commitments was $84,087 , of which $34,824 is outstanding. In connection with the 2015 move of its corporate headquarters to Philadelphia, Pennsylvania, the Company received a loan from the Philadelphia Industrial Development Corporation in the amount of $750 which bears interest at 2.75% , is repayable in 144 equal monthly installments of $6 and matures on April 1, 2027.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information The following table provides additional cash flow information (in thousands): Nine Months Ended September 30, 2017 2016 Interest and related financing fees paid $ 5,831 $ 8,915 Income taxes paid $ 7,713 $ 9,435 Increase (decrease) in other current liabilities and decrease (increase) in additional paid-in capital related to ESA Put Options $ (777 ) $ 2,670 Increase in additional paid-in capital from the issuance of shares of common stock from cashless exercise of stock options $ — $ 729

Earnings per Share

Earnings per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings per Share	Earnings per Share Basic earnings per common share have been computed using the weighted-average number of shares of common stock outstanding during the period. On May 10, 2017 the Company's Board of Directors approved a monthly grant of Company stock valued at $80 per month to the Interim Chief Executive Officer ("ICEO") during his term of service, to be delivered to him on the last day of his service as ICEO. There is no circumstance in which these shares will not be issued, therefore, the accumulated shares are included in basic shares outstanding and in the computation of weighted averages basic shares. Basic shares outstanding included 50 shares and 81 shares related to this grant in the three and nine months ended September 30, 2017 , respectively. Diluted earnings per common share incorporates the incremental shares issuable upon the assumed exercise of stock options using the treasury stock method, if dilutive. Options to purchase approximately 1,541 shares and 6,480 shares for the three month periods ended September 30, 2017 and 2016 , respectively, and 2,079 shares and 6,478 shares for the nine month periods ended September 30, 2017 and 2016 , respectively, were excluded from the calculation of diluted earnings per share because they were antidilutive.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Share-Based Compensation At September 30, 2017 , the Company had approximately 5,527 options outstanding with a weighted average exercise price of $4.23 . During the nine months ended September 30, 2017 , the Company granted approximately 716 options which vest over a five -year period. The options granted had a weighted average exercise price of $4.98 and a contractual life of 7.0 years. The aggregate fair value of the options was approximately $1,400 calculated using the Black-Scholes valuation model. The weighted average assumptions used to calculate fair value were: expected life— 5 years; volatility— 48.30% and risk-free interest rate— 2.08% . During the nine months ended September 30, 2017 , options for approximately 1,541 shares with a weighted average exercise price of $5.41 lapsed and options for approximately 222 shares with a weighted average exercise price of $4.41 were forfeited. During the three and nine months ended September 30, 2017 , employees purchased approximately 5 and 36 common shares, respectively, for an aggregate purchase price of approximately $24 and $138 , respectively, pursuant to the Company’s 2008 Employee Stock Purchase Plan. The Company recognized share-based compensation expense in selling, general and administrative expenses in the consolidated statement of operations totaling approximately $1,048 and $581 for the three months ended September 30, 2017 and 2016 , respectively, and approximately $2,261 and $1,838 for the nine months ended September 30, 2017 and 2016 , respectively. On May 10, 2017 the Company's Board of Directors approved a monthly grant of Company stock valued at $80 per month to the Interim Chief Executive Officer ("ICEO") during his term of service. At the end of each month during such period, the ICEO is entitled to $80 worth of Company stock based on the closing price of the Company's common stock on the last trading day of the month. The aggregate number of shares earned will be delivered to the ICEO on his the last day of service as ICEO. During the three and nine month periods ended September 30, 2017 , the ICEO accumulated 50 shares and 81 shares, respectively. The value of the shares accumulated is remeasured each reporting period. The change in value from the previous reporting period is recorded as an adjustment to compensation expense. The Company recorded compensation expense of $221 and $386 for the three and nine months ended September 30, 2017 , respectively related to these monthly grants. The ultimate value of these grants cannot be determined until the shares are delivered, therefore, the accumulated value of these shares is recorded in accrued expenses and will be reclassified to equity when the shares are ultimately delivered on the ICEO's last day of service.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity The following table summarizes the changes in stockholders’ equity during the nine months ended September 30, 2017 (in thousands): Total Hill International, Inc. Stockholders Noncontrolling Interest Stockholders’ equity, December 31, 2016 $ 76,352 $ 74,358 $ 1,994 Net (loss) earnings 37,424 37,249 175 Other comprehensive earnings (273 ) (536 ) 263 Comprehensive (loss) earnings 37,151 36,713 438 Additional paid in capital 5,537 5,537 — Stockholders’ equity, September 30, 2017 $ 119,040 $ 116,608 $ 2,432

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rates for the three months ended September 30, 2017 and 2016 were 40.1% and (27.0)% , respectively, and 39.0% and 272.7% for the nine months ended September 30, 2017 and 2016 , respectively. The Company’s effective tax rate represents the Company’s estimated tax rate for the year based on projected income and mix of income among the various foreign tax jurisdictions, adjusted for discrete transactions occurring during the period. The Company’s effective tax rate in both years is higher than it otherwise would be primarily as a result of not recording an income benefit related to the U.S. net operating loss. The components of (loss) earnings before income taxes and the related income tax expense by the United States and foreign jurisdictions were as follows (in thousands): Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 (As Restated) U.S. Foreign Total U.S. Foreign Total (Loss) earnings before income taxes (4,505 ) $ 1,842 $ (2,663 ) $ (8,050 ) $ (542 ) $ (8,592 ) Income tax (benefit) expense, net (1,892 ) $ 824 $ (1,068 ) $ — $ 2,318 $ 2,318 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 (As Restated) U.S. Foreign Total U.S. Foreign Total (Loss) earnings before income taxes (8,613 ) $ 7,670 $ (943 ) $ (21,512 ) $ 23,537 $ 2,025 Income tax (benefit) expense, net (3,618 ) $ 3,250 $ (368 ) $ — $ 5,523 $ 5,523 The reserve for uncertain tax positions amounted to $2,319 and $6,735 at September 30, 2017 and December 31, 2016 , respectively, and is included in “Other liabilities” in the consolidated balance sheet at those dates. The Company’s policy is to record income tax related interest and penalties in income tax expense. There were no such items related to uncertain tax positions for the three and nine months ended September 30, 2017 and 2016 , respectively. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities and projected future taxable income in making this assessment. Management evaluates the need for valuation allowances on the deferred tax assets according to the provisions of ASC 740, Income Taxes. They consider both positive and negative evidence. In making this determination, management assesses all of the evidence available at the time including recent earnings, internally-prepared income projections, and historical financial performance. The 2017 continuing operations tax benefit in the United States is a result of the allocation of the United States operating loss being utilized to offset the gain in discontinued operations.

Segment and Related Information

Segment and Related Information	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Segment and Related Information	Segment and Related Information At September 30, 2017 , due to the sale of the Construction Claims Group (see Note 2), the Company now has one operating segment, the Project Management Group, which reflects how the Company is currently being managed. The Project Management Group 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 and facilities management services. The information for 2016 has been revised to exclude the operations of the Construction Claims Group which is accounted for as discontinued operations. The following tables present certain information for the Project Management Group’s operations (in thousands): Revenue by Geographic Region Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (As restated) (As restated) United States* $ 59,640 48.4 % $ 50,675 41.8 % $ 169,229 46.4 % $ 148,194 37.8 % Latin America 2,889 2.3 % 4,759 3.9 % 9,189 2.5 % 15,154 3.9 % Europe 10,811 8.8 % 10,198 8.4 % 30,931 8.5 % 29,926 7.7 % Middle East 42,248 34.3 % 45,580 37.6 % 131,211 36.0 % 166,887 42.7 % Africa 6,034 4.9 % 5,946 4.9 % 17,651 4.8 % 18,659 4.8 % Asia/Pacific 1,570 1.3 % 4,064 3.4 % 6,537 1.8 % 12,010 3.1 % Total $ 123,192 100.0 % $ 121,222 100.0 % $ 364,748 100.0 % $ 390,830 100.0 % * includes Canada For the three and nine months ended September 30, 2017 , the United States was the only country to account for over 10% of consolidated total revenue. For the three and nine months ended September 30, 2016, total revenue for the United Arab Emirates was $17,431 or 14.4% and $64,221 or 16.4% of consolidated total revenue, respectively. The United States was the only other country to account for over 10% of consolidated total revenue during the three and nine months ended September 30, 2016. Operating Profit (Loss) Three Months Ended Nine Months Ended 2017 2016 2017 2016 (As restated) (As restated) United States $ 6,350 $ 5,562 $ 17,730 $ 13,710 Latin America 88 (668 ) (2,431 ) 1,520 Europe (57 ) 409 3,763 (818 ) Middle East 4,042 (3,296 ) 15,402 15,326 Africa 180 232 (533 ) (878 ) Asia/Pacific (658 ) 94 (1,106 ) 909 Corporate (11,573 ) (10,319 ) (31,702 ) (25,934 ) Total $ (1,628 ) $ (7,986 ) $ 1,123 $ 3,835 Depreciation and Amortization Expense Three Months Ended Nine Months Ended 2017 2016 2017 2016 (As restated) (As restated) Project Management $ 1,422 $ 1,263 $ 4,397 $ 5,237 Corporate 334 217 614 452 Total $ 1,756 $ 1,480 $ 5,011 $ 5,689 Revenue By Client Type Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (As restated) (As restated) U.S. federal government $ 3,729 3.0 % $ 3,055 2.5 % $ 10,965 3.0 % $ 8,716 2.2 % U.S. state, regional and local governments 43,177 35.0 % 40,182 33.1 % 119,132 32.7 % 113,302 29.0 % Foreign governments 33,524 27.2 % 34,000 28.0 % 105,546 28.9 % 129,045 33.0 % Private sector 42,762 34.8 % 43,985 36.4 % 129,105 35.4 % 139,767 35.8 % Total $ 123,192 100.0 % $ 121,222 100.0 % $ 364,748 100.0 % $ 390,830 100.0 % Property, Plant and Equipment, Net, by Geographic Location September 30, 2017 December 31, 2016 United States/Canada $ 10,983 $ 12,626 Latin America 598 881 Europe 882 218 Middle East 1,250 1,645 Africa 113 169 Asia/Pacific 114 850 Total $ 13,940 $ 16,389

Client Concentrations

Client Concentrations	9 Months Ended
	Sep. 30, 2017
Risks and Uncertainties [Abstract]
Client Concentrations	Client Concentrations The Company had no individual clients that accounted for 10% or more of total revenues during the three and nine months ended September 30, 2017 and 2016 .

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies General Litigation 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 matters 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 matter. 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 matters will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows. In 2013, M.A. Angeliades, Inc. (“Plaintiff”) filed a complaint with the Supreme Court of New York against the Company and the New York City Department of Design and Construction (“DDC”) regarding payment of approximately $8,771 for work performed as a subcontractor to the Company plus interest and other costs. On October 5, 2015, pursuant to a settlement agreement, Hill paid Plaintiff approximately $2,596 , including interest amounting to $1,056 , of which $448 had been previously accrued and $608 was charged to expense for the year ended December 31, 2015. The Plaintiff resolved its remaining issues regarding change orders and compensation for delay with DDC. On January 16, 2016, Plaintiff filed a Motion to amend its complaint against the Company claiming that the amounts paid by the Company do not reconcile with the amounts Plaintiff believes the Company received from DDC despite DDC’s records reflecting the same amount as the Company’s. The Plaintiff’s Motion was granted and the parties are currently engaged in mediation and discovery. 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. The Company is evaluating the impact of the judgment of the Court. Acquisition-Related Contingencies As of September 30, 2017 our subsidiary, Hill International (Spain), S.A. (“Hill Spain”), owned an indirect 91.0% interest in Engineering S.A. (“ESA”), a firm located in Brazil. ESA’s shareholders entered into an agreement whereby the minority shareholders have a right to compel (“ESA Put Option”) Hill Spain to purchase any or all of their shares during the period from February 28, 2014 to February 28, 2021. Hill Spain also has the right to compel (“ESA Call Option”) the minority shareholders to sell any or all of their shares during the same time period. The purchase price for such shares shall be seven times the earnings before interest and taxes for ESA’s most recently ended fiscal year, net of any financial debt plus excess cash multiplied by a percentage which the shares to be purchased bear to the total number of shares outstanding at the time of purchase, but in the event the ESA Call Option is exercised by Hill Spain, the purchase price shall be increased by five percent . The ESA Put Option and the ESA Call Option must be made within three months after the audited financial statements of ESA have been completed. On June 17, 2016, the three remaining minority shareholders exercised their ESA Put Options claim for a value of BRL 8,656 (approximately $2,734 at September 30, 2017 ). At that time, the Company accrued the liability in other current liabilities and as an adjustment to additional paid in capital. The amount is subject to negotiation and any difference will be recorded upon completion of the transaction. See Note 18 Subsequent Events. 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 $2,132 of which approximately $444 had been included in discontinued operations in the consolidated statement of operations for the nine months ended September 30, 2017. The potential liability balance is included in other liabilities in the consolidated balance sheet at September 30, 2017 . In connection with the move of its corporate headquarters, the Commonwealth of Pennsylvania provided the Company with a $1,000 grant received on July 13, 2015. The terms of the grant require the Company to spend at least $6,425 on capital expenditures for leasehold improvements and equipment for its new headquarters, remain at One Commerce Square for at least seven -years and employ at least 359 persons no later than April 1, 2018. The Company has met the capital expenditure requirement and has a twelve -year lease for its corporate headquarters. Upon receipt of the funds, the Company recorded a deferred credit which, assuming the employment requirement is met, will be reflected in income in the second quarter of 2018. If the Company does not meet the employment criteria, it will be required to repay the grant to the Commonwealth of Pennsylvania. The terms of the agreement are currently under review. The landlord for the new Philadelphia headquarters provided the Company with a tenant improvement allowance amounting to approximately $3,894 . The tenant improvement allowance, which has been deferred, is included in other liabilities in the consolidated balance sheet at September 30, 2017 and December 31, 2016 and is being amortized on a straight-line basis against rent expense over the term of the twelve -year lease which commenced on May 1, 2015.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Finalization of ESA Put Option The Company settled negotiations with the minority shareholders of ESA in November 2017 and February 2018. The shareholders agreed to a reduced total payment of BRL 6,084 (approximately $1,922 ), which was reflected in the balance sheet at September 30, 2017. The Company made an adjustment to additional paid-in capital in the consolidated balance sheet at December 31, 2017 of BRL 4,475 (approximately $1,365 ) and on March 31, 2018 of BRL 3,146 (approximately $953 ) to record the final transaction amounts. Tax Cuts and Jobs Act On December 22, 2017, The Tax Cuts and Jobs Act of 2017 (Tax Act) was signed into law. The Tax Act will reduce the Company’s statutory U.S. federal corporate tax rate from 35% to 21% for the Company’s fiscal year beginning January 1, 2018. The Tax Act requires companies to pay a one-time transition tax on accumulated earnings of foreign subsidiaries, creates new taxes on certain foreign sourced earnings and eliminates or reduces certain deductions and credits. As of the time of this filing, the Company has not completed its evaluation of the effects of enactment of the Tax Act. Because a change in tax law is accounted for in the period of enactment, the effect of the Act will be recorded in the fourth quarter of 2017. Kuwait Performance Guarantee On or about February 8, 2018, the Company received notice from National Bank of Abu Dhabi (NBAD) that Public Authority of Housing Welfare of Kuwait submitted a claim for payment on a performance guarantee issued by the Company for approximately $7,927 for a project located in Kuwait. NBAD subsequently issued, on behalf of Company, payment on February 15, 2018. The Company is taking legal action to recover the full amount issued under the performance guarantee.

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements were prepared in accordance with the rules and regulations of the Securities and Exchange Commission 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/A (Amendment No. 2) for the year ended December 31, 2016. Accordingly, they do not include all of the information and footnotes required by US 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 US 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.
New Accounting Pronouncements	New Accounting Pronouncements For information with respect to new accounting pronouncements and the impact of these pronouncements on our consolidated financial statements, see Note 5 to the consolidated financial statements in Item 8 of Form 10K/A (Amendment No. 2) for the year ended December 31, 2016 filed with the SEC on May 4, 2018. There have been no new pronouncements impacting our consolidated financial statements since that filing. See update below. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU supersedes the revenue recognition requirements in FASB ASC 605, Revenue Recognition, and most industry-specific topics. The new guidance identifies how and when entities should recognize revenue. The new rules establish a core principle requiring the recognition of revenue to depict the transfer of promised goods or services to customers in an amount reflecting the consideration to which the entity expects to be entitled in exchange for such goods or services. In connection with this new standard, the FASB has issued several amendments to ASU 2014-09 to provide additional clarification and implementation instructions relating to (i) principal versus agent considerations, (ii) identifying performance obligations and licensing, (iii) narrow-scope improvements and practical expedients and (iv) technical corrections and improvements. However, none of the amendments change the core principle of the guidance in ASU 2014-09. The new guidance in ASU 2014-09, as well as all amendments, is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. The new guidance permits two methods of adoption, full retrospective or modified retrospective, and the Company anticipates that it will use the modified retrospective method of adoption in which the cumulative effect of applying the ASU will be recognized at January 1, 2018, the date of initial application. Management has implemented a plan of adoption and is continuing to evaluate the impact that adoption of this guidance will have on the Company’s financial statements. The Company’s implementation plan includes the following: • Forming an ASU 2014-09 working group comprised of management representatives. • Analyzing the Company’s revenue streams. • Selecting representative contracts within each revenue stream for evaluation under ASU 2014-09. • Identifying the impact from the standard on current business processes. • Evaluating additional disclosure requirements and monitoring changes to the Company’s internal controls. Management has commenced its plan for adoption of ASU 2014-09 by reviewing various types of revenue contracts and disaggregated the revenue into two revenue streams: (i) fixed price and (ii) time and materials. Thus far, from its contract reviews, the Company does not anticipate a material impact to its results of operations as the pattern of revenue recognition and the measurement of variable consideration is expected to be consistent under the new standard. However, the Company’s initial assessment of the impact could change as the adoption plan progresses. The Company expects that there will be an impact to financial reporting due to the enhanced revenue disclosures and internal control over financial reporting due to the new disclosure requirements of ASC 606. The Company will adopt the requirements of the new standard effective January 1, 2018, in the Company's Form 10-Q for the three months ended March 31, 2018.

The Company (Tables)

The Company (Tables)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of corrections of the misstatement on the Company's consolidated balance sheets and consolidated statements of income, comprehensive income (loss) and cash flows	Restatement of Previously Issued Unaudited Consolidated Financial Statements On May 8, 2018, the Company filed its Annual Report on Form 10-K/A for the year ended December 31, 2016 , which amended the Company’s audited consolidated financial statements for each of the years ended December 31, 2016, 2015 and 2014 and the related notes thereto. This Form 10-Q amends the Company’s unaudited consolidated financial statements for the three and nine months ended September 30, 2016 and the related notes thereto, included on Form 10-Q filed on August 8, 2016 (“Prior Filing”). The Restatement reflects the correction of the following errors identified for the three and nine months ended September 30, 2016 subsequent to the Prior Filing and the impact of restating the three months ended March 31, 2017 on the nine months ended September 30, 2017 : A. In connection with the accounting for the May 2017 sale of its Construction Claims Group, the Company determined that it had not previously accounted for certain foreign currency gains/losses on intercompany balances and transactions in accordance with accounting principles generally accepted in the United States (“US GAAP”). The Company improperly accounted for the foreign currency effect of certain transactions as if they were long-term investments by including the foreign currency effect in accumulated other comprehensive income instead of properly recording the effect as operating expenses as required under Accounting Standard Codification (ASC) 830 “Foreign Currency Matters.” As a result of these corrections, selling, general and administrative (“SG&A”) expenses increased $710 for the three months ended September 30, 2016 ; and decreased $1,813 and increased $1,186 for the nine months ended September 30, 2017 and 2016 , respectively. B. The Company identified departures from US GAAP under ASC 605-35 “Construction-Type and Production-Type Contracts” in its historical accounting for revenue recognition on nine long-term customer contracts with fee constraints (e.g., fixed fee, lump sum, maximum contract value). The Company enters into agreements for construction management and consulting services with customers, and the guidance of ASC 605-35-15-3D states that contracts for construction consulting services, such as under agency contracts or construction management agreements, fall within the scope of the standard and should follow either Percentage of Completion or Completed Contract methods of accounting. Historically, the Company had not consistently applied the percentage of completion method of revenue recognition. The corrections to properly apply U.S. GAAP to the identified contracts resulted in a decrease of $4,655 to revenues for the three months ended September 30, 2016 ; and increase of $3,130 and decrease of $499 to revenues for the nine months ended September 30, 2017 and 2016 , respectively. C. The Company discovered that it had not properly performed the required impairment testing of amortizable intangible assets in accordance with US GAAP in that certain assets no longer in use were not identified and impaired. In addition, an improper useful life was used for some of the Company’s internally developed software assets resulting in an improper amount of amortization expense being recorded in previous periods. The net effect of correcting these errors resulted in a $28 increase in SG&A expense for the three months ended September 30, 2016 ; and increases of $29 and $83 in SG&A expense for the nine months ended September 30, 2017 and 2016 , respectively. D. The Company identified other transactions that had been recorded to incorrect accounts and/or in improper amounts. The net corrections of these transactions resulted in an increase of $5 and a decrease of $757 in revenues for the three and nine months ended September 30, 2016 , respectively, and a $5,421 increase in revenues for the nine months ended September 30, 2017 ; a $5,305 increase in direct expenses for the nine months ended September 30, 2017; a decrease of $798 and $3,306 in SG&A expenses for the three and nine months ended September 30, 2016 , respectively and an increase of $473 in SG&A expenses for the nine month ended September 30, 2017 ; a $415 and a $1,245 , increase in interest expenses for the three and nine months ended September 30, 2016 , respectively; a $261 and $1,829 increase in net loss from discontinued operations for the three and nine months ended September 30, 2016, respectively and a $1,057 decrease in net loss from discontinued operations for the nine months ended September 30, 2017 ; and a $15 and $45 decrease in earnings from noncontrolling interest for the three and nine months ended September 30, 2016 , respectively and a $58 increase in earnings from noncontrolling interest for the nine months ended September 30, 2017 . In conjunction with the sale of the construction claims group, interest expense of $676 and $3,075 for the three and nine months ended September 30, 2016 , respectively, and interest expense of $552 for the nine months ended September 30, 2017 was reclassified from continuing operations to discontinued operations. E. Some of the corrections noted above impacted earnings (loss) before taxes which, in turn, required a calculation of the tax impact. The net impact was a decrease in income tax expense of $571 and $263 for the three and nine months ended September 30, 2016 , respectively and an increase in income tax expense of $695 for the nine months ended September 30, 2017 . HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF OPERATIONS Three Months Ended September 30, 2016 (in thousands, except per share data) As Previously Reported Adjustment As Restated Reference Revenues $ 125,872 $ (4,650 ) $ 121,222 B, D Direct expenses 82,329 — 82,329 Gross profit 43,543 (4,650 ) 38,893 Selling, general and administrative expenses 46,927 (60 ) 46,867 A, C, D Share of loss of equity method affiliates 12 — 12 Operating loss (3,396 ) (4,590 ) (7,986 ) Interest and related financing fees, net 191 415 606 D Loss before income taxes (3,587 ) (5,005 ) (8,592 ) Income tax expense 2,889 (571 ) 2,318 E Loss from continuing operations (6,476 ) (4,434 ) (10,910 ) Loss from discontinued operations (279 ) (261 ) (540 ) D Net loss (6,755 ) (4,695 ) (11,450 ) Less: net earnings - noncontrolling interests 111 (15 ) 96 D Net loss attributable to Hill International, Inc. $ (6,866 ) $ (4,680 ) $ (11,546 ) Basic loss per common share from continuing operations $ (0.13 ) $ (0.08 ) $ (0.21 ) Basic loss per common share from discontinued operations — (0.01 ) (0.01 ) Basic loss per common share - Hill International, Inc. $ (0.13 ) $ (0.09 ) $ (0.22 ) Basic weighted average common shares outstanding 51,753 — 51,753 Diluted loss per common share from continuing operations $ (0.13 ) $ (0.08 ) $ (0.21 ) Diluted loss per common share from discontinued operations — (0.01 ) (0.01 ) Diluted loss per common share - Hill International, Inc. $ (0.13 ) $ (0.09 ) $ (0.22 ) Diluted weighted average common shares outstanding 51,753 — 51,753 HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF OPERATIONS Nine Months Ended September 30, 2016 (in thousands, except per share data) As Previously Reported Adjustment As Restated Reference Revenues $ 392,087 $ (1,257 ) $ 390,830 B, D Direct expenses 267,984 — 267,984 Gross profit 124,103 (1,257 ) 122,846 Selling, general and administrative expenses 121,020 (2,037 ) 118,983 A, C, D Share of loss of equity method affiliates 28 — 28 Operating profit 3,055 780 3,835 Interest and related financing fees, net 565 1,245 1,810 D Earnings before income taxes 2,490 (465 ) 2,025 Income tax expense 5,786 (263 ) 5,523 E Loss from continuing operations (3,296 ) (202 ) (3,498 ) Loss from discontinued operations (528 ) (1,829 ) (2,357 ) D Net loss (3,824 ) (2,031 ) (5,855 ) Less: net earnings - noncontrolling interests 102 (45 ) 57 D Net loss attributable to Hill International, Inc. (3,926 ) (1,986 ) (5,912 ) Basic loss per common share from continuing operations $ (0.07 ) $ — $ (0.07 ) Basic loss per common share from discontinued operations (0.01 ) (0.03 ) (0.04 ) Basic loss per common share - Hill International, Inc. $ (0.08 ) $ (0.03 ) $ (0.11 ) Basic weighted average common shares outstanding 51,704 — 51,704 Diluted loss per common share from continuing operations $ (0.07 ) $ — $ (0.07 ) Diluted loss per common share from discontinued operations (0.01 ) (0.03 ) (0.04 ) Diluted loss per common share - Hill International, Inc. $ (0.08 ) $ (0.03 ) $ (0.11 ) Diluted weighted average common shares outstanding 51,704 — 51,704 HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Three Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Reference Net loss $ (6,755 ) $ (4,695 ) $ (11,450 ) A, B, C, D, E Foreign currency translation adjustment, net (1,638 ) 1,478 (160 ) A, B, C, D Other, net 79 — 79 Comprehensive loss $ (8,314 ) $ (3,217 ) $ (11,531 ) Comprehensive earnings attributable to noncontrolling interest 132 1,782 1,914 Comprehensive loss attributable to Hill International Inc. $ (8,446 ) (4,999 ) $ (13,445 ) HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Nine Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Reference Net earnings $ (3,824 ) $ (2,031 ) $ (5,855 ) A, B, C, D, E Foreign currency translation adjustment, net (1,257 ) 1,675 418 A, B, C, D Other, net 135 — 135 Comprehensive loss $ (4,946 ) $ (356 ) (5,302 ) Comprehensive (loss) earnings attributable to noncontrolling interest (1,223 ) 1,617 394 Comprehensive loss attributable to Hill International Inc. $ (3,723 ) $ (1,973 ) $ (5,696 ) In addition to the items noted above as part of the Restatement, the Company identified departures from US GAAP in its historical preparation and presentation of its statement of cash flows. The Company did not report its cash flows in the reporting currency equivalent of foreign currency using the exchange rates in effect at the time of the cash flows, or an appropriate average rate to approximate the rates in effect at the time of the cash flows. The impact of properly preparing a cash flow statement in each functional currency, translating the cash flow statement using the appropriate rate in effect at the time of a transaction, or substantially equivalent average rate for the period, and consolidation of the individual functional currency cash flows, as prescribed by the guidance in ASC 230, is depicted in the table below. The adjustments noted in the cash flow statements that follow are both a result of items “A” through “E” explained above, as well as the foreign currency effect from cash flow statements prepared in functional currency and appropriately translated. HILL INTERNATIONAL, INC. AND SUBSIDIARIES CONSOLIDATED STATEMENT OF CASH FLOW Nine Months Ended September 30, 2016 (in thousands) As Previously Reported Adjustment As Restated Cash flows from operating activities: Net loss $ (3,824 ) $ (2,031 ) $ (5,855 ) Loss from discontinued operations — 2,357 2,357 Loss from continuing operations (3,824 ) 326 (3,498 ) Adjustments to reconcile net loss to net cash provided by (used in): Depreciation and amortization 7,705 (2,016 ) 5,689 Provision for bad debts 11,879 (1,052 ) 10,827 Amortization of deferred loan fees 1,334 — 1,334 Deferred tax benefit 663 (1,348 ) (685 ) Stock based compensation 1,838 (158 ) 1,680 Unrealized foreign exchange losses (gains) on intercompany balances — 7,463 7,463 Changes in operating assets and liabilities: Restricted cash (69 ) (121 ) (190 ) Accounts receivable 2,652 (6,120 ) (3,468 ) Accounts receivable - affiliate (5,665 ) (113 ) (5,778 ) Prepaid expenses and other current assets (1,001 ) 330 (671 ) Income taxes receivable (756 ) (6 ) (762 ) Retainage receivable (14,583 ) 85 (14,498 ) Other assets 5,191 1,753 6,944 Accounts payable and accrued expenses (8,582 ) (240 ) (8,822 ) Income taxes payable (3,951 ) 275 (3,676 ) Deferred revenue 124 6,906 7,030 Other current liabilities 2,639 (1,035 ) 1,604 Retainage payable (1,308 ) 249 (1,059 ) Other liabilities 385 1,050 1,435 Net cash (used in) provided by continuing operations (5,329 ) 6,228 899 Net cash provided by discontinued operations — 72 72 Net cash (used in) provided by in operating activities (5,329 ) 6,300 971 Cash flows from investing activities: Payments for purchase of property and equipment (2,584 ) 1,086 (1,498 ) Net cash used in investing activities of continuing operations (2,584 ) 1,086 (1,498 ) Net cash used in investing activities of discontinued operations — (920 ) (920 ) Net cash used in investing activities (2,584 ) 166 (2,418 ) Cash flows from financing activities: Payments on term loans (900 ) — (900 ) Net borrowings on revolving loans 8,950 (13 ) 8,937 Payments on Philadelphia Industrial Development Corporation loan (41 ) — (41 ) Deferred acquisition price payments (1,531 ) — (1,531 ) Dividends paid to noncontrolling interest (111 ) 2 (109 ) Proceeds from stock issued under employee stock purchase plan 65 9 74 Proceeds from exercise of stock options 220 (1 ) 219 Net cash provided by financing activities 6,652 (3 ) 6,649 Effect of exchange rate changes on cash (1,609 ) (6,463 ) (8,072 ) Net decrease in cash and cash equivalents (2,870 ) — (2,870 ) Cash and cash equivalents — beginning of period 24,089 — 24,089 Cash and cash equivalents — end of period $ 21,219 $ — $ 21,219

Discontinued Operations and S27

Discontinued Operations and Sale of Business Unit (Tables)	9 Months Ended
	Sep. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Schedule of the carrying amounts of assets and liabilities and earnings related to discontinued operations	The carrying amounts of assets and liabilities of the discontinued operations of the Claims Group that were classified as held for sale are as follows (in thousands): April 30, 2017 December 31, 2016 Accounts receivable, net 47,611 50,892 Prepaid expenses and other current assets 3,153 3,064 Income taxes receivable — 695 Total current assets classified as held for sale $ 50,764 $ 54,651 Property and equipment, net 5,786 4,617 Acquired intangibles, net 3,289 3,397 Goodwill 23,454 23,461 Investments 5 6 Other assets 2,860 610 Total non-current assets classified as held for sale $ 35,394 $ 32,091 Accounts payable and accrued expenses 15,960 21,539 Income taxes payable (17 ) 92 Deferred revenue — 1,562 Other current liabilities 15,867 2,695 Total current liabilities classified as held for sale $ 31,810 $ 25,888 Deferred income taxes — 385 Deferred revenue 92 1,012 Retained Earnings — 457 Other liabilities 1,257 3,233 Total non-current liabilities classified as held for sale $ 1,349 $ 5,087 Net Assets $ 52,999 55,767 The line items constituting earnings from discontinued operations consist of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 (1) 2016 2017 (1) 2016 (As restated) (As restated) Revenues $ — $ 42,203 $ 62,149 $ 127,909 Direct expenses — 18,872 31,339 58,919 Gross profit — 23,331 30,810 68,990 Selling, general and administrative expenses (2) 727 21,118 33,874 61,901 Operating (loss) profit (727 ) 2,213 (3,064 ) 7,089 Interest and related financing fees, net (3) — 2,762 8,858 8,293 Loss before income taxes (727 ) (549 ) (11,922 ) (1,204 ) Pretax gain on the disposal of discontinued operations (4) — — 61,443 — Earnings from discontinued operations before income taxes (727 ) (549 ) 49,521 (1,204 ) Income tax expense (benefit) (5) 1,917 (9 ) 11,522 1,153 Net gain (loss) from discontinued operations $ (2,644 ) $ (540 ) $ 37,999 $ (2,357 ) (1) Results of operations for the Claims Group are reflected through April 30, 2017, the effective closing date of the Claims Group sale. (2) No amortization or depreciation expense was recorded by the Company in 2017 as the Claims Group’s assets were held for sale as of December 31, 2016. (3) In connection with the sale of the Claims Group, the Company was required to pay off its existing term loan facility and amend and pay down its existing revolving credit facilities (See Note 9). Interest expense and debt issuance costs attributable to the Claims Group were charged to discontinued operations. (4) The pretax gain on the sale of the Construction Claims Group was calculated as follows (in thousands): Adjusted purchase price $129,364 Cash transferred to buyer 4,041 Net proceeds received from Purchaser $125,323 Less net assets held for sale 52,999 Less other adjustments 10,881 Pretax gain on disposal $ 61,443 (5) The effective tax rates on pretax income from discontinued operations were (263.7)% and 23.3% for the three and nine months ended September 30, 2017, respectively. The 2017 rate differs from the U.S. federal statutory rate of 35% primarily due to the taxability of the gain on the sale in the U.S and foreign jurisdictions. The “gain on disposal of discontinued operations, net of tax” decreased during the 3-months ended September 30, 2017 due to an increase in tax expense. The tax expense of $1,917 is offset by a tax benefit to continuing operations of $1,893 from the use of its additional loss for the 3-months ended September 30, 2017.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of components of accounts receivable	The components of accounts receivable are as follows (in thousands): September 30, 2017 December 31, 2016 Billed $ 190,881 $ 200,134 Retainage, current portion 10,950 10,824 Unbilled 21,683 24,968 223,514 235,926 Allowance for doubtful accounts (67,952 ) (71,082 ) Total $ 155,562 $ 164,844

Intangible Assets (Tables)

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of acquired intangible assets	The following table summarizes the Company’s acquired intangible assets (in thousands): September 30, 2017 December 31, 2016 Gross Accumulated Gross Accumulated Client relationships $ 17,534 $ 13,420 $ 16,699 $ 11,298 Acquired contract rights 2,043 2,007 2,058 1,912 Trade names 897 491 959 500 Total $ 20,474 $ 15,918 $ 19,716 $ 13,710 Intangible assets, net $ 4,556 $ 6,006
Summary of amortization expense related to intangible assets	Amortization expense related to intangible assets was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2017 2017 2016 2017 2016 (As restated) (As restated) $ 493 $ 286 $ 1,556 $ 2,279
Summary of estimated amortization expense of intangible assets for the next five years	The following table presents the estimated amortization expense based on our present intangible assets for the next five years (in thousands): Estimated Amortization Expense Year ending December 31, 2017 (remaining 3 months) $ 485 2018 1,088 2019 990 2020 728 2021 338

Goodwill (Tables)

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of changes in the Company's carrying value of goodwill	The following table summarizes the changes in the Company’s carrying value of goodwill during 2017 (in thousands): Balance, December 31, 2016 $ 50,665 Translation adjustments 2,376 Balance, September 30, 2017 $ 53,041

Accounts Payable and Accrued 31

Accounts Payable and Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2017
Payables and Accruals [Abstract]
Schedule of components of accounts payable and accrued expenses	Below are the components of accounts payable and accrued expenses (in thousands): September 30, 2017 December 31, 2016 Accounts payable $ 29,002 $ 30,944 Accrued payroll and related expenses 34,006 32,618 Accrued subcontractor fees 11,112 9,188 Accrued agency fees 2,075 5,702 Accrued legal and professional fees 1,549 2,223 Other accrued expenses 4,973 5,005 $ 82,717 $ 85,680

Notes Payable and Long-Term D32

Notes Payable and Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Summary of outstanding debt obligations	Outstanding debt obligations are as follows (in thousands): September 30, 2017 December 31, 2016 2014 Term Loan Facility, net of unamortized discount and deferred financing costs of $4,416 at December 31, 2016 $ — $ 112,884 2017 Term Loan Facility, net of unamortized discount and deferred financing costs of $926 at September 30, 2017 28,999 — Domestic Revolving Credit Facility — 16,500 International Revolving Credit Facility — 11,102 Borrowings under credit facilities with a consortium of banks in Spain 2,747 2,962 Borrowings under overdraft credit facilities with the National Bank of Abu Dhabi 1,779 — Borrowings from Philadelphia Industrial Development Corporation 613 655 34,138 144,103 Less current maturities, net of unamortized discount and deferred financing costs of $157 and $1,778 at September 30, 2017 and December 31, 2016, respectively. 2,695 1,983 Notes payable and long-term debt, net of current maturities $ 31,443 $ 142,120

Supplemental Cash Flow Inform33

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2017
Supplemental Cash Flow Elements [Abstract]
Schedule of additional cash flow information	The following table provides additional cash flow information (in thousands): Nine Months Ended September 30, 2017 2016 Interest and related financing fees paid $ 5,831 $ 8,915 Income taxes paid $ 7,713 $ 9,435 Increase (decrease) in other current liabilities and decrease (increase) in additional paid-in capital related to ESA Put Options $ (777 ) $ 2,670 Increase in additional paid-in capital from the issuance of shares of common stock from cashless exercise of stock options $ — $ 729

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Stockholders' Equity Note [Abstract]
Summary of changes in stockholders' equity	The following table summarizes the changes in stockholders’ equity during the nine months ended September 30, 2017 (in thousands): Total Hill International, Inc. Stockholders Noncontrolling Interest Stockholders’ equity, December 31, 2016 $ 76,352 $ 74,358 $ 1,994 Net (loss) earnings 37,424 37,249 175 Other comprehensive earnings (273 ) (536 ) 263 Comprehensive (loss) earnings 37,151 36,713 438 Additional paid in capital 5,537 5,537 — Stockholders’ equity, September 30, 2017 $ 119,040 $ 116,608 $ 2,432

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Schedule of components of (loss) earnings before income taxes and the related income tax expense by the United States and foreign jurisdictions	The components of (loss) earnings before income taxes and the related income tax expense by the United States and foreign jurisdictions were as follows (in thousands): Three Months Ended September 30, 2017 Three Months Ended September 30, 2016 (As Restated) U.S. Foreign Total U.S. Foreign Total (Loss) earnings before income taxes (4,505 ) $ 1,842 $ (2,663 ) $ (8,050 ) $ (542 ) $ (8,592 ) Income tax (benefit) expense, net (1,892 ) $ 824 $ (1,068 ) $ — $ 2,318 $ 2,318 Nine Months Ended September 30, 2017 Nine Months Ended September 30, 2016 (As Restated) U.S. Foreign Total U.S. Foreign Total (Loss) earnings before income taxes (8,613 ) $ 7,670 $ (943 ) $ (21,512 ) $ 23,537 $ 2,025 Income tax (benefit) expense, net (3,618 ) $ 3,250 $ (368 ) $ — $ 5,523 $ 5,523

Segment and Related Informati36

Segment and Related Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Schedule of Revenue by Geographic Region	The following tables present certain information for the Project Management Group’s operations (in thousands): Revenue by Geographic Region Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (As restated) (As restated) United States* $ 59,640 48.4 % $ 50,675 41.8 % $ 169,229 46.4 % $ 148,194 37.8 % Latin America 2,889 2.3 % 4,759 3.9 % 9,189 2.5 % 15,154 3.9 % Europe 10,811 8.8 % 10,198 8.4 % 30,931 8.5 % 29,926 7.7 % Middle East 42,248 34.3 % 45,580 37.6 % 131,211 36.0 % 166,887 42.7 % Africa 6,034 4.9 % 5,946 4.9 % 17,651 4.8 % 18,659 4.8 % Asia/Pacific 1,570 1.3 % 4,064 3.4 % 6,537 1.8 % 12,010 3.1 % Total $ 123,192 100.0 % $ 121,222 100.0 % $ 364,748 100.0 % $ 390,830 100.0 %
Schedule of Operating Profit (Loss)	Operating Profit (Loss) Three Months Ended Nine Months Ended 2017 2016 2017 2016 (As restated) (As restated) United States $ 6,350 $ 5,562 $ 17,730 $ 13,710 Latin America 88 (668 ) (2,431 ) 1,520 Europe (57 ) 409 3,763 (818 ) Middle East 4,042 (3,296 ) 15,402 15,326 Africa 180 232 (533 ) (878 ) Asia/Pacific (658 ) 94 (1,106 ) 909 Corporate (11,573 ) (10,319 ) (31,702 ) (25,934 ) Total $ (1,628 ) $ (7,986 ) $ 1,123 $ 3,835
Schedule of Depreciation and Amortization Expense	Depreciation and Amortization Expense Three Months Ended Nine Months Ended 2017 2016 2017 2016 (As restated) (As restated) Project Management $ 1,422 $ 1,263 $ 4,397 $ 5,237 Corporate 334 217 614 452 Total $ 1,756 $ 1,480 $ 5,011 $ 5,689
Schedule of Revenue By Client Type	Revenue By Client Type Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (As restated) (As restated) U.S. federal government $ 3,729 3.0 % $ 3,055 2.5 % $ 10,965 3.0 % $ 8,716 2.2 % U.S. state, regional and local governments 43,177 35.0 % 40,182 33.1 % 119,132 32.7 % 113,302 29.0 % Foreign governments 33,524 27.2 % 34,000 28.0 % 105,546 28.9 % 129,045 33.0 % Private sector 42,762 34.8 % 43,985 36.4 % 129,105 35.4 % 139,767 35.8 % Total $ 123,192 100.0 % $ 121,222 100.0 % $ 364,748 100.0 % $ 390,830 100.0 %
Schedule of Property, Plant and Equipment, Net by Geographic Location	Property, Plant and Equipment, Net, by Geographic Location September 30, 2017 December 31, 2016 United States/Canada $ 10,983 $ 12,626 Latin America 598 881 Europe 882 218 Middle East 1,250 1,645 Africa 113 169 Asia/Pacific 114 850 Total $ 13,940 $ 16,389

The Company - Narrative (Detail

The Company - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restatement and Revision of Previously Reported Consolidated Financial Statements
Selling, general and administrative expenses	$ 38,945	$ 46,867	$ 112,482	$ 118,983
Revenues	123,192	121,222	364,748	390,830
Interest and related financing fees, net	1,035	606	2,066	1,810
Direct expenses	85,875	82,329	251,191	267,984
Increase (decrease) in net loss from discontinued operations	2,644	540	(37,999)	2,357
(Decrease) increase in income tax expense	$ (1,068)	2,318	(368)	5,523
Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Selling, general and administrative expenses		(60)		(2,037)
Revenues		(4,650)		(1,257)
Interest and related financing fees, net		415		1,245
Direct expenses		0		0
Increase (decrease) in net loss from discontinued operations		261		1,829
Correction for foreign currency gains (losses) | Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Selling, general and administrative expenses		710	(1,813)	1,186
Correction for revenue recognition on long-term customer contracts | Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Revenues		(4,655)	3,130	(499)
Correction for impairment, useful lives, depreciation and amortization of assets | Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Selling, general and administrative expenses		28	29	83
Correction for other transactions recorded to incorrect accounts and improper amounts | Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Selling, general and administrative expenses		(798)	473	(3,306)
Revenues		5	5,421	(757)
Interest and related financing fees, net		676	552	3,075
Direct expenses			5,305
Interest expense		415		1,245
Increase (decrease) in net loss from discontinued operations		261	(1,057)	1,829
(Decrease) increase in earnings from noncontrolling interest		(15)	58	(45)
Corrections for effect on pre-tax income | Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
(Decrease) increase in income tax expense		$ 571	$ 695	$ 263

The Company - Consolidated Stat

The Company - Consolidated Statement of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restatement and Revision of Previously Reported Consolidated Financial Statements
Revenues	$ 123,192	$ 121,222	$ 364,748	$ 390,830
Direct expenses	85,875	82,329	251,191	267,984
Gross profit	37,317	38,893	113,557	122,846
Selling, general and administrative expenses	38,945	46,867	112,482	118,983
Share of loss of equity method affiliates	0	12	(48)	28
Operating profit (loss)	(1,628)	(7,986)	1,123	3,835
Interest and related financing fees, net	1,035	606	2,066	1,810
(Loss) Earnings before income taxes	(2,663)	(8,592)	(943)	2,025
Income tax (benefit) expense	(1,068)	2,318	(368)	5,523
Loss from continuing operations	(1,595)	(10,910)	(575)	(3,498)
Loss from discontinued operations, net of income tax	(2,644)	(540)	37,999	(2,357)
Net (loss) earnings	(4,239)	(11,450)	37,424	(5,855)
Less: net earnings - noncontrolling interests	55	96	175	57
Net (loss) earnings attributable to Hill International, Inc.	$ (4,294)	$ (11,546)	$ 37,249	$ (5,912)
Basic (loss) earnings per common share from continuing operations (in dollars per share)	$ (0.03)	$ (0.21)	$ (0.01)	$ (0.07)
Basic loss per common share from discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.24)	(0.04)
Basic (loss) earnings per common share - Hill International, Inc. (in dollars per share)	$ (0.08)	$ (0.22)	$ 0.72	$ (0.11)
Basic weighted average common shares outstanding (in shares)	52,371	51,753	52,065	51,704
Diluted earnings (loss) per common share from continuing operations (in dollars per share)	$ (0.03)	$ (0.21)	$ (0.01)	$ (0.07)
Diluted earnings (loss) per common share from discontinued operations (in dollars per share)	(0.01)	(0.01)	(0.24)	(0.04)
Diluted (loss) earnings per common share - Hill International, Inc. (in dollars per share)	$ (0.08)	$ (0.22)	$ 0.72	$ (0.11)
Diluted weighted average common shares outstanding (in shares)	52,371	51,753	52,065	51,704
As Previously Reported
Restatement and Revision of Previously Reported Consolidated Financial Statements
Revenues		$ 125,872		$ 392,087
Direct expenses		82,329		267,984
Gross profit		43,543		124,103
Selling, general and administrative expenses		46,927		121,020
Share of loss of equity method affiliates		12		28
Operating profit (loss)		(3,396)		3,055
Interest and related financing fees, net		191		565
(Loss) Earnings before income taxes		(3,587)		2,490
Income tax (benefit) expense		2,889		5,786
Loss from continuing operations		(6,476)		(3,296)
Loss from discontinued operations, net of income tax		(279)		(528)
Net (loss) earnings		(6,755)		(3,824)
Less: net earnings - noncontrolling interests		111		102
Net (loss) earnings attributable to Hill International, Inc.		$ (6,866)		$ (3,926)
Basic (loss) earnings per common share from continuing operations (in dollars per share)		$ (0.13)		$ (0.07)
Basic loss per common share from discontinued operations (in dollars per share)		0		(0.01)
Basic (loss) earnings per common share - Hill International, Inc. (in dollars per share)		$ (0.13)		$ (0.08)
Basic weighted average common shares outstanding (in shares)		51,753		51,704
Diluted earnings (loss) per common share from continuing operations (in dollars per share)		$ (0.13)		$ (0.07)
Diluted earnings (loss) per common share from discontinued operations (in dollars per share)		0		(0.01)
Diluted (loss) earnings per common share - Hill International, Inc. (in dollars per share)		$ (0.13)		$ (0.08)
Diluted weighted average common shares outstanding (in shares)		51,753		51,704
Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Revenues		$ (4,650)		$ (1,257)
Direct expenses		0		0
Gross profit		(4,650)		(1,257)
Selling, general and administrative expenses		(60)		(2,037)
Share of loss of equity method affiliates		0		0
Operating profit (loss)		(4,590)		780
Interest and related financing fees, net		415		1,245
(Loss) Earnings before income taxes		(5,005)		(465)
Loss from continuing operations		(4,434)		(202)
Loss from discontinued operations, net of income tax		(261)		(1,829)
Net (loss) earnings		(4,695)		(2,031)
Less: net earnings - noncontrolling interests		(15)		(45)
Net (loss) earnings attributable to Hill International, Inc.		$ (4,680)		$ (1,986)
Basic (loss) earnings per common share from continuing operations (in dollars per share)		$ (0.08)		$ 0
Basic loss per common share from discontinued operations (in dollars per share)		(0.01)		(0.03)
Basic (loss) earnings per common share - Hill International, Inc. (in dollars per share)		$ (0.09)		$ (0.03)
Basic weighted average common shares outstanding (in shares)		0		0
Diluted earnings (loss) per common share from continuing operations (in dollars per share)		$ (0.08)		$ 0
Diluted earnings (loss) per common share from discontinued operations (in dollars per share)		(0.01)		(0.03)
Diluted (loss) earnings per common share - Hill International, Inc. (in dollars per share)		$ (0.09)		$ (0.03)
Diluted weighted average common shares outstanding (in shares)		0		0

The Company - Consolidated St39

The Company - Consolidated Statement of Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Restatement and Revision of Previously Reported Consolidated Financial Statements
Net earnings	$ (4,239)	$ (11,450)	$ 37,424	$ (5,855)
Foreign currency translation adjustment, net	1,929	(160)	(273)	418
Other, net	0	79	0	135
Comprehensive earnings (loss)	(2,310)	(11,531)	37,151	(5,302)
Comprehensive loss attributable to noncontrolling interest	454	1,914	438	394
Comprehensive earnings (loss) attributable to Hill International, Inc.	$ (2,764)	(13,445)	$ 36,713	(5,696)
As Previously Reported
Restatement and Revision of Previously Reported Consolidated Financial Statements
Net earnings		(6,755)		(3,824)
Foreign currency translation adjustment, net		(1,638)		(1,257)
Other, net		79		135
Comprehensive earnings (loss)		(8,314)		(4,946)
Comprehensive loss attributable to noncontrolling interest		132		(1,223)
Comprehensive earnings (loss) attributable to Hill International, Inc.		(8,446)		(3,723)
Adjustment
Restatement and Revision of Previously Reported Consolidated Financial Statements
Net earnings		(4,695)		(2,031)
Foreign currency translation adjustment, net		1,478		1,675
Other, net		0		0
Comprehensive earnings (loss)		(3,217)		(356)
Comprehensive loss attributable to noncontrolling interest		1,782		1,617
Comprehensive earnings (loss) attributable to Hill International, Inc.		$ (4,999)		$ (1,973)

The Company - Consolidated St40

The Company - Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net (loss) earnings	$ (4,239)	$ (11,450)	$ 37,424	$ (5,855)
Loss from discontinued operations				2,357
Adjustments to reconcile net loss to net cash provided by (used in):				(3,498)
Adjustments to reconcile net earnings to net cash provided by (used in):
Depreciation and amortization			5,011	5,689
Provision for bad debts			2,350	10,827
Amortization of deferred loan fees			789	1,334
Deferred tax provision (benefit)			706	(685)
Stock based compensation			2,671	1,680
Unrealized foreign exchange losses on intercompany balances			407	7,463
Changes in operating assets and liabilities:
Restricted cash			(1,051)	(190)
Accounts receivable			10,490	(3,468)
Accounts receivable - affiliate			(1,243)	(5,778)
Prepaid expenses and other current assets			562	(671)
Income taxes receivable			(566)	(762)
Retainage receivable			9,298	(14,498)
Other assets			(4,305)	6,944
Accounts payable and accrued expenses			(7,888)	(8,822)
Income taxes payable			516	(3,676)
Deferred revenue			(25,061)	7,030
Other current liabilities			2,131	1,604
Retainage payable			(326)	(1,059)
Other liabilities			843	1,435
Net cash (used in) provided by continuing operations			(5,057)	899
Net cash (used in) provided by discontinued operations			(10,217)	72
Net cash (used in) provided by operating activities			(15,274)	971
Cash flows from investing activities:
Payments for purchase of property and equipment			(1,927)	(1,498)
Net cash used in investing activities of continuing operations			(1,990)	(1,498)
Net cash provided by (used in) investing activities of discontinued operations			129,247	(920)
Net cash provided by (used in) investing activities			127,257	(2,418)
Cash flows from financing activities:
Payments on term loans			(75)	(900)
Net (payments) borrowings on revolving loans			(28,885)	8,937
Payments on Philadelphia Industrial Development Corporation loan			(42)	(41)
Deferred Acquisition price payments			0	(1,531)
Dividends paid to noncontrolling interest			(18)	(109)
Proceeds from stock issued under employee stock purchase plan			138	74
Proceeds from exercise of stock options			1,838	219
Net cash (used in) provided by financing activities			(118,576)	6,649
Effect of exchange rate changes on cash			(4,111)	(8,072)
Net decrease in cash and cash equivalents			(10,704)	(2,870)
Cash and cash equivalents — beginning of period			25,637	24,089
Cash and cash equivalents — end of period	$ 14,933	21,219	$ 14,933	21,219
As Previously Reported
Cash flows from operating activities:
Net (loss) earnings		(6,755)		(3,824)
Loss from discontinued operations				0
Adjustments to reconcile net loss to net cash provided by (used in):				(3,824)
Adjustments to reconcile net earnings to net cash provided by (used in):
Depreciation and amortization				7,705
Provision for bad debts				11,879
Amortization of deferred loan fees				1,334
Deferred tax provision (benefit)				663
Stock based compensation				1,838
Unrealized foreign exchange losses on intercompany balances				0
Changes in operating assets and liabilities:
Restricted cash				(69)
Accounts receivable				2,652
Accounts receivable - affiliate				(5,665)
Prepaid expenses and other current assets				(1,001)
Income taxes receivable				(756)
Retainage receivable				(14,583)
Other assets				5,191
Accounts payable and accrued expenses				(8,582)
Income taxes payable				(3,951)
Deferred revenue				124
Other current liabilities				2,639
Retainage payable				(1,308)
Other liabilities				385
Net cash (used in) provided by continuing operations				(5,329)
Net cash (used in) provided by discontinued operations				0
Net cash (used in) provided by operating activities				(5,329)
Cash flows from investing activities:
Payments for purchase of property and equipment				(2,584)
Net cash used in investing activities of continuing operations				(2,584)
Net cash provided by (used in) investing activities of discontinued operations				0
Net cash provided by (used in) investing activities				(2,584)
Cash flows from financing activities:
Payments on term loans				(900)
Net (payments) borrowings on revolving loans				8,950
Payments on Philadelphia Industrial Development Corporation loan				(41)
Deferred Acquisition price payments				(1,531)
Dividends paid to noncontrolling interest				(111)
Proceeds from stock issued under employee stock purchase plan				65
Proceeds from exercise of stock options				220
Net cash (used in) provided by financing activities				6,652
Effect of exchange rate changes on cash				(1,609)
Net decrease in cash and cash equivalents				(2,870)
Cash and cash equivalents — beginning of period				24,089
Cash and cash equivalents — end of period		21,219		21,219
Adjustment
Cash flows from operating activities:
Net (loss) earnings		(4,695)		(2,031)
Loss from discontinued operations				2,357
Adjustments to reconcile net loss to net cash provided by (used in):				326
Adjustments to reconcile net earnings to net cash provided by (used in):
Depreciation and amortization				(2,016)
Provision for bad debts				(1,052)
Amortization of deferred loan fees				0
Deferred tax provision (benefit)				(1,348)
Stock based compensation				(158)
Unrealized foreign exchange losses on intercompany balances				7,463
Changes in operating assets and liabilities:
Restricted cash				(121)
Accounts receivable				(6,120)
Accounts receivable - affiliate				(113)
Prepaid expenses and other current assets				330
Income taxes receivable				(6)
Retainage receivable				85
Other assets				1,753
Accounts payable and accrued expenses				(240)
Income taxes payable				275
Deferred revenue				6,906
Other current liabilities				(1,035)
Retainage payable				249
Other liabilities				1,050
Net cash (used in) provided by continuing operations				6,228
Net cash (used in) provided by discontinued operations				72
Net cash (used in) provided by operating activities				6,300
Cash flows from investing activities:
Payments for purchase of property and equipment				1,086
Net cash used in investing activities of continuing operations				1,086
Net cash provided by (used in) investing activities of discontinued operations				(920)
Net cash provided by (used in) investing activities				166
Cash flows from financing activities:
Payments on term loans				0
Net (payments) borrowings on revolving loans				(13)
Payments on Philadelphia Industrial Development Corporation loan				0
Deferred Acquisition price payments				0
Dividends paid to noncontrolling interest				2
Proceeds from stock issued under employee stock purchase plan				9
Proceeds from exercise of stock options				(1)
Net cash (used in) provided by financing activities				(3)
Effect of exchange rate changes on cash				(6,463)
Net decrease in cash and cash equivalents				0
Cash and cash equivalents — beginning of period				0
Cash and cash equivalents — end of period		$ 0		$ 0

Discontinued Operations and S41

Discontinued Operations and Sale of Business Unit (Details) - USD ($)	May 05, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Apr. 30, 2017	Dec. 31, 2016
Details of assets and liabilities and earnings related to discontinued operations
Pay off and termination of term loan				$ 117,494,000	$ 0
Current assets classified as held for sale
Accounts receivable, net								$ 47,611,000	$ 50,892,000
Prepaid expenses and other current assets								3,153,000	3,064,000
Income taxes receivable								0	695,000
Total current assets classified as held for sale		$ 0		0				50,764,000	54,651,000
Non-current assets classified as held for sale
Property and equipment, net								5,786,000	4,617,000
Acquired intangibles, net								3,289,000	3,397,000
Goodwill								23,454,000	23,461,000
Investments								5,000	6,000
Other assets								2,860,000	610,000
Total non-current assets classified as held for sale		0		0				35,394,000	32,091,000
Current liabilities classified as held for sale
Accounts payable and accrued expenses								15,960,000	21,539,000
Income taxes payable								(17,000)	92,000
Deferred revenue								0	1,562,000
Other current liabilities								15,867,000	2,695,000
Total current liabilities classified as held for sale		0		0				31,810,000	25,888,000
Non-current liabilities classified as held for sale
Deferred income taxes								0	385,000
Deferred revenue								92,000	1,012,000
Retained Earnings								0	457,000
Other liabilities								1,257,000	3,233,000
Total non-current liabilities classified as held for sale		0		0				1,349,000	5,087,000
Net Assets								$ 52,999,000	$ 55,767,000
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues		0	$ 42,203,000	62,149,000	127,909,000
Direct expenses		0	18,872,000	31,339,000	58,919,000
Gross profit		0	23,331,000	30,810,000	68,990,000
Selling, general and administrative expenses		727,000	21,118,000	33,874,000	61,901,000
Operating (loss) profit		(727,000)	2,213,000	(3,064,000)	7,089,000
Interest and related financing fees, net		0	2,762,000	8,858,000	8,293,000
Loss before income taxes		(727,000)	(549,000)	(11,922,000)	(1,204,000)
Pretax gain on the disposal of discontinued operations		0	0	61,443,000	0
Earnings from discontinued operations before income taxes		(727,000)	(549,000)	49,521,000	(1,204,000)
Income tax expense (benefit)		1,917,000	(9,000)	11,522,000	1,153,000
Loss from discontinued operations, net of tax		$ (2,644,000)	$ (540,000)	37,999,000	(2,357,000)
Depreciation and amortization				$ 5,011,000	$ 5,689,000
Disposal group, including discontinued operation, effective tax rate		(263.70%)		23.30%
Construction Claims Group
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Income tax expense (benefit)		$ (1,893,000)
Construction Claims Group | Discontinued operations, Sold
Details of assets and liabilities and earnings related to discontinued operations
Discontinued operation, consideration	$ 140,000,000	129,364,000		$ 129,364,000
Working capital adjustment	8,449,000
Assumed indebtedness	2,187,000
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pretax gain on the disposal of discontinued operations				61,443,000
Depreciation and amortization				0
Cash transferred to buyer							$ 4,041,000
Net proceeds received from Purchaser							$ 125,323,000
Less net assets held for sale		$ 52,999,000		52,999,000
Disposal group adjustments				$ 10,881,000
Indemnification obligations | Construction Claims Group | Discontinued operations, Sold
Details of assets and liabilities and earnings related to discontinued operations
Letters of credit outstanding	$ 3,750,000
Period of escrow for indemnification obligations	12 months
Secured Credit Facilities
Details of assets and liabilities and earnings related to discontinued operations
Payment of accrued interest and certain bank fees	$ 1,214,000
Term loan payable | Secured Credit Facilities
Details of assets and liabilities and earnings related to discontinued operations
Pay off and termination of term loan	117,000,000
U.S. Revolver | Secured Credit Facilities
Details of assets and liabilities and earnings related to discontinued operations
Payments on term loans	25,000,000
International Revolver | Secured Credit Facilities
Details of assets and liabilities and earnings related to discontinued operations
Payments on term loans	8,793,000
Maximum | Construction Claims Group | Discontinued operations, Sold
Details of assets and liabilities and earnings related to discontinued operations
Working capital adjustment	$ 3,203,000
Subsequent event | Construction Claims Group | Discontinued operations, Sold
Details of assets and liabilities and earnings related to discontinued operations
Working capital adjustment						$ 5,079,000
Subsequent event | Minimum | Construction Claims Group | Discontinued operations, Sold
Details of assets and liabilities and earnings related to discontinued operations
Working capital adjustment						$ 1,876,000

Liquidity (Details)

Liquidity (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Liquidity [Line Items]
Cash and cash equivalents	$ 14,933	$ 25,637
U.S. Revolver | Letters of credit
Liquidity [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	16,847
Foreign credit agreements | International Revolver | Revolving credit facility
Liquidity [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	2,100
Foreign credit agreements | Other Foreign Banks | International Revolver | Revolving credit facility
Liquidity [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 9,876

Accounts Receivable - Component

Accounts Receivable - Components of Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Components of accounts receivable
Billed	$ 190,881	$ 200,134
Retainage, current portion	10,950	10,824
Unbilled	21,683	24,968
Accounts receivable, gross	223,514	235,926
Allowance for doubtful accounts	(67,952)	(71,082)
Total	$ 155,562	$ 164,844

Accounts Receivable - General (

Accounts Receivable - General (Details) - MOTC $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Accounts Receivable
Retainage receivable included in non-current retainage receivable	$ 9,778
Retention amount	9,497
Amount of retainage receivable relating to defect and liability period	$ 281
Percentage of retention released after one year from commencement of DLP	50.00%
Period after commencement of DLP for release of retention	1 year
Maximum period of DLP	24 months

Intangible Assets - Acquired (D

Intangible Assets - Acquired (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Summary of acquired intangible assets
Gross Carrying Amount	$ 20,474	$ 19,716
Accumulated Amortization	15,918	13,710
Intangible assets, net	4,556	6,006
Client relationship
Summary of acquired intangible assets
Gross Carrying Amount	17,534	16,699
Accumulated Amortization	13,420	11,298
Contract
Summary of acquired intangible assets
Gross Carrying Amount	2,043	2,058
Accumulated Amortization	2,007	1,912
Trade name
Summary of acquired intangible assets
Gross Carrying Amount	897	959
Accumulated Amortization	$ 491	$ 500

Intangible Assets - Amortizatio

Intangible Assets - Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense related to intangible assets	$ 493	$ 286	$ 1,556	$ 2,279
Estimated amortization expense of intangible assets for the next five years
2017 (remaining 3 months)	485		485
2,018	1,088		1,088
2,019	990		990
2,020	728		728
2,021	$ 338		$ 338

Goodwill (Details)

Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)
Summary of changes in carrying value of goodwill during 2017
Balance, December 31, 2016	$ 50,665
Translation adjustments	2,376
Balance, September 30, 2017	$ 53,041

Accounts Payable and Accrued 48

Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Components of accounts payable and accrued expenses
Accounts payable	$ 29,002	$ 30,944
Accrued payroll and related expenses	34,006	32,618
Accrued subcontractor fees	11,112	9,188
Accrued agency fees	2,075	5,702
Accrued legal and professional fees	1,549	2,223
Other accrued expenses	4,973	5,005
Accounts payable and accrued expenses, net	$ 82,717	$ 85,680

Notes Payable and Long-Term D49

Notes Payable and Long-Term Debt - Summary of Outstanding Debt Obligations (Details) € in Thousands, $ in Thousands	Sep. 30, 2017USD ($)	May 05, 2017USD ($)	May 05, 2017EUR (€)	Dec. 31, 2016USD ($)
Summary of outstanding debt obligations
Unamortized discount and deferred financing costs	$ 157			$ 1,778
Long-term debt, total	34,138			144,103
Less current maturities	2,695			1,983
Notes payable and long-term debt, net of current maturities	31,443			142,120
Term loan payable | Philadelphia Industrial Development Corporation
Summary of outstanding debt obligations
Long-term debt, total	613			655
Revolving credit facility | Consortium of banks in Spain
Summary of outstanding debt obligations
Long-term debt, total	2,747			2,962
Revolving credit facility | National Bank of Abu Dhabi
Summary of outstanding debt obligations
Long-term debt, total	1,779			0
2014 Term Loan Facility | Term loan payable
Summary of outstanding debt obligations
Unamortized discount and deferred financing costs	4,416
Long-term debt, total	0	$ 117,000		112,884
2017 Term Loan Facility | Term loan payable
Summary of outstanding debt obligations
Unamortized discount and deferred financing costs	926
Long-term debt, total	28,999			0
Secured Credit Facilities | U.S. Revolver
Summary of outstanding debt obligations
Long-term debt, total	0	25,000		16,500
Secured Credit Facilities | International Revolver
Summary of outstanding debt obligations
Long-term debt, total	$ 0	$ 8,793	€ 8,300	$ 11,102

Notes Payable and Long-Term D50

Notes Payable and Long-Term Debt - Term Loan Facilities and Revolving Credit Facilities (Details) € in Thousands	Jun. 21, 2017USD ($)	May 05, 2017USD ($)	Jun. 30, 2017USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2017EUR (€)	May 05, 2017EUR (€)	Dec. 31, 2016USD ($)
Notes Payable and Long-Term Debt
Long-term Debt				$ 34,138,000			$ 144,103,000
Term loan payable
Notes Payable and Long-Term Debt
Aggregate principal amount				30,000,000
Mandatory prepayment percentage of the excess cash flow for each fiscal year with the first full fiscal year upon the achievement and maintenance of certain metrics	50.00%
Mandatory prepayment percentage of the excess cash flow for each fiscal year with the first full fiscal year upon the achievement net leverage ration is equal to or less than 2.25	25.00%
Consolidated net leverage limit for mandatory prepayment percentage of 25%	2
Term of debt	6 years
Quarterly principal payment, percentage	1.00%
Deferred financing fees	$ 874,000
Unamortized balances of expenses and fees				$ 926,000
Effective interest rate (as a percent)				6.985%
Prepayment premium	1.00%
Discount on principal	1.00%
Discount on principal amount	$ 300,000
Term loan payable | British Bankers Association LIBOR Rate
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)	5.75%
Term loan payable | British Bankers Association LIBOR Rate | Minimum
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)	1.00%
Interest rate (as a percent)	1.00%
Term loan payable | One Month LIBOR
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)	1.00%
Term loan payable | Base Rate
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)	4.75%
Term loan payable | Federal Funds Rate
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)	0.50%
Revolving credit facility
Notes Payable and Long-Term Debt
Term of debt		5 years
Deferred financing fees		$ 3,000,000
Revolving credit facility | Other Assets
Notes Payable and Long-Term Debt
Unamortized balances of expenses and fees				$ 2,502,000			1,650,000
Secured Credit Facilities
Notes Payable and Long-Term Debt
Debt covenant leverage ratio limit		3
Debt instrument increase in applicable interest rate for past due account receivable limit exceeded	2.00%
Increase in applicable interest rate upon default (as a percent)		2.00%
Secured Credit Facilities | Loss From discontinued operations
Notes Payable and Long-Term Debt
Write-off of deferred financing costs			$ 325,000
2014 Term Loan Facility | Loss From discontinued operations
Notes Payable and Long-Term Debt
Write-off of deferred financing costs			4,024,000
Term loan payable | 2014 Term Loan Facility
Notes Payable and Long-Term Debt
Long-term Debt		$ 117,000,000		$ 0			112,884,000
Revolving credit facility | Secured Credit Facilities
Notes Payable and Long-Term Debt
Deferred fees			325,000
Cash drawn on credit facility		$ 25,191,000
Term of debt		5 years
Letters of credit outstanding		$ 9,193,000
Consolidated net leverage ratio		3
U.S. Revolver
Notes Payable and Long-Term Debt
Effective interest rate (as a percent)				7.00%
U.S. Revolver | Letters of credit
Notes Payable and Long-Term Debt
Maximum borrowing capacity		$ 25,000,000
U.S. Revolver | British Bankers Association LIBOR Rate
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)		3.75%
U.S. Revolver | Base Rate
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)		2.75%
U.S. Revolver | Letters of credit
Notes Payable and Long-Term Debt
Maximum borrowing capacity		$ 20,000,000
Amounts outstanding				$ 8,153,000
Available borrowing capacity				16,847,000
U.S. Revolver | Revolving credit facility
Notes Payable and Long-Term Debt
Aggregate principal amount				25,000,000
Unused facility commitment fees percentage		0.50%
U.S. Revolver | Secured Credit Facilities
Notes Payable and Long-Term Debt
Long-term Debt		$ 25,000,000		$ 0			16,500,000
U.S. Revolver | Secured Credit Facilities | Letters of credit
Notes Payable and Long-Term Debt
Maximum borrowing capacity		20,000,000
Deferred fees		1,739,000
International Revolver
Notes Payable and Long-Term Debt
Maximum borrowing capacity		10,000,000
International Revolver | EURIBOR
Notes Payable and Long-Term Debt
Basis of effective interest rate (as a percent)				4.50%
International Revolver | Letters of credit
Notes Payable and Long-Term Debt
Maximum borrowing capacity		8,000,000	$ 9,130,000	$ 9,452,000
International Revolver | Revolving credit facility
Notes Payable and Long-Term Debt
Maximum borrowing capacity		$ 10,000,000		10,818,000	€ 9,156
Unused facility commitment fees percentage		0.75%
Percentage of eligible receivables that are subject to a perfected security interest which are used in calculation of borrowing base		85.00%
Percentage of eligible receivables that are not subject to a perfected security interest which are used in calculation of borrowing base		10.00%
International Revolver | Revolving credit facility | Foreign credit agreements
Notes Payable and Long-Term Debt
Available borrowing capacity				2,100,000
International Revolver | Secured Credit Facilities
Notes Payable and Long-Term Debt
Long-term Debt		$ 8,793,000		0		€ 8,300	11,102,000
International Revolver | Secured Credit Facilities | Letters of credit
Notes Payable and Long-Term Debt
Maximum borrowing capacity		$ 8,000,000
Other Foreign Banks
Notes Payable and Long-Term Debt
Maximum borrowing capacity							84,087,000
Letters of credit outstanding							$ 34,824,000
Other Foreign Banks | International Revolver | Revolving credit facility | Foreign credit agreements
Notes Payable and Long-Term Debt
Amounts outstanding				942,000
Available borrowing capacity				$ 9,876,000

Notes Payable and Long-Term D51

Notes Payable and Long-Term Debt - Other Debt Arrangements (Details) R$ in Thousands	Jun. 21, 2017USD ($)	May 05, 2017USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)loanfacilityitem	Dec. 31, 2016BRL (R$)	Dec. 31, 2016EUR (€)	Dec. 31, 2016AED (د.إ)	Dec. 17, 2016EUR (€)
Other Foreign Banks
Description of terms of credit agreement
Maximum borrowing capacity				$ 84,087,000
Letters of credit outstanding				34,824,000
Letters of credit | National Bank of Abu Dhabi
Description of terms of credit agreement
Maximum borrowing capacity				54,431,000			د.إ 200,000,000
Letters of credit outstanding				26,448,000			د.إ 97,182,000
Term loan payable
Description of terms of credit agreement
Aggregate principal amount			$ 30,000,000
Term of debt	6 years
Unamortized balances of expenses and fees			$ 926,000
Effective interest rate (as a percent)			6.985%
Quarterly principal payment, percentage	1.00%
Discount on principal	1.00%
Discount on principal amount	$ 300,000
Deferred financing fees	$ 874,000
Term loan payable | Philadelphia Industrial Development Corporation
Description of terms of credit agreement
Aggregate principal amount				$ 750,000
Interest rate (as a percent)				2.75%	2.75%	2.75%	2.75%
Term of debt				144 months
Amount payable in each installment				$ 6,000
Revolving credit facility
Description of terms of credit agreement
Term of debt		5 years
Deferred financing fees		$ 3,000,000
Revolving credit facility | National Bank of Abu Dhabi
Description of terms of credit agreement
Maximum borrowing capacity				3,130,000			د.إ 11,500,000
Amounts outstanding				$ 1,779,000			د.إ 6,538,000
Revolving credit facility | National Bank of Abu Dhabi | Emirates InterBank Offer Rate
Description of terms of credit agreement
Basis of effective interest rate (as a percent)				3.50%
Effective interest rate (as a percent)				5.50%
Revolving credit facility | National Bank of Abu Dhabi | Emirates InterBank Offer Rate | Minimum
Description of terms of credit agreement
Interest rate (as a percent)				5.50%	5.50%	5.50%	5.50%
Revolving credit facility | Engineering S.A.
Description of terms of credit agreement
Number of revolving credit lines maintained by Engineering S.A. | item				4
Number of banks involved in revolving credit facility | loanfacility				2
Maximum borrowing capacity				$ 752,000
Amounts outstanding				$ 0	R$ 2380
Weighted average interest rate (as a percent)				4.76%	4.76%	4.76%	4.76%
Period of automatic renewal				3 months
Revolving credit facility | Hill Spain | Consortium of banks in Spain
Description of terms of credit agreement
Interest rate (as a percent)				6.50%	6.50%	6.50%	6.50%
Number of banks involved in revolving credit facility | item				3
Maximum borrowing capacity				$ 3,273,000		€ 2,770,000		€ 5,640,000
Revolving credit facility | Hill Spain | Consortium of banks in Spain | Minimum
Description of terms of credit agreement
Interest rate (as a percent)				1.85%	1.85%	1.85%	1.85%
Term of debt				36 months
Revolving credit facility | Hill Spain | Consortium of banks in Spain | Maximum
Description of terms of credit agreement
Interest rate (as a percent)				3.50%	3.50%	3.50%	3.50%
Term of debt				60 months

Supplemental Cash Flow Inform52

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Summary of additional cash flow information
Interest and related financing fees paid	$ 5,831	$ 8,915
Income taxes paid	7,713	9,435
Increase in Other Current Liabilities and Decrease in APIC Related to ESA Put Options	(777)	2,670
Increase in APIC from the Issuance of Shares of Common Stock from Cashless Exercise of Stock Options	$ 0	$ 729

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) shares in Thousands, $ in Thousands	May 10, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of options granted (in dollars)				$ 1,400
Total number of shares excluded from diluted earnings per common share		1,541	6,480	2,079	6,478
Employee Stock Option | Interim Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of options granted (in dollars)	$ 80
Options granted (in shares)		50		81

Share-Based Compensation (Detai

Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	May 10, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of options granted (in dollars)				$ 1,400
Average expected life				5 years
Volatility (as a percent)				48.30%
Weighted average risk-free interest rate (as a percent)				2.08%
Compensation expense		$ 1,048	$ 581	$ 2,261	$ 1,838
Exercise price of $3.96
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)		5,526,707		5,526,707
Weighted average exercise price of outstanding options (in dollars per share)		$ 4.23		$ 4.23
Exercise price of $
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price of options granted (in dollars per share)				$ 4.98
Weighted-average contractual life				7 years
Weighted average exercise price of $5.55
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options lapsed (in shares)				1,541,064
Weighted average exercise price of options lapsed (in dollars per share)				$ 5.41
Weighted average exercise price of $4.40
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options forfeited (in shares)				221,585
Weighted average exercise price of options forfeited (in dollars per share)				$ 4.41
2008 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased (in shares)		5,336		36,007
Aggregate purchase price		$ 24		$ 138
Employee Stock Option | Interim Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)		50,000		81,000
Aggregate fair value of options granted (in dollars)	$ 80
Compensation expense		$ 221		$ 386
Options vesting over a five-year period | Exercise price of $
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)				715,853
Award vesting period				5 years

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Increase (decrease) in stockholders' equity
Stockholders’ equity, December 31, 2016			$ 76,352
Net earnings (loss)	$ (4,239)	$ (11,450)	37,424	$ (5,855)
Other comprehensive earnings			(273)
Comprehensive (loss) earnings			37,151
Additional paid in capital			5,537
Stockholders’ equity, September 30, 2017	119,040		119,040
Non-controlling Interests
Increase (decrease) in stockholders' equity
Stockholders’ equity, December 31, 2016			1,994
Net earnings (loss)			175
Other comprehensive earnings			263
Comprehensive (loss) earnings			438
Additional paid in capital			0
Stockholders’ equity, September 30, 2017	2,432		2,432
Hill International, Inc. Stockholders
Increase (decrease) in stockholders' equity
Stockholders’ equity, December 31, 2016			74,358
Net earnings (loss)			37,249
Other comprehensive earnings			(536)
Comprehensive (loss) earnings			36,713
Additional paid in capital			5,537
Stockholders’ equity, September 30, 2017	$ 116,608		$ 116,608

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Contingency [Line Items]
Effective income tax rate (as a percent)	40.10%	(27.00%)	39.00%	272.70%
Components of (loss) earnings before income taxes
(Loss) earnings before income taxes	$ (2,663)	$ (8,592)	$ (943)	$ 2,025
Income tax (benefit) expense, net	(1,068)	2,318	(368)	5,523
Other liabilities
Components of (loss) earnings before income taxes
Reserve for uncertain tax positions	2,319		2,319		$ 6,735
U.S.
Components of (loss) earnings before income taxes
(Loss) earnings before income taxes	(4,505)	(8,050)	(8,613)	(21,512)
Income tax (benefit) expense, net	(1,892)	0	(3,618)	0
Foreign
Components of (loss) earnings before income taxes
(Loss) earnings before income taxes	1,842	(542)	7,670	23,537
Income tax (benefit) expense, net	$ 824	$ 2,318	$ 3,250	$ 5,523

Segment and Related Informati57

Segment and Related Information - Revenue by Geographic Region (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segment	Sep. 30, 2016USD ($)
Consulting Fee Revenue and Total Revenue by Geographic Region:
Number of reporting units | segment			1
Revenues	$ 123,192	$ 121,222	$ 364,748	$ 390,830
Revenues (as a percent)	100.00%	100.00%	100.00%	100.00%
U.S./Canada
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 59,640	$ 50,675	$ 169,229	$ 148,194
Revenues (as a percent)	48.40%	41.80%	46.40%	37.80%
Latin America
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 2,889	$ 4,759	$ 9,189	$ 15,154
Revenues (as a percent)	2.30%	3.90%	2.50%	3.90%
Europe
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 10,811	$ 10,198	$ 30,931	$ 29,926
Revenues (as a percent)	8.80%	8.40%	8.50%	7.70%
Middle East
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 42,248	$ 45,580	$ 131,211	$ 166,887
Revenues (as a percent)	34.30%	37.60%	36.00%	42.70%
Africa
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 6,034	$ 5,946	$ 17,651	$ 18,659
Revenues (as a percent)	4.90%	4.90%	4.80%	4.80%
Asia/Pacific
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 1,570	$ 4,064	$ 6,537	$ 12,010
Revenues (as a percent)	1.30%	3.40%	1.80%	3.10%
United Arab Emirates
Consulting Fee Revenue and Total Revenue by Geographic Region:
Revenues	$ 17,431		$ 64,221
Percentage of Revenue	14.40%		16.40%

Segment and Related Informati58

Segment and Related Information - Operating Profit (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Operating Profit (Loss)
Operating profit (loss)	$ (1,628)	$ (7,986)	$ 1,123	$ 3,835
Operating segment | U.S.
Operating Profit (Loss)
Operating profit (loss)	6,350	5,562	17,730	13,710
Operating segment | Latin America
Operating Profit (Loss)
Operating profit (loss)	88	(668)	(2,431)	1,520
Operating segment | Europe
Operating Profit (Loss)
Operating profit (loss)	(57)	409	3,763	(818)
Operating segment | Middle East
Operating Profit (Loss)
Operating profit (loss)	4,042	(3,296)	15,402	15,326
Operating segment | Africa
Operating Profit (Loss)
Operating profit (loss)	180	232	(533)	(878)
Operating segment | Asia/Pacific
Operating Profit (Loss)
Operating profit (loss)	(658)	94	(1,106)	909
Corporate
Operating Profit (Loss)
Operating profit (loss)	$ (11,573)	$ (10,319)	$ (31,702)	$ (25,934)

Segment and Related Informati59

Segment and Related Information - Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Depreciation and Amortization Expense
Depreciation and amortization expense	$ 1,756	$ 1,480	$ 5,011	$ 5,689
Operating segment | Project Management
Depreciation and Amortization Expense
Depreciation and amortization expense	1,422	1,263	4,397	5,237
Corporate
Depreciation and Amortization Expense
Depreciation and amortization expense	$ 334	$ 217	$ 614	$ 452

Segment and Related Informati60

Segment and Related Information - Revenue by Client Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consulting Fee Revenue and Total Revenue By Client Type:
Revenues	$ 123,192	$ 121,222	$ 364,748	$ 390,830
Revenues (as a percent)	100.00%	100.00%	100.00%	100.00%
U.S. federal government
Consulting Fee Revenue and Total Revenue By Client Type:
Revenues	$ 3,729	$ 3,055	$ 10,965	$ 8,716
Revenues (as a percent)	3.00%	2.50%	3.00%	2.20%
U.S. state, regional and local governments
Consulting Fee Revenue and Total Revenue By Client Type:
Revenues	$ 43,177	$ 40,182	$ 119,132	$ 113,302
Revenues (as a percent)	35.00%	33.10%	32.70%	29.00%
Foreign governments
Consulting Fee Revenue and Total Revenue By Client Type:
Revenues	$ 33,524	$ 34,000	$ 105,546	$ 129,045
Revenues (as a percent)	27.20%	28.00%	28.90%	33.00%
Private sector
Consulting Fee Revenue and Total Revenue By Client Type:
Revenues	$ 42,762	$ 43,985	$ 129,105	$ 139,767
Revenues (as a percent)	34.80%	36.40%	35.40%	35.80%

Segment and Related Informati61

Segment and Related Information - Property, Plant and Equipment, Net by Geographic Location (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	$ 13,940	$ 16,389
U.S./Canada
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	10,983	12,626
Latin America
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	598	881
Europe
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	882	218
Middle East
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	1,250	1,645
North Africa
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	113	169
Asia/Pacific
Property, Plant and Equipment, Net by Geographic Location:
Property, plant and equipment, net	$ 114	$ 850

Commitments and Contingencies -

Commitments and Contingencies - General Litigation and Acquisition-Related Contingencies (Details) R$ in Thousands, $ in Thousands	Oct. 05, 2015USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2013USD ($)	Jun. 17, 2016BRL (R$)
ESA
Acquisition-Related Contingencies
Value of shares purchased on exercise of Put Options		$ 2,734			R$ 8656
M.A. Angeliades, Inc. 2013 Complaint
Acquisition-Related Contingencies
Possible loss contingency				$ 8,771
Settlement amount	$ 2,596
Interest amount	1,056
Interest accrued	$ 448
Interest amount charged to expense			$ 608
Hill Spain | ESA
Acquisition-Related Contingencies
Ownership interest		91.00%
Multiple of earnings for determining purchase price of minority shares		7
Call option purchase price premium if exercised by Hill Spain (as a percent)		5.00%
Call/put option exercise period after audited financial statements		3 months

Commitments and Contingencies-

Commitments and Contingencies- Other (Details) $ in Thousands	Jul. 13, 2015USD ($)employee	Sep. 30, 2017USD ($)	Dec. 31, 2016USD ($)
Grant received	$ 1,000
Minimum capital expenditure required to be made to receive grant	$ 6,425
Minimum term of lease	7 years
Minimum persons to be employed | employee	359
Term of lease	12 years
Tenant improvement allowance from landlord		$ 3,894
Amortization period for tenant improvements		12 years
Other liabilities
Potential tax liability related to certain foreign subsidiaries		$ 2,132
Tenant improvement allowance from landlord			$ 3,894
Amortization period for tenant improvements			12 years
Other liabilities | Discontinued Operations
Potential tax liability related to certain foreign subsidiaries		$ 444

Subsequent Events - Finalizatio

Subsequent Events - Finalization of ESA purchase (Details) - Subsequent event - ESA R$ in Thousands, $ in Thousands	1 Months Ended				12 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2018BRL (R$)	Feb. 28, 2018USD ($)	Feb. 28, 2018BRL (R$)	Dec. 31, 2017USD ($)	Dec. 31, 2017BRL (R$)
Acquisitions
Reduced total payment to acquire business			$ 1,922	R$ 6084
Adjustment to additional paid-in capital	$ 953	R$ 3146			$ 1,365	R$ 4475

Subsequent Events - Performance

Subsequent Events - Performance Guarantee (Details) $ in Thousands	Feb. 08, 2018USD ($)
Subsequent event | Forecast
Subsequent events
Amount of performance guaranteed	$ 7,927