Hill International (HIL) 10-Q 3 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document and Entity Information	'	'
Entity Registrant Name	'Hill International, Inc.	'
Entity Central Index Key	'0001287808	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	50,373,257
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$28,525	$30,381
Cash - restricted	6,677	15,766
Accounts receivable, less allowance for doubtful accounts of $7,664 and $9,530	251,084	232,011
Accounts receivable - affiliate	2,140	492
Prepaid expenses and other current assets	11,336	13,078
Income taxes receivable	4,264	4,460
Deferred income tax assets	1,736	1,705
Total current assets	305,762	297,893
Property and equipment, net	11,061	10,613
Cash - restricted, net of current portion	9,454	2,740
Retainage receivable	2,344	1,212
Acquired intangibles, net	19,504	24,964
Goodwill	83,072	85,853
Investments	5,566	5,984
Deferred income tax assets	13,736	13,882
Other assets	15,472	5,961
Total assets	465,971	449,102
Liabilities and Stockholders' Equity	'	'
Due to bank	'	2
Current maturities of notes payable	2,580	18,974
Accounts payable and accrued expenses	93,626	92,270
Income taxes payable	7,758	9,442
Deferred revenue	15,506	18,203
Deferred income taxes	312	369
Other current liabilities	12,964	12,255
Total current liabilities	132,746	151,515
Notes payable, net of current maturities	125,291	114,285
Retainage payable	2,190	1,017
Deferred income taxes	15,071	16,732
Deferred revenue	13,846	16,261
Other liabilities	2,700	6,261
Total liabilities	291,844	306,071
Commitments and contingencies	'	'
Stockholders' equity:	'	'
Preferred stock, $0.0001 par value; 1,000 shares authorized, none issued	'	'
Common stock, $0.0001 par value; 100,000 shares authorized, 56,905 and 46,598 shares issued at September 30, 2014 and December 31, 2013, respectively	6	5
Additional paid-in capital	179,127	136,899
Retained earnings	39,643	47,038
Accumulated other comprehensive loss	-25,737	-25,032
Shareholders' equity before treasury stocks and noncontrolling interest	193,039	158,910
Less treasury stock of 6,546 shares and 6,434 shares at September 30, 2014 and December 31, 2013, respectively, at cost	-28,304	-27,766
Hill International, Inc. share of equity	164,735	131,144
Noncontrolling interests	9,392	11,887
Total equity	174,127	143,031
Total liabilities and stockholders' equity	$465,971	$449,102

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
CONSOLIDATED BALANCE SHEETS	'	'
Accounts receivable, allowance for doubtful accounts (in dollars)	$7,664	$9,530
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	56,905	46,598
Treasury stock, shares	6,546	6,434

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS	'	'	'	'
Consulting fee revenue	$145,324	$130,181	$427,088	$381,164
Reimbursable expenses	16,167	17,013	44,055	50,567
Total revenue	161,491	147,194	471,143	431,731
Cost of services	82,675	75,734	244,511	223,789
Reimbursable expenses	16,167	17,013	44,055	50,567
Total direct expenses	98,842	92,747	288,566	274,356
Gross profit	62,649	54,447	182,577	157,375
Selling, general and administrative expenses	51,352	46,195	156,625	131,884
Operating profit	11,297	8,252	25,952	25,491
Interest expense and related financing fees, net	16,112	5,489	26,834	17,257
(Loss) earnings before income taxes	-4,815	2,763	-882	8,234
Income tax expense (benefit)	3,800	-179	5,424	3,983
Net (loss) earnings	-8,615	2,942	-6,306	4,251
Less: net earnings - noncontrolling interests	351	386	1,089	1,356
Net (loss) earnings attributable to Hill International, Inc.	($8,966)	$2,556	($7,395)	$2,895
Basic (loss) earnings per common share - Hill International, Inc. (in dollars per share)	($0.19)	$0.06	($0.17)	$0.07
Basic weighted average common shares outstanding (in shares)	46,606	39,351	42,348	38,949
Diluted (loss) earnings per common share - Hill International, Inc. (in dollars per share)	($0.19)	$0.06	($0.17)	$0.07
Diluted weighted average common shares outstanding (in shares)	46,606	39,494	42,348	39,135

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (LOSS) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (LOSS)	'	'	'	'
Consolidated net (loss) earnings	($8,615)	$2,942	($6,306)	$4,251
Foreign currency translation adjustment, net of tax	-4,200	-1,063	-1,651	-6,228
Other, net	-238	7	184	115
Comprehensive (loss) earnings	-13,053	1,886	-7,773	-1,862
Comprehensive (loss) earnings attributable to noncontrolling interests	-598	-139	327	-451
Comprehensive (loss) earnings attributable to Hill International, Inc.	($12,455)	$2,025	($8,100)	($1,411)

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Consolidated net (loss) earnings	($6,306)	$4,251
Adjustments to reconcile net (loss) earnings to net cash (used in) provided by operating activities:	'	'
Depreciation and amortization	7,276	7,921
Provision for bad debts	1,501	2,743
Interest accretion on term loan	15,526	5,875
Deferred tax (benefit) expense	-2,316	1,035
Share based compensation	2,712	2,257
Changes in operating assets and liabilities, net of acquisition in 2013	'	'
Restricted cash	3,716	986
Accounts receivable	-9,148	-21,594
Accounts receivable - affiliate	-1,648	16
Prepaid expenses and other current assets	2,381	-4,184
Income taxes receivable	589	-608
Retainage receivable	-1,132	-184
Other assets	1,065	345
Accounts payable and accrued expenses	-5,207	1,179
Income taxes payable	-2,603	-2,475
Deferred revenue	-7,610	12,177
Other current liabilities	-2,711	3,154
Retainage payable	1,166	9
Other liabilities	-3,599	-4,018
Net cash (used) in provided by operating activities	-6,348	8,885
Cash flows from investing activities:	'	'
Payments for purchase of property and equipment	-2,393	-2,144
Cash received from acquisition	'	727
Contribution to affiliate	'	-8
Payment of liability for additional interest in Hill Spain	'	-9,325
Net cash used in investing activities	-2,393	-10,750
Cash flows from financing activities:	'	'
Due to bank	-2	-21
Proceeds from secondary public offering of common stock	38,078	'
Proceeds from new term loan	120,000	'
Payoff and termination of term loan	-100,000	'
Payoff and termination of revolving credit facility	-25,500	'
Payment of financing fees	-9,484	'
Payments on Engineering S.A. note payable	'	-5,095
Payments on notes payable	'	-148
Net (payments) borrowings on revolving loans	-14,793	22,279
Dividends paid to noncontrolling interest	-173	'
Proceeds from stock issued under employee stock purchase plan	158	53
Proceeds from exercise of stock options	1,032	20
Net cash provided by financing activities	9,316	17,088
Effect of exchange rate changes on cash	-2,431	-5,300
Net (decrease) increase in cash and cash equivalents	-1,856	9,923
Cash and cash equivalents - beginning of period	30,381	16,716
Cash and cash equivalents - end of period	$28,525	$26,639

The_Company

The Company	9 Months Ended
	Sep. 30, 2014
The Company	'
The Company	'
	Note 1 - The Company
	Hill International, Inc. (“Hill” or the “Company”) is a professional services firm that provides program management, project management, construction management, construction claims 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.  The Company is organized into two key operating divisions: the Project Management Group and the Construction Claims Group.

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Basis of Presentation	'
Basis of Presentation	'
	Note 2 — 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 for the year ended December 31, 2013.  Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States (“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 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.

Accounts_Receivable

Accounts Receivable	9 Months Ended
	Sep. 30, 2014
Accounts Receivable.	'
Accounts Receivable	'
	Note 3 — Accounts Receivable
	The components of accounts receivable are as follows (in thousands):
		September 30, 2014			December 31, 2013
	Billed	$	206,556		$	206,469
	Retainage, current portion	13,806			10,215
	Unbilled	38,386			24,857
		258,748			241,541
	Allowance for doubtful accounts	(7,664		)	(9,530		)
		$	251,084		$	232,011
	In early 2014, the Company received additional payments against accounts receivable related to work performed by Hill prior to March 2011 pursuant to contracts with the Libyan government of approximately $6,800,000 consisting of approximately 200,000 pounds sterling ($300,000), approximately LYD 2,100,000 ($1,700,000) and $4,800,000 in U.S. dollars. Total receipts since 2011 amounted to approximately $9,900,000 and, at September 30, 2014, the remaining accounts receivable outstanding related to Hill’s work in Libya amounted to approximately $50,100,000.
	Currently, the Company is seeking to recover the receivable from its client, the Libyan Organization for the Development of Administrative Centres (“ODAC”), through ongoing negotiations rather than pursuing its legal rights for payment under the contracts. The Company continues to believe that this course of action provides the best likelihood for recovery as it could result in completion of and payment on the existing contracts as well as the potential for the award of new contracts.  There is at present no formal agreement, understanding or timetable for further payments of Hill’s accounts receivable from ODAC or a return to work on Hill’s existing contracts.  Management believes that the recent payments made in 2013 and 2014 were made in good faith and are a positive indication that ODAC intends to satisfy its obligations to Hill.  However, the Company cannot predict with certainty when the remaining accounts receivable will be paid by the Libyan authorities or when work will resume there.  Accordingly, the Company believes that recovery of its receivable from ODAC through continued negotiation, rather than legal action, remains appropriate.  In the event that continued negotiations with ODAC are determined to be unsuccessful, the Company will value its legal claims and adjust the carrying amount of this receivable, which could have a significant adverse impact on its consolidated results of operations and consolidated financial position.

Intangible_Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2014
Intangible Assets	'
Intangible Assets	'
	Note 4 — Intangible Assets
	The following table summarizes the Company’s acquired intangible assets (in thousands):
			September 30, 2014						December 31, 2013
			Gross						Gross
			Carrying			Accumulated			Carrying			Accumulated
			Amount			Amortization			Amount			Amortization
	Client relationships		$	36,133		$	20,632		$	37,501		$	18,238
	Acquired contract rights		11,392			9,404			11,874			8,541
	Trade names		3,056			1,041			3,266			898
	Total		$	50,581		$	31,077		$	52,641		$	27,677
	Intangible assets, net		$	19,504					$	24,964
	Amortization expense related to intangible assets was as follows (in thousands):
	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
	$	1,518		$	1,723		$	4,650		$	4,957
	The following table presents the estimated amortization expense based on our present intangible assets for the next five years (in thousands):
			Estimated
			Amortization
	Year Ending December 31,		Expense
	2014 (remaining 3 months)		$	1,460
	2015		5,190
	2016		3,938
	2017		2,970
	2018		1,973

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2014
Goodwill	'
Goodwill	'
	Note 5 — Goodwill
	The Company performs its annual goodwill impairment testing, by reporting unit, in the third quarter, or more frequently if events or changes in circumstances indicate that goodwill may be impaired. Application of the goodwill impairment test requires significant judgments including estimation of future cash flows, which is dependent on internal forecasts, estimation of the long-term rate of growth for the businesses, the useful life over which cash flows will occur, and determination of the Company’s weighted average cost of capital. Changes in these estimates and assumptions could materially affect the determination of fair value and/or conclusions on goodwill impairment for each reporting unit. The Company performed its annual impairment test effective July 1, 2014. Based on a preliminary valuation, the fair value of the Project Management unit and the Construction Claims unit exceeded their carrying values by $227,700,000 and $70,800,000, respectively.
	The following table summarizes the changes in the Company’s carrying value of goodwill during the nine months of 2014 (in thousands):
		Project			Construction
		Management			Claims			Total
	Balance, December 31, 2013	$	58,448		$	27,405		$	85,853
	Additions	—			—			—
	Translation adjustments	(2,317		)	(464		)	(2,781		)
	Balance, September 30, 2014	$	56,131		$	26,941		$	83,072

Accounts_Payable_and_Accrued_E

Accounts Payable and Accrued Expenses	9 Months Ended
	Sep. 30, 2014
Accounts Payable and Accrued Expenses	'
Accounts Payable and Accrued Expenses	'
	Note 6 — Accounts Payable and Accrued Expenses
	Below are the components of accounts payable and accrued expenses (in thousands):
		September 30, 2014		December 31, 2013
	Accounts payable	$	23,816	$	25,349
	Accrued payroll	41,892		35,732
	Accrued subcontractor fees	4,526		6,212
	Accrued agency fees	16,055		17,623
	Accrued legal and professional fees	608		1,239
	Other accrued expenses	6,728		6,115
		$	93,626	$	92,270

Notes_Payable_and_LongTerm_Deb

Notes Payable and Long-Term Debt	9 Months Ended
	Sep. 30, 2014
Notes Payable and Long-Term Debt	'
Notes Payable and Long-Term Debt	'
	Note 7 — Notes Payable and Long-Term Debt
	Outstanding debt obligations are as follows (in thousands):
			September 30, 2014		December 31, 2013
	2014 Term Loan Facility		$	120,000	$	—
	2012 Term Loan Payable		—		84,474
	2009 Revolving Credit loan payable under the Credit Agreement(the weighted average interest rate of all borrowings was 5.32% at December 31, 2013)		—		39,000
	Borrowings under revolving credit facilities with a consortium of banks in Spain		6,976		7,670
	Borrowings under unsecured credit facility with Caja Badajoz		888		2,047
	Borrowings under revolving credit facility with the National Bank of Abu Dhabi		7		—
	Other notes payable		—		68
			127,871		133,259
	Less current maturities		2,580		18,974
	Notes payable and long-term debt, net of current maturities		$	125,291	$	114,285
	Refinancing
	On June 12, 2014, the Company and its subsidiary Hill International N.V. (the “Subsidiary”) entered into a Commitment Letter with Société Générale (the “Agent”) and SG Americas Securities, LLC, (the “Arranger”) pursuant to which the Arranger and the Agent committed, subject to the conditions and other terms and provisions of the Commitment Letter, to provide secured debt facilities to the Company in an aggregate principal amount of $165,000,000 which would be used to payoff and terminate the Company’s previous senior credit facility with a bank group led by Bank of America, N.A. and a previous second lien term loan with funds managed by Tennenbaum Capital Partners, LLC.
	Effective as of September 26, 2014 (the “Closing Date”), the Company, entered into (i) a credit agreement with the Agent as administrative agent and collateral agent, TD Bank, N.A., as syndication agent and HSBC Bank USA, N.A., as documentation agent, (collectively, the “U.S. Lenders”) consisting of (A) a term loan facility of $120,000,000 (the “Term Loan Facility”) and (B) a $30,000,000 U.S. dollar-denominated facility available to the Company (the “U.S. Revolver,” together with the Term Loan Facility, the “U.S. Credit Facilities”) and (ii) a credit agreement with the Agent as administrative agent and collateral agent, (the “International Lender”) providing a $15,000,000 Euro-denominated facility available to the Subsidiary (the “International Revolver” and together with the U.S. Revolver, the “Revolving Credit Facilities” and, together with the U.S. Credit Facilities, the “Secured Credit Facilities”).  The U.S. Revolver and the International Revolver include sub-limits for letters of credit amounting to $25,000,000 and $10,000,000, 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 covenants consist of a Maximum Consolidated Net Leverage Ratio and an Excess Account Concentration requirement commencing on December 31, 2014. The Consolidated Net Leverage Ratio is the ratio of (a) consolidated total debt (minus cash of up to $10,000,000 held in the aggregate) to consolidated earnings before interest, taxes, depreciation, amortization and share-based compensation for the trailing twelve months. At December 31, 2014, the ratio may not exceed 3.50 to 1.00.  The Excess Account Concentration covenant permits the U. S. Lenders and the International Lender to increase the interest rates by 2.0% if, as of the last day of any fiscal quarter, either (a) the accounts receivable from all clients located in any country not listed as a Permitted Country as defined in the Secured Credit Facilities (other than the United Arab Emirates) that are more than 120 days old (relative to the invoice date) constitute more than 10% of the total outstanding accounts receivable or (b) accounts receivable from all clients located in the United Arab Emirates that are more than 120 days old (relative to the invoice date) constitute more than 14% of the total outstanding accounts receivable; provided that, in each case, the accounts receivable due from clients located in Libya that exist as of the Closing Date shall be excluded for all purposes of this covenant. The interest rate will be reset as soon as the accounts receivable over 120 days decline below the 10% or 14% levels.
	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.
	In connection with the Refinancing, the Company wrote off deferred financing fees amounting to $1,482,000 by a charge to interest expense and related financing fees, net for the three- and nine-month periods ended September 30, 2014.
	Term Loan Facility
	The Company used the proceeds from the Term Loan Facility:
		·		for consummating the payoff and termination of the Company’s existing credit arrangements (the “Refinancing”) which consist of the Credit Agreement, dated as of October 18, 2012, among the Company, certain lenders and Obsidian Agency Services, Inc., as amended (the “2012 Term Loan Agreement”), and the Credit Agreement, dated as of June 30, 2009, among the Company, Bank of America, N.A. and certain other lenders, as amended (the “2009 Revolving Credit Agreement”); and
		·		to pay fees and expenses incurred in connection with the Secured Credit Facilities.
	The interest rate on the Term Loan Facility will be, at the Company’s option, either:
		·		the London Inter-Bank Offered Rate (“LIBOR”) for the relevant interest period plus 6.75% per annum, provided that such LIBOR shall not be lower than 1.00% per annum; or
		·		the Base Rate (as described below) plus 5.75% 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 1.0% per annum. Upon a default, the applicable rate of interest under the Secured Credit Facilities may increase by 2.0%. The LIBOR on the Term Loan Facilities (including when determining the Base Rate) shall in no event be less than 1.0% per annum.
	The Company has the right to prepay the Term Loan Facility in full or in part at any time without premium or penalty; provided, however that upon the occurrence of prepayments relating to certain repricing transactions within the first year following closing, a 1.0% prepayment premium will be payable. The Company is required to make mandatory prepayments of the Term Loan Facility, without premium or penalty, (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 (as defined in the agreement) for each fiscal year of the Borrowers commencing with the first full fiscal year ending after closing (which percentage would be stepped down upon the achievement and maintenance of certain metrics).
	The Term Loan Facility 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, cash proceeds thereof and certain bank accounts, as to which the Term Loan Facility is secured by a second-priority security interest.
	The Term Loan Facility has a term of six years, requires repayment of 0.25% of the original principal amount on a quarterly basis commencing on December 31, 2014 and ending on September 30, 2020, and was fully funded at closing. Any amounts repaid on the Term Loan Facility will not be available to be re-borrowed.
	The Company incurred fees and expenses related to the Term Loan Facility aggregating $6,643,000 which has been deferred and is included in other assets in the consolidated balance sheet at September 30, 2014. The deferred fees will be amortized to interest and related financing fees, net over a six-year period commencing on October 1, 2014.
	Revolving Credit Facilities
	The Company is required to use the proceeds from the Revolving Credit Facilities:
		·		for the Refinancing;
		·		to finance the working capital needs and general corporate purposes of the Borrowers and their subsidiaries;
		·		to pay fees and expenses incurred in connection with the Secured Credit Facilities; and
		·		for any other purposes not prohibited by the Secured Credit Facilities.
	The interest rate on borrowings under the U.S. Revolver will be, at the Company’s option from time to time, either:
		·		the LIBOR for the relevant interest period plus 3.75% per annum; or
		·		the Base Rate plus 2.75% per annum.
	The interest rate on borrowings under the International Revolver 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 4.00% per annum.
	The Company will pay a commitment fee calculated at 0.50% annually on the average daily unused portion of the U.S. Revolver, and the Subsidiary will pay a commitment fee calculated at 0.75% annually on the average daily unused portion of the International Revolver.
	The ability to borrow under each of the U.S. Revolver and the International Revolver is subject to a “borrowing base,” calculated using a formula based upon approximately 85% of receivables that meet or satisfy certain criteria (“Eligible Receivables”) and that are subject to a perfected security interest held by either the U.S. Lenders or the International Lender, plus, in the case of the International Revolver only, 10% of Eligible Receivables that are not subject to a perfected security interest held by the International Lender, subject to certain exceptions and restrictions.
	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.
	Generally, the obligations of the Company under the U.S. Revolver are secured by a first-priority security interest in the above-referenced accounts receivable, 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 Revolver would generally be secured by a first-priority security interest in substantially all accounts receivable, cash proceeds thereof and 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 Revolving Credit Facilities have a term of five years and require payment of interest only during the term. 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.
	The Company incurred fees and expenses related to the Revolving Credit Facilities aggregating $2,841,000 which has been deferred and is included in other assets in the consolidated balance sheet at September 30, 2014. The deferred fees will be amortized to interest expense and related financing fees, net over a five-year period commencing October 1, 2014.
	At September 30, 2014, the Company had $20,159,000 of outstanding letters of credit and $9,841,000 of available borrowing capacity under the U.S. Revolver.
	2012 Term Loan Agreement
	The Company entered into a Term Loan Agreement on October 18, 2012, which was amended from time to time. Borrowings under the Term Loan Agreement were collateralized by a second lien on substantially all of the Company’s assets, including, without limitation, accounts receivable, equipment, securities, financial assets and the proceeds of the foregoing, as well as by a pledge of 65% of the outstanding capital stock of its wholly-owned foreign subsidiary, Hill International N.V., and of certain of its other foreign subsidiaries.  The maturity date of the Term Loan was October 18, 2016.
	The Company paid interest on amounts outstanding from time to time under the 2012 Term Loan at a rate per annum equal to 7.50%.
	Also, contemporaneous with its entry into the 2012 Term Loan Agreement, the Company entered into a Fee Letter.  The Fee Letter required the Company to pay to the Lenders an exit fee (the “Exit Fee”), which fee was earned in full on the Closing Date and was due and payable on September 26, 2014, the date the 2012 Term Loan was paid in full (the “Exit Date”).  The Exit Fee meant the amount, if any, when paid to the Term Loan Lenders on the Exit Date, that would result in the internal annual rate of return to the Term Loan Lenders on the Exit Date being equal to, but no greater than, 20%; provided that in no event would the Exit Fee amount be less than $0 or greater than $11,790,000.  The IRR was to be calculated as the rate of return earned by the Term Loan Lenders on their initial investment in the 2012 Term Loan (calculated as the principal amount of the Term Loan less the Closing Fee of $25,000,000, or $75,000,000) through the Exit Date taking into account the payment by the Company to the Term Loan Lenders of all principal, interest and other payments to the Term Loan Lenders pursuant to the Term Loan Agreement.  There was no Exit Fee payable upon the payoff and termination of the Term Loan.
	On August 6, 2014, the Company made a mandatory principal prepayment of $9,522,402 from funds received in the equity offering (See Note 11).  On September 26, 2014, the Company paid $90,477,598 (including accelerated principal of $9,338,000 which was charged to interest expense and related financing fees for the three- and nine-month periods ended September 30, 2014), plus interest of $1,658,756, to payoff and terminate the Term Loan.
	2009 Revolving Credit Agreement
	The Company entered into a Credit Agreement, dated June 30, 2009 (the “Credit Agreement”), with Bank of America, N.A., Capital One, N.A., The PrivateBank and Trust Company, PNC Bank N.A. (the “Lenders”), and Bank of America, N.A., as Administrative Agent (the “Agent”), which was amended from time to time.
	The maturity date of the 2009 Credit Agreement was March 31, 2015. On September 26, 2014, the Company paid $25,500,000 (including $9,522,402 from funds received in the equity offering (See Note 11)), plus interest of $419,897, to payoff and terminate the Credit Agreement.
	Other Debt Arrangements
	The Company’s subsidiary, Hill International (Spain) S.A. (“Hill Spain”), maintains a revolving credit facility with 12 banks (the “Financing Entities”) in Spain providing for total borrowings, with interest at 6.50%, of up to €5,520,000 (approximately $7,005,000 at September 30, 2014). At September 30, 2014, total borrowings outstanding were €5,498,000 (approximately $6,976,000). The amount being financed (“Credit Contracts”) by each Financing Entity is between €156,000 (approximately $198,000) and €689,000 (approximately $874,000). The facility expires on December 17, 2016. The maximum available amount will be reduced to 75.0% at December 31, 2014 and to 50.0% at December 31, 2015. To guarantee Hill Spain’s obligations resulting from the Credit Contracts, Hill Spain provided a guarantee in favor of each one of the Financing Entities, which, additionally, and solely in the case of unremedied failure to make payment, and at the request of each of the Financing Entities, shall grant a first ranking pledge over a given percentage of corporate shares of Hill International Brasil Participacoes Ltda. for the principal, interest, fees, expenses or any other amount owed by virtue of the Credit Contracts, coinciding with the percentage of credit of each Financing Entity with respect to the total outstanding borrowings under this facility.
	Hill Spain maintains an unsecured credit facility with the Caja Badajoz Bank in Spain for €700,000 (approximately $888,000) at September 30, 2014. The interest rate at September 30, 2014 was 7.50%. At September 30, 2014, this facility was fully utilized with total borrowings outstanding of €700,000 (approximately $888,000).  The facility expires on December 23, 2014.
	The Company maintains a credit facility with the National Bank of Abu Dhabi which provides for total borrowings of up to AED 11,500,000 (approximately $3,131,000 at September 30, 2014) collateralized by certain overseas receivables. The interest rate is the one-month Emirates InterBank Offer Rate plus 3.00% (or 4.41% at September 30, 2014) but no less than 5.50%. At September 30, 2014, total borrowings outstanding were AED 27,000 (approximately $7,000). This facility also allows for to AED 127,033,000 (approximately $34,589,000 at September 30, 2014) in Letters of Guarantee of which AED 128,000,000 (approximately $34,863,000) were utilized at September 30, 2014. This facility is being renewed on a month-to-month basis.
	The Company maintains a credit facility with Marfin Bank (formerly Egnatia Bank), that allows for letters of guarantee up to €4,500,000 (approximately $5,711,000 at September 30, 2014), of which €2,197,000 (approximately $2,788,000) had been utilized at September 30, 2014.  The facility expires on April 30, 2018. Under the terms of the International Credit Facility, this credit facility may remain in place as long as Hill International, Inc. replaces Hill International N.V. as sole guarantor on or before December 25, 2014, or the credit facility must be reduced to €3,750,000.
	Engineering S.A. maintains three unsecured revolving credit facilities with two banks in Brazil aggregating 2,900,000 Brazilian Reais (approximately $1,185,000 at September 30, 2014), with a weighted average interest rate of 3.60% per month at September 30, 2014.  There were no borrowings outstanding on any of these facilities which are renewed automatically every three months.
	At September 30, 2014, the Company had $19,338,000 of available borrowing capacity under its International Revolver and its other foreign credit agreements.  There were no outstanding letters of credit under the International Revolver at September 30, 2014.
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, 2014, the maximum U.S. dollar equivalent of the commitments was $102,583,000 of which $56,280,000 is outstanding.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Information	'
Supplemental Cash Flow Information	'
	Note 8 — Supplemental Cash Flow Information
	The following table provides additional cash flow information (in thousands):
		Nine Months Ended
		September 30,
		2014			2013
	Interest and related financing fees paid	$	19,662		$	10,346
	Income taxes paid	$	5,375		$	6,901
	Reduction of noncontrolling interest in connection with acquisition of an additional interest in Engineering S.A.	$	(2,649	)	$	—
	Increase in additional paid in capital from issuance of shares of common stock related to purchase of CPI	$	618		$	—
	Increase in additional paid in capital from issuance of shares common stock from cashless exercise of stock options	$	538		$	—
	Reduction of noncontrolling interest in connection with acquisition of remaining noncontrolling interest in Hill Spain	$	—		$	(1,094	)
	Increase in intangible assets and goodwill in connection with acquisition of BCA and remaining noncontrolling interest in Hill Spain	$	—		$	3,026
	Common stock issued for acquisition of BCA	$	—		$	2,000

Earnings_per_Share

Earnings per Share	9 Months Ended
	Sep. 30, 2014
Earnings per Share	'
Earnings per Share	'
	Note 9 — Earnings per Share
	Basic earnings per common share has been computed using the weighted-average number of shares of common stock outstanding during the period. Diluted loss per common share incorporates the incremental shares issuable upon the assumed exercise of stock options, if dilutive.  Options to purchase 7,436,980 shares and 7,459,832 were excluded from the calculation of diluted (loss) earnings per common share for the three and nine months ended September 30, 2014 because they were antidilutive.  Dilutive stock options increased the average common stock outstanding by approximately 143,528 shares for the three months ended September 30, 2013 and by approximately 185,809 shares for the nine months September 30, 2013. Certain stock options were excluded from the calculation of diluted loss per common share because their effect was antidilutive for both of the three and nine months ended September 30, 2013.  The total number of such shares excluded from diluted loss per common share was 5,492,975 shares for the three months ended September 30, 2013 and 5,366,904 shares for the nine months ended September 30, 2013.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-Based Compensation	'
Share-Based Compensation	'
	Note 10 — Share-Based Compensation
	At September 30, 2014, the Company had 7,389,176 options outstanding with a weighted average exercise price of $4.57.  During the nine months ended September 30, 2014, the Company granted 500,000 options which vest over a four-year period, 1,285,000 options which vest over a five-year period, and 63,870 options which vested immediately. The options have a weighted average exercise price of $4.57 and a weighted average contractual live of 6.39 years. The aggregate fair value of the options was $4,210,000 calculated using the Black-Scholes valuation model.  The weighted average assumptions used to calculate fair value were: expected life — 4.59 years; volatility — 62.9% and risk-free interest rate —1.67%. During the first nine months of 2014, options for 524,350 shares with a weighted average exercise price of $3.00 were exercised, options for 483,500 shares with a weighted average exercise price of $7.70 lapsed and options for 26,000 shares with a weighted average exercise price of $3.87 were forfeited.
	During the nine months ended September 30, 2014, the Company issued 26,475 shares of its common stock to its Non-Employee Directors as part of their annual compensation.
	During the nine months ended September 30, 2014, employees purchased 39,456 common shares, for an aggregate purchase price of $158,000, 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 $785,000 and $674,000 for the three months ended September 30, 2014 and 2013, respectively, and $2,712,000 and $2,257,000 for the nine months ended September 30, 2014 and 2013, respectively.

Stockholders_Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity	'
Stockholders' Equity	'
	Note 11 — Stockholders’ Equity
	The following table summarizes the changes in stockholders’ equity during the nine months ended September 30, 2014 (in thousands):
					Hill International,			Noncontrolling
		Total			Inc. Stockholders			Interests
	Stockholders’ equity, December 31, 2013	$	143,031		$	131,144		$	11,887
	Net (loss) earnings	(6,306		)	(7,395		)	1,089
	Other comprehensive (loss) earnings	(1,467		)	(705		)	(762		)
	Comprehensive (loss) earnings	(7,773		)	(8,100		)	327
	Additional paid in capital	5,058			5,058			—
	Sale of common stock	38,078			38,078			—
	Acquisition of additional interest in Engineering S. A.	(3,556		)	(907		)	(2,649		)
	Treasury stock acquired	(538		)	(538		)	—
	Dividends paid to noncontrolling interests	(173		)	—			(173		)
	Stockholders’ equity, September 30, 2014	$	174,127		$	164,735		$	9,392
	In February 2014, the Company issued 171,308 shares of its common stock aggregating $618,000 to the former shareholders of Collaborative Partners, Inc. as payment for equity in excess of that required under the acquisition agreement.
	In March 2014, the Company’s Chairman and Chief Executive Officer exercised 200,000 options with an exercise price of $2.70 through the Company on a cashless basis.  The Company withheld 112,788 shares as payment for the options and placed those shares in treasury stock.  The Chairman and Chief Executive Officer received 87,212 shares from this transaction.
	During the nine months ended September 30, 2014, the Company received cash proceeds of $1,032,000 from the exercise of stock options.
	On August 6, 2014, in connection with the Refinancing (See Note 7), the Company sold 9,546,629 shares of its common stock in an underwritten equity offering and received net proceeds aggregating approximately $38,078,000, of which two mandatory prepayments of $9,522,402 were used to pay down the 2012 Term Loan Agreement and the 2009 Revolving Credit Agreement (See Note 7).

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Taxes	'
Income Taxes	'
	Note 12 — Income Taxes
	The effective tax rates for the three-month periods ended September 30, 2014 and 2013 were (78.9%) and (6.5%), respectively, and for the nine-month periods ended September 30, 2014 and 2013 were (614.9%) and 48.4%, respectively.  The Company’s effective tax rate for the year is based on the mix of projected income among the various foreign tax jurisdictions, adjusted for discrete transactions occurring during the period.  The difference in the Company’s 2014 effective tax rate compared to the 2013 effective tax rate was primarily related to a significant increase in the U.S. pre-tax loss in 2014 primarily due to the recognition by the Company of an additional $10,820,000 of interest expense in the U.S related to the refinancing and early termination of the Company’s senior credit facility and term loan during the third quarter of 2014. The Company also recognized an income tax benefit related to the reversal of the reserve for uncertain tax positions in a foreign jurisdiction totaling $0 and $2,473,000 for the three-month periods ended September 30, 2014 and 2013, respectively, and $2,514,000 and $2,473,000 for the nine-month periods ended September 30, 2014 and 2013, respectively. In addition, the Company recognized an income tax expense (benefit) resulting from adjustments to agree the prior year’s book amounts to the actual amounts per the tax returns totaling $206,000 and ($105,000) for the three-month periods ending September 30, 2014 and 2013, respectively, and $250,000 and $40,000 for the nine months ended September 30, 2014 and 2013, respectively. In both years, the Company’s effective tax rate is significantly higher than it otherwise would be primarily as a result of not being able to record an income tax benefit related to the U.S. net operating loss.
	The components of (loss) earnings before income taxes and the related income tax expense by United States and foreign jurisdictions were as follows (in thousands):
		Three Months Ended September 30, 2014								Three Months Ended September 30, 2013
		U.S.			Foreign		Total			U.S.			Foreign			Total
	(Loss) earnings before income taxes	$	(16,640	)	$	11,825	$	(4,815	)	$	(6,123	)	$	8,886		$	2,763
	Income tax expense, net	$	—		$	3,800	$	3,800		$	—		$	(179	)	$	(179	)
		Nine Months Ended September 30, 2014								Nine Months Ended September 30, 2013
		U.S.			Foreign		Total			U.S.			Foreign			Total
	(Loss) earnings before income taxes	$	(32,137	)	$	31,255	$	(882	)	$	(18,713	)	$	26,947		$	8,234
	Income tax expense, net	$	—		$	5,424	$	5,424		$	—		$	3,983		$	3,983
	The reserve for uncertain tax positions amounted to $840,000 and $2,933,000 at September 30, 2014 and December 31, 2013, respectively, and is included in “Other liabilities” in the consolidated balance sheet at those dates. During the three-month period ended September 30, 2014, there were no changes to the reserve for uncertain tax positions. During the nine-month period ended September 30, 2014, the reserve for uncertain tax positions was reduced by $2,514,000 based on management’s assessment that these items were effectively settled with the appropriate foreign tax authorities. The Company also reclassified $420,000 from “Income taxes payable” to the reserve for uncertain tax positions primarily due to tax positions taken in foreign jurisdictions. During the three- and nine-month periods ended September 30, 2013, the reserve for uncertain tax positions was reduced by $2,473,000 based on management’s assessment that these items were effectively settle with the appropriate foreign tax authorities.
	The Company’s policy is to record income tax related interest and penalties in income tax expense. At September 30, 2014, potential interest and penalties related to uncertain tax positions amounting to $592,000 was included in the balance above.
	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 ASC740, 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.

Business_Segment_Information

Business Segment Information	9 Months Ended
	Sep. 30, 2014
Business Segment Information	'
Business Segment Information	'
	Note 13 — Business Segment Information
	The Company’s business segments reflect how executive management makes resource decisions and assesses its performance. The Company bases these decisions on the type of services provided (Project Management and Construction Claims) and secondarily by their geography (U.S./Canada, Latin America, Europe, the Middle East, Africa and Asia/Pacific).
	The Project Management business segment provides extensive 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, and labor compliance services.
	The Construction Claims business segment provides such services as claims consulting, management consulting, litigation support, expert witness testimony, cost/damages assessment, delay/disruption analysis, adjudication, lender advisory, risk management, forensic accounting, fraud investigation and Project Neutral services to clients worldwide.
	The Company evaluates the performance of its segments primarily on operating profit before corporate overhead allocations and income taxes.
	Selected information by business segment and geographical area is summarized below (in thousands):
	Consulting Fee Revenue (“CFR”)
		Three Months Ended September 30,
		2014					2013
	Project Management	$	106,969		73.6	%	$	99,583	76.5	%
	Construction Claims	38,355			26.4		30,598		23.5
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	Total Revenue:
		Three Months Ended September 30,
		2014					2013
	Project Management	$	121,746		75.4	%	$	115,533	78.5	%
	Construction Claims	39,745			24.6		31,661		21.5
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	Operating Profit:
		Three Months Ended September 30,
		2014			2013
	Project Management	$	12,960		$	11,290
	Construction Claims	5,269			3,806
	Corporate	(6,932		)	(6,844		)
	Total	$	11,297		$	8,252
	Depreciation and Amortization Expense:
		Three Months Ended September 30,
		2014			2013
	Project Management	$	1,718		$	1,930
	Construction Claims	640			741
	Subtotal segments	2,358			2,671
	Corporate	54			54
	Total	$	2,412		$	2,725
	Consulting Fee Revenue by Geographic Region:
		Three Months Ended September 30,
		2014					2013
	U.S./Canada	$	32,228		22.2	%	$	31,197	24.0	%
	Latin America	10,503			7.2		11,329		8.7
	Europe	18,950			13.0		18,211		14.0
	Middle East	68,043			46.8		56,588		43.5
	Africa	5,580			3.8		6,735		5.2
	Asia/Pacific	10,020			7.0		6,121		4.6
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	U.S.	$	31,309		21.5	%	$	30,334	23.3	%
	Non-U.S.	114,015			78.5		99,847		76.7
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	For the third quarter ended September 30, 2014, consulting fee revenue for the United Arab Emirates amounted to $18,666,000 representing 12.8% of the total and Oman’s consulting fee revenue amounted to $16,098,000 representing 11.1% of the total.  No other country other than the United States accounted for 10% or more of consolidated consulting fee revenue.
	For the third quarter ended September 30, 2013, consulting fee revenue for the United Arab Emirates amounted to $16,017,000 representing 12.3% of the total and Oman’s consulting fee revenue amounted to $14,667,000 representing 11.3% of the total. No other country other than the United States accounted for 10% or more of consolidated consulting fee revenue.
	Total Revenue by Geographic Region:
		Three Months Ended September 30,
		2014					2013
	U.S./Canada	$	43,804		27.1	%	$	44,204	30.0	%
	Latin America	10,535			6.5		11,429		7.8
	Europe	20,266			12.5		19,556		13.3
	Middle East	70,218			43.5		57,804		39.3
	Africa	6,480			4.0		7,637		5.2
	Asia/Pacific	10,188			6.4		6,564		4.4
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	U.S.	$	42,876		26.6	%	$	43,327	29.4	%
	Non-U.S.	118,615			73.4		103,867		70.6
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	For the third quarter ended September 30, 2014, total revenue for the United Arab Emirates amounted to $19,112,000 representing 11.8% of the total and Oman’s total revenue amounted to $16,960,000 representing 10.5% of the total.  No other country other than the United States accounted for 10% or more of consolidated total revenue.
	For the third quarter ended September 30, 2013, total revenue for the United Arab Emirates amounted to $16,182,000 representing 11.0% of the total and Oman’s total revenue amounted to $14,697,000 representing 10.0% of the total.  No other country other than the United States accounted for 10% or more of consolidated total fee revenue.
Consulting Fee Revenue By Client Type:
	Three Months Ended September 30,
	2014					2013
U.S. federal government	$	4,562		3.1	%	$	3,722	2.9	%
U.S. state, regional and local governments	19,989			13.8		18,539		14.2
Foreign governments	54,361			37.4		47,516		36.5
Private sector	66,412			45.7		60,404		46.4
Total	$	145,324		100.0	%	$	130,181	100.0	%
Total Revenue By Client Type:
	Three Months Ended September 30,
	2014					2013
U.S. federal government	$	5,894		3.6	%	$	4,253	2.9	%
U.S. state, regional and local governments	28,627			17.7		24,901		16.9
Foreign governments	57,825			35.8		49,501		33.6
Private sector	69,145			42.9		68,539		46.6
Total	$	161,491		100.0	%	$	147,194	100.0	%
Property, Plant and Equipment, Net by Geographic Location:
	September 30, 2014			December 31, 2013
U.S./Canada	$	3,333		$	3,837
Latin America	1,487			1,351
Europe	1,758			2,575
Middle East	3,350			2,167
Africa	556			182
Asia/Pacific	577			501
Total	$	11,061		$	10,613
U.S.	$	3,333		$	3,837
Non-U.S.	7,728			6,776
Total	$	11,061		$	10,613
Consulting Fee Revenue (“CFR”)
	Nine Months Ended September 30,
	2014					2013
Project Management	$	317,278		74.3	%	$	293,560	77.0	%
Construction Claims	109,810			25.7		87,604		23.0
Total	$	427,088		100.0	%	$	381,164	100.0	%
Total Revenue
	Nine Months Ended September 30,
	2014					2013
Project Management	$	356,959		75.8	%	$	340,700	78.9	%
Construction Claims	114,184			24.2		91,031		21.1
Total	$	471,143		100.0	%	$	431,731	100.0	%
Operating Profit:
	Nine Months Ended September 30,
	2014			2013
Project Management	$	37,121		$	36,980
Construction Claims	10,941			9,629
Corporate	(22,110		)	(21,118		)
Total	$	25,952		$	25,491
Depreciation and Amortization Expense:
	Nine Months Ended September 30,
	2014			2013
Project Management	$	5,137		$	5,666
Construction Claims	1,977			2,082
Subtotal segments	7,114			7,748
Corporate	162			173
Total	$	7,276		$	7,921
Consulting Fee Revenue by Geographic Region:
	Nine Months Ended September 30,
	2014					2013
U.S./Canada	$	93,227		21.8	%	$	92,472	24.3	%
Latin America	32,315			7.6		36,385		9.5
Europe	58,337			13.7		57,888		15.2
Middle East	200,045			46.8		161,065		42.3
Africa	17,864			4.2		16,165		4.2
Asia/Pacific	25,300			5.9		17,189		4.5
Total	$	427,088		100.0	%	$	381,164	100.0	%
U.S.	$	90,533		21.2	%	$	89,792	23.6	%
Non-U.S.	336,555			78.8		291,372		76.4
Total	$	427,088		100.0	%	$	381,164	100.0	%
During the nine months ended September 30, 2014, consulting fee revenue for the United Arab Emirates amounted to $52,385,000 representing 12.3% of the total and Oman’s consulting fee revenue amounted to $50,175,000 representing 11.7% of the total.  No other country other than the United States accounted for 10% or more of consolidated consulting fee revenue.
During the nine months ended September 30, 2013, consulting fee revenue for the United Arab Emirates amounted to $50,485,000 representing 13.2% of the total. No other country other than the United States accounted for 10% or more of the consolidated consulting fee revenue.
Total Revenue by Geographic Region:
	Nine Months Ended September 30,
	2014					2013
U.S./Canada	$	122,127		25.9	%	$	131,430	30.4	%
Latin America	32,577			6.9		36,677		8.5
Europe	62,160			13.2		61,471		14.2
Middle East	207,691			44.1		165,492		38.3
Africa	20,576			4.4		18,733		4.3
Asia/Pacific	26,012			5.5		17,928		4.3
Total	$	471,143		100.0	%	$	431,731	100.0	%
U.S.	$	119,378		25.3	%	$	128,652	29.8	%
Non-U.S.	351,765			74.7		303,079		70.2
Total	$	471,143		100.0	%	$	431,731	100.0	%
For the first nine months ended September 30, 2014, total revenue for the United Arab Emirates amounted to $53,352,000 representing 11.3% of the total and Oman’s total revenue amounted to $53,773,000 representing 11.4% of the total.  No other country other than the United States accounted for 10% or more of consolidated total revenue.
For the first nine months ended September 30, 2013, total revenue for the United Arab Emirates amounted to $51,540,000 representing 11.9% of the total.  No other country other than the United States accounted for 10% or more of consolidated total revenue.
Consulting Fee Revenue By Client Type:
	Nine Months Ended September 30,
	2014					2013
U.S. federal government	$	11,169		2.6	%	$	11,613	3.0	%
U.S. state, regional and local governments	55,029			12.9		53,360		14.0
Foreign governments	165,325			38.7		129,608		34.0
Private sector	195,565			45.8		186,583		49.0
Total	$	427,088		100.0	%	$	381,164	100.0	%
Total Revenue By Client Type:
	Nine Months Ended September 30,
	2014					2013
U.S. federal government	$	13,763		2.9	%	$	13,436	3.1	%
U.S. state, regional and local governments	74,456			15.8		76,822		17.8
Foreign governments	175,490			37.2		135,426		31.4
Private sector	207,434			44.1		206,047		47.7
Total	$	471,143		100.0	%	$	431,731	100.0	%

Customer_Concentrations

Customer Concentrations	9 Months Ended
	Sep. 30, 2014
Customer Concentrations	'
Customer Concentrations	'
	Note 14 — Client Concentrations
	The Company had no clients that accounted for 10% or more of total revenue during the third quarter ended September 30, 2014 and one client, located in Oman, that accounted for 10% of total revenue during the same quarter in 2013. The Company had one client, located in Oman, that accounted for 10% and 11% of consulting fee revenue during the third quarter ended September 30, 2014 and 2013.
	The Company had one client, located in Oman, that accounted for 10% of total revenue during the nine months ended September 30, 2014.  No client accounted for 10% or more of total revenue for the nine months ended September 30, 2013. The Company had one client, located in Oman, that accounted for 11% of consulting fee revenue during the nine months ended September 30, 2014.  No client accounted for 10% or more of consulting fee revenue during the nine months ended September 30, 2013.
	One client, located in Libya, accounted for 20% and 25% of accounts receivable at September 30, 2014 and December 31, 2013.
	The Company has numerous contracts with U.S. federal government agencies that collectively accounted for 4% and 3% of total revenue during the third quarter ended September 30, 2014 and 2013 and 3% of total revenue during both the nine months ended September 30, 2014 and 2013.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies	'
Commitments and Contingencies	'
	Note 15 — Commitments and Contingencies
	General Litigation
	M.A. Angeliades, Inc. (“Plaintiff”) has 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 $8,771,000 for work performed as a subcontractor to the Company plus interest and other costs. The Company has accrued approximately $2,340,000, including interest of $448,000, based on invoices received from Plaintiff who has refused to provide invoices for additional work that Plaintiff claims to have performed. Until such time as the Company obtains invoices for the additional work and is able to provide those invoices to DDC for reimbursement or there is a full resolution of the litigation, it has no intention of paying Plaintiff. The Company believes that its position is defensible, however, there can be no assurance that it will receive a favorable verdict should this case proceed to trial.
	From time to time, the Company is a defendant or plaintiff in various legal actions 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 these 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.
	Acquisition—Related Contingencies
	The Company’s wholly-owned subsidiary, Hill International (Spain), S.A. (“Hill Spain”), acquired an indirect 60% 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 July 31, 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.  In April 2014, two of the minority shareholders exercised their ESA Put Option whereby Hill Spain will pay approximately 7,838,000 Brazilian Reais (approximately $3,203,000 at September 30, 2014).  After the transaction is completed, Hill Spain will own approximately 72% of ESA.  In accordance with the guidance in ASC 810-10-45-23, under Changes in the Parent’s Ownership Interest in a Subsidiary When There Is No Change in Control, the Company has accounted for this transaction as an equity transaction.  Accordingly, Hill Spain accrued the liability of 7,838,000 Brazilian Reais which is in other current liabilities, reduced noncontrolling interests by 5,839,000 Brazilian Reais (approximately $2,649,000), and reduced additional paid in capital by approximately 1,999,000 Brazilian Reais (approximately $907,000) which represents the excess of the fair value over the amount of the adjustment to noncontrolling interests.  The Company paid the liability plus interest in October 2014.
	The Company was contingently committed to issue shares of its common stock to the former shareholders of BCA in satisfaction of the Third Tranche Payment, which was to be based upon the difference between the average net profit before taxes for the two-year periods ended July 31, 2014 and the net profit before taxes for the year ended July 31, 2012.  BCA’s average net profit before taxes for the two years ended July 31, 2014 was not sufficient to earn any of the Third Tranche Payment, which had been estimated to be approximately $902,000 at the date of acquisition.  The Company had included the estimated liability in other current liabilities at December 31, 2013. Since no amount is due to the selling shareholders, the liability has been eliminated by a credit to selling, general and administrative expenses in the consolidated statements of operations for the three- and nine-month periods ended September 30, 2014.
	The Company is committed to issue shares of its common stock to the former shareholders of CPI for certain contingent consideration.  In connection therewith, on March 7, 2014, the Company issued 171,308 shares of its common stock with a value of $618,000 representing CPI’s common equity in excess of $600,000. On December 24, 2014, the former shareholders will receive, subject to potential offset, an additional $350,000 in shares of common stock; the number of shares will be determined based on the average closing price of the common stock for the ten trading days ending on December 18, 2014. The final issuance will be determined based upon 50% of the operating profit of CPI in excess of $1,000,000 for the first twelve-month period after closing, but in no event more than $500,000.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events	'
Subsequent Event	'
	Note 16 — Subsequent Events
	On October 31, 2014, the Company acquired all of the outstanding common stock of Angus Octan Scotland Ltd., which includes its subsidiary companies Cadogan Consultants Ltd., Cadogan Consult Ltd. and Cadogan International Ltd. (collectively, “Cadogans”), a group of firms that provide multi-disciplinary engineering and other technical consulting services.  Cadogans, which has approximately 30 professionals, has offices in Glasgow and Dundee in Scotland.  Total consideration for the acquisition consists of £1,800,000 plus the net asset value of the business to be determined within 30 days of closing.  This consideration consists of £1,000,000 paid in cash at closing, £600,000 to be paid in cash on October 31, 2015, and an earnout based upon the average earnings before interest, taxes, depreciation and amortization for the two-year period ending on October 31, 2016 (which amount shall not be less than £0 nor more than £200,000).

Accounts_Receivable_Tables

Accounts Receivable (Tables)	9 Months Ended
	Sep. 30, 2014
Accounts Receivable.	'
Components of accounts receivable	'
	The components of accounts receivable are as follows (in thousands):
		September 30, 2014			December 31, 2013
	Billed	$	206,556		$	206,469
	Retainage, current portion	13,806			10,215
	Unbilled	38,386			24,857
		258,748			241,541
	Allowance for doubtful accounts	(7,664		)	(9,530		)
		$	251,084		$	232,011

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Intangible Assets	'
Summary of acquired intangible assets	'
	The following table summarizes the Company’s acquired intangible assets (in thousands):
			September 30, 2014						December 31, 2013
			Gross						Gross
			Carrying			Accumulated			Carrying			Accumulated
			Amount			Amortization			Amount			Amortization
	Client relationships		$	36,133		$	20,632		$	37,501		$	18,238
	Acquired contract rights		11,392			9,404			11,874			8,541
	Trade names		3,056			1,041			3,266			898
	Total		$	50,581		$	31,077		$	52,641		$	27,677
	Intangible assets, net		$	19,504					$	24,964
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,
	2014			2013			2014			2013
	$	1,518		$	1,723		$	4,650		$	4,957
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
	Year Ending December 31,		Expense
	2014 (remaining 3 months)		$	1,460
	2015		5,190
	2016		3,938
	2017		2,970
	2018		1,973

Goodwill_Tables

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill	'
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 the nine months of 2014 (in thousands):
		Project			Construction
		Management			Claims			Total
	Balance, December 31, 2013	$	58,448		$	27,405		$	85,853
	Additions	—			—			—
	Translation adjustments	(2,317		)	(464		)	(2,781		)
	Balance, September 30, 2014	$	56,131		$	26,941		$	83,072

Accounts_Payable_and_Accrued_E1

Accounts Payable and Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2014
Accounts Payable and Accrued Expenses	'
Components of accounts payable and accrued expenses	'
	Below are the components of accounts payable and accrued expenses (in thousands):
		September 30, 2014		December 31, 2013
	Accounts payable	$	23,816	$	25,349
	Accrued payroll	41,892		35,732
	Accrued subcontractor fees	4,526		6,212
	Accrued agency fees	16,055		17,623
	Accrued legal and professional fees	608		1,239
	Other accrued expenses	6,728		6,115
		$	93,626	$	92,270

Notes_Payable_and_LongTerm_Deb1

Notes Payable and Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Notes Payable and Long-Term Debt	'
Summary of outstanding debt obligations	'
	Outstanding debt obligations are as follows (in thousands):
		September 30, 2014		December 31, 2013
	2014 Term Loan Facility	$	120,000	$	—
	2012 Term Loan Payable	—		84,474
	2009 Revolving Credit loan payable under the Credit Agreement(the weighted average interest rate of all borrowings was 5.32% at December 31, 2013)	—		39,000
	Borrowings under revolving credit facilities with a consortium of banks in Spain	6,976		7,670
	Borrowings under unsecured credit facility with Caja Badajoz	888		2,047
	Borrowings under revolving credit facility with the National Bank of Abu Dhabi	7		—
	Other notes payable	—		68
		127,871		133,259
	Less current maturities	2,580		18,974
	Notes payable and long-term debt, net of current maturities	$	125,291	$	114,285

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Information	'
Summary of additional cash flow information	'
	The following table provides additional cash flow information (in thousands):
		Nine Months Ended
		September 30,
		2014			2013
	Interest and related financing fees paid	$	19,662		$	10,346
	Income taxes paid	$	5,375		$	6,901
	Reduction of noncontrolling interest in connection with acquisition of an additional interest in Engineering S.A.	$	(2,649	)	$	—
	Increase in additional paid in capital from issuance of shares of common stock related to purchase of CPI	$	618		$	—
	Increase in additional paid in capital from issuance of shares common stock from cashless exercise of stock options	$	538		$	—
	Reduction of noncontrolling interest in connection with acquisition of remaining noncontrolling interest in Hill Spain	$	—		$	(1,094	)
	Increase in intangible assets and goodwill in connection with acquisition of BCA and remaining noncontrolling interest in Hill Spain	$	—		$	3,026
	Common stock issued for acquisition of BCA	$	—		$	2,000

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Stockholders' Equity	'
Summary of changes in stockholders' equity	'
	The following table summarizes the changes in stockholders’ equity during the nine months ended September 30, 2014 (in thousands):
					Hill International,			Noncontrolling
		Total			Inc. Stockholders			Interests
	Stockholders’ equity, December 31, 2013	$	143,031		$	131,144		$	11,887
	Net (loss) earnings	(6,306		)	(7,395		)	1,089
	Other comprehensive (loss) earnings	(1,467		)	(705		)	(762		)
	Comprehensive (loss) earnings	(7,773		)	(8,100		)	327
	Additional paid in capital	5,058			5,058			—
	Sale of common stock	38,078			38,078			—
	Acquisition of additional interest in Engineering S. A.	(3,556		)	(907		)	(2,649		)
	Treasury stock acquired	(538		)	(538		)	—
	Dividends paid to noncontrolling interests	(173		)	—			(173		)
	Stockholders’ equity, September 30, 2014	$	174,127		$	164,735		$	9,392

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Taxes	'
Schedule of components of earnings (loss) before income taxes by United States and foreign jurisdictions	'
	The components of (loss) earnings before income taxes and the related income tax expense by United States and foreign jurisdictions were as follows (in thousands):
		Three Months Ended September 30, 2014								Three Months Ended September 30, 2013
		U.S.			Foreign		Total			U.S.			Foreign			Total
	(Loss) earnings before income taxes	$	(16,640	)	$	11,825	$	(4,815	)	$	(6,123	)	$	8,886		$	2,763
	Income tax expense, net	$	—		$	3,800	$	3,800		$	—		$	(179	)	$	(179	)
		Nine Months Ended September 30, 2014								Nine Months Ended September 30, 2013
		U.S.			Foreign		Total			U.S.			Foreign			Total
	(Loss) earnings before income taxes	$	(32,137	)	$	31,255	$	(882	)	$	(18,713	)	$	26,947		$	8,234
	Income tax expense, net	$	—		$	5,424	$	5,424		$	—		$	3,983		$	3,983

Business_Segment_Information_T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Business Segment Information	'
Consulting Fee Revenue and Total Revenue	'
	Selected information by business segment and geographical area is summarized below (in thousands):
	Consulting Fee Revenue (“CFR”)
		Three Months Ended September 30,
		2014					2013
	Project Management	$	106,969		73.6	%	$	99,583	76.5	%
	Construction Claims	38,355			26.4		30,598		23.5
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	Total Revenue:
		Three Months Ended September 30,
		2014					2013
	Project Management	$	121,746		75.4	%	$	115,533	78.5	%
	Construction Claims	39,745			24.6		31,661		21.5
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	Consulting Fee Revenue (“CFR”)
		Nine Months Ended September 30,
		2014					2013
	Project Management	$	317,278		74.3	%	$	293,560	77.0	%
	Construction Claims	109,810			25.7		87,604		23.0
	Total	$	427,088		100.0	%	$	381,164	100.0	%
	Total Revenue
		Nine Months Ended September 30,
		2014					2013
	Project Management	$	356,959		75.8	%	$	340,700	78.9	%
	Construction Claims	114,184			24.2		91,031		21.1
	Total	$	471,143		100.0	%	$	431,731	100.0	%
Operating Profit	'
	Operating Profit:
		Three Months Ended September 30,
		2014			2013
	Project Management	$	12,960		$	11,290
	Construction Claims	5,269			3,806
	Corporate	(6,932		)	(6,844		)
	Total	$	11,297		$	8,252
	Operating Profit:
		Nine Months Ended September 30,
		2014			2013
	Project Management	$	37,121		$	36,980
	Construction Claims	10,941			9,629
	Corporate	(22,110		)	(21,118		)
	Total	$	25,952		$	25,491
Depreciation and Amortization Expense	'
	Depreciation and Amortization Expense:
		Three Months Ended September 30,
		2014			2013
	Project Management	$	1,718		$	1,930
	Construction Claims	640			741
	Subtotal segments	2,358			2,671
	Corporate	54			54
	Total	$	2,412		$	2,725
	Depreciation and Amortization Expense:
		Nine Months Ended September 30,
		2014			2013
	Project Management	$	5,137		$	5,666
	Construction Claims	1,977			2,082
	Subtotal segments	7,114			7,748
	Corporate	162			173
	Total	$	7,276		$	7,921
Consulting Fee Revenue by Geographic Region	'
	Consulting Fee Revenue by Geographic Region:
		Three Months Ended September 30,
		2014					2013
	U.S./Canada	$	32,228		22.2	%	$	31,197	24.0	%
	Latin America	10,503			7.2		11,329		8.7
	Europe	18,950			13.0		18,211		14.0
	Middle East	68,043			46.8		56,588		43.5
	Africa	5,580			3.8		6,735		5.2
	Asia/Pacific	10,020			7.0		6,121		4.6
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	U.S.	$	31,309		21.5	%	$	30,334	23.3	%
	Non-U.S.	114,015			78.5		99,847		76.7
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	Total Revenue by Geographic Region:
		Three Months Ended September 30,
		2014					2013
	U.S./Canada	$	43,804		27.1	%	$	44,204	30.0	%
	Latin America	10,535			6.5		11,429		7.8
	Europe	20,266			12.5		19,556		13.3
	Middle East	70,218			43.5		57,804		39.3
	Africa	6,480			4.0		7,637		5.2
	Asia/Pacific	10,188			6.4		6,564		4.4
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	U.S.	$	42,876		26.6	%	$	43,327	29.4	%
	Non-U.S.	118,615			73.4		103,867		70.6
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	Consulting Fee Revenue by Geographic Region:
		Nine Months Ended September 30,
		2014					2013
	U.S./Canada	$	93,227		21.8	%	$	92,472	24.3	%
	Latin America	32,315			7.6		36,385		9.5
	Europe	58,337			13.7		57,888		15.2
	Middle East	200,045			46.8		161,065		42.3
	Africa	17,864			4.2		16,165		4.2
	Asia/Pacific	25,300			5.9		17,189		4.5
	Total	$	427,088		100.0	%	$	381,164	100.0	%
	U.S.	$	90,533		21.2	%	$	89,792	23.6	%
	Non-U.S.	336,555			78.8		291,372		76.4
	Total	$	427,088		100.0	%	$	381,164	100.0	%
	Total Revenue by Geographic Region:
		Nine Months Ended September 30,
		2014					2013
	U.S./Canada	$	122,127		25.9	%	$	131,430	30.4	%
	Latin America	32,577			6.9		36,677		8.5
	Europe	62,160			13.2		61,471		14.2
	Middle East	207,691			44.1		165,492		38.3
	Africa	20,576			4.4		18,733		4.3
	Asia/Pacific	26,012			5.5		17,928		4.3
	Total	$	471,143		100.0	%	$	431,731	100.0	%
	U.S.	$	119,378		25.3	%	$	128,652	29.8	%
	Non-U.S.	351,765			74.7		303,079		70.2
	Total	$	471,143		100.0	%	$	431,731	100.0	%
Consulting Fee Revenue By Client Type	'
	Consulting Fee Revenue By Client Type:
		Three Months Ended September 30,
		2014					2013
	U.S. federal government	$	4,562		3.1	%	$	3,722	2.9	%
	U.S. state, regional and local governments	19,989			13.8		18,539		14.2
	Foreign governments	54,361			37.4		47,516		36.5
	Private sector	66,412			45.7		60,404		46.4
	Total	$	145,324		100.0	%	$	130,181	100.0	%
	Total Revenue By Client Type:
		Three Months Ended September 30,
		2014					2013
	U.S. federal government	$	5,894		3.6	%	$	4,253	2.9	%
	U.S. state, regional and local governments	28,627			17.7		24,901		16.9
	Foreign governments	57,825			35.8		49,501		33.6
	Private sector	69,145			42.9		68,539		46.6
	Total	$	161,491		100.0	%	$	147,194	100.0	%
	Consulting Fee Revenue By Client Type:
		Nine Months Ended September 30,
		2014					2013
	U.S. federal government	$	11,169		2.6	%	$	11,613	3.0	%
	U.S. state, regional and local governments	55,029			12.9		53,360		14.0
	Foreign governments	165,325			38.7		129,608		34.0
	Private sector	195,565			45.8		186,583		49.0
	Total	$	427,088		100.0	%	$	381,164	100.0	%
	Total Revenue By Client Type:
		Nine Months Ended September 30,
		2014					2013
	U.S. federal government	$	13,763		2.9	%	$	13,436	3.1	%
	U.S. state, regional and local governments	74,456			15.8		76,822		17.8
	Foreign governments	175,490			37.2		135,426		31.4
	Private sector	207,434			44.1		206,047		47.7
	Total	$	471,143		100.0	%	$	431,731	100.0	%
Property, Plant and Equipment, Net by Geographic Location	'
	Property, Plant and Equipment, Net by Geographic Location:
		September 30, 2014			December 31, 2013
	U.S./Canada	$	3,333		$	3,837
	Latin America	1,487			1,351
	Europe	1,758			2,575
	Middle East	3,350			2,167
	Africa	556			182
	Asia/Pacific	577			501
	Total	$	11,061		$	10,613
	U.S.	$	3,333		$	3,837
	Non-U.S.	7,728			6,776
	Total	$	11,061		$	10,613

The_Company_Details

The Company (Details)	9 Months Ended
	Sep. 30, 2014
	division
The Company	'
Number of key operating divisions	2

Accounts_Receivable_Details

Accounts Receivable (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Components of accounts receivable	'	'
Billed	$206,556	$206,469
Retainage, current portion	13,806	10,215
Unbilled	38,386	24,857
Accounts receivable, gross	258,748	241,541
Allowance for doubtful accounts	-7,664	-9,530
Total	$251,084	$232,011

Accounts_Receivable_Details_2

Accounts Receivable (Details 2)	Sep. 30, 2014	Dec. 31, 2013	Mar. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
	USD ($)	USD ($)	Libya	Libya	Libya	Libya	Libya	Libya	Libya
			USD ($)	USD ($)	Pounds sterling	Pounds sterling	LYD	LYD	Dollars
					USD ($)	GBP (£)	USD ($)		USD ($)
Accounts Receivable	'	'	'	'	'	'	'	'	'
Cash proceeds from collection of accounts receivable	'	'	$6,800,000	$9,900,000	$300,000	£ 200,000	$1,700,000	2,100,000	$4,800,000
Accounts receivable outstanding	251,084,000	232,011,000	'	50,100,000	'	'	'	'	'
Amount of letters of credit endorsed by ODAC	'	'	'	$11,300,000	'	'	'	'	'
Extension the standby letters of credit term	'	'	'	'6 months	'	'	'	'	'

Intangible_Assets_Details

Intangible Assets (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary of acquired intangible assets	'	'
Gross Carrying Amount	$50,581	$52,641
Accumulated Amortization	31,077	27,677
Intangible assets, net	19,504	24,964
Client relationship	'	'
Summary of acquired intangible assets	'	'
Gross Carrying Amount	36,133	37,501
Accumulated Amortization	20,632	18,238
Acquired contract rights	'	'
Summary of acquired intangible assets	'	'
Gross Carrying Amount	11,392	11,874
Accumulated Amortization	9,404	8,541
Trade names	'	'
Summary of acquired intangible assets	'	'
Gross Carrying Amount	3,056	3,266
Accumulated Amortization	$1,041	$898

Intangible_Assets_Details_2

Intangible Assets (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Intangible Assets	'	'	'	'
Amortization expense related to intangible assets	$1,518	$1,723	$4,650	$4,957
Estimated amortization expense of intangible assets for the next five years	'	'	'	'
2014 (remaining 3 months)	1,460	'	1,460	'
2015	5,190	'	5,190	'
2016	3,938	'	3,938	'
2017	2,970	'	2,970	'
2018	$1,973	'	$1,973	'

Goodwill_Details

Goodwill (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Summary of changes in carrying value of goodwill during 2013	'	'
Balance at the beginning of the period	'	$85,853
Translation adjustments	'	-2,781
Balance at the end of the period	83,072	83,072
Project Management	'	'
Goodwill	'	'
Amount fair value exceeded carrying value	227,700	'
Summary of changes in carrying value of goodwill during 2013	'	'
Balance at the beginning of the period	'	58,448
Translation adjustments	'	-2,317
Balance at the end of the period	56,131	56,131
Construction Claims	'	'
Goodwill	'	'
Amount fair value exceeded carrying value	70,800	'
Summary of changes in carrying value of goodwill during 2013	'	'
Balance at the beginning of the period	'	27,405
Translation adjustments	'	-464
Balance at the end of the period	$26,941	$26,941

Accounts_Payable_and_Accrued_E2

Accounts Payable and Accrued Expenses (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Components of accounts payable and accrued expenses	'	'
Accounts payable	$23,816	$25,349
Accrued payroll	41,892	35,732
Accrued subcontractor fees	4,526	6,212
Accrued agency fees	16,055	17,623
Accrued legal and professional fees	608	1,239
Other accrued expenses	6,728	6,115
Accounts payable and accrued expenses, net	$93,626	$92,270

Notes_Payable_and_LongTerm_Deb2

Notes Payable and Long-Term Debt (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	$127,871,000	$133,259,000
Less current maturities	2,580,000	18,974,000
Notes Payable, Noncurrent	125,291,000	114,285,000
Term loan payable	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	120,000,000	84,474,000
Revolving credit facility | Bank of America	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	'	39,000,000
Weighted average interest rate of borrowings (as a percent)	'	2009.00%
Revolving credit facility | Consortium of banks in Spain	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	6,976,000	7,670,000
Revolving credit facility | Caja Badajoz bank in Spain	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	888,000	2,047,000
Revolving credit facility | National Bank of Abu Dhabi	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	7,000	'
Other notes payable	'	'
Summary of outstanding debt obligations	'	'
Long-term Debt, Total	'	$68,000

Notes_Payable_and_LongTerm_Deb3

Notes Payable and Long-Term Debt (Details 2 ) (USD $)

9 Months Ended

0 Months Ended

3 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

Sep. 30, 2014

Sep. 26, 2014

Sep. 30, 2014

Sep. 26, 2014

Jun. 12, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 30, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 30, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Secured Credit Facilities

Secured Credit Facilities

Secured Credit Facilities

Secured Credit Facilities

Term loan payable

Term loan payable

Term loan payable

Term loan payable

Term loan payable

Term loan payable

Term loan payable

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Letters of credit

Letters of credit

Letters of credit

Non Permitted Country

United Arab Emirates

LIBOR

LIBOR

One Month LIBOR

Base Rate

Federal Funds effective rate

US Dollar Revolver

US Dollar Revolver

US Dollar Revolver

US Dollar Revolver

US Dollar Revolver

International Revolver

International Revolver

International Revolver

US Dollar Revolver

International Revolver

Secured Credit Facilities

Secured Credit Facilities

Minimum

LIBOR

Base Rate

LIBOR

Maximum

Maximum

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds after the underwriting discount and expenses

$38,078,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,000,000

'

'

'

15,000,000

'

'

25,000,000

10,000,000

'

'

Aggregate principal amount

'

'

'

'

165,000,000

'

120,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Consolidated leverage ratio not to exceed

'

0.035

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash excluded from consolidated net leverage ratio

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument increase in applicable interest rate for past due account receivable limit exceeded

'

'

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of receivables more than 120 days old

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.00%

14.00%

Write-off of deferred financing costs

'

'

1,502,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Pay off and termination of revolving credit facility

25,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of debt

'

'

'

'

'

'6 years

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Quarterly principal payment, percentage

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred financing fees

'

'

6,643,000

'

'

'

'

'

'

'

'

'

2,841,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt issuance costs amortization term

'

'

'

'

'

'6 years

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis of effective interest rate (as a percent)

'

'

'

'

'

'

'

6.75%

'

1.00%

5.75%

0.50%

'

'

'

'

3.75%

2.75%

'

'

4.00%

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in applicable interest rate upon default (as a percent)

'

2.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unused facility commitment fees percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

'

'

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%

'

'

'

'

'

'

'

Percentage of prepayment premium that would be payable upon occurrence of repricing transactions within the first year following closing

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amounts outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$9,841,000

'

'

'

'

'

'

$20,159,000

'

'

'

'

Notes_Payable_and_LongTerm_Deb4

Notes Payable and Long-Term Debt (Details 3) (USD $)	3 Months Ended	9 Months Ended		0 Months Ended				0 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Aug. 06, 2014	Sep. 26, 2014	Sep. 30, 2014	Sep. 26, 2014	Aug. 06, 2014	Sep. 26, 2014	Sep. 26, 2014	Sep. 26, 2014	Sep. 30, 2014
				2012 Secured Term Loan	2012 Secured Term Loan	2012 Secured Term Loan	2012 Secured Term Loan	2012 Secured Term Loan	2012 Secured Term Loan	2009 Revolving Credit Facility	2009 Revolving Credit Facility
								Minimum	Maximum
Description of terms of credit agreement	'	'	'	'	'	'	'	'	'	'	'
Pay off and termination of revolving credit facility	'	$25,500,000	'	'	'	'	'	'	'	$25,500,000	'
Interest paid as part of termination of debt	10,820,000	'	'	1,658,756	'	'	'	'	'	'	419,897
Collateral pledged, percentage of outstanding capital of Hill International N.V. and certain other foreign subsidiaries	'	'	'	65.00%	'	'	'	'	'	'	'
Interest rate (as a percent)	'	'	'	'	7.50%	'	'	'	'	'	'
Term loan target internal rate of return (as a percent)	'	'	'	20.00%	'	'	'	'	'	'	'
Exit Fee Amount	'	'	'	9,338,000	'	'	'	0	11,790,000	'	'
Closing Fee	'	'	'	25,000,000	'	'	'	'	'	'	'
Aggregate principal amount	'	'	'	'	'	75,000,000	'	'	'	'	'
Mandatory prepayment amount	'	'	9,522,402	'	'	'	9,522,402	'	'	'	'
Pay off and terminate of Loan	'	'	'	$90,477,598	'	'	'	'	'	'	'

Notes_Payable_and_LongTerm_Deb5

Notes Payable and Long-Term Debt (Details 4)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

USD ($)

USD ($)

Revolving credit facility

Revolving credit facility

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Consortium of banks in Spain

Consortium of banks in Spain

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

USD ($)

USD ($)

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

Consortium of banks in Spain

USD ($)

EUR (€)

31-Dec-14

31-Dec-15

Minimum

Minimum

Maximum

Maximum

item

item

USD ($)

EUR (€)

USD ($)

EUR (€)

Description of terms of credit agreement

'

'

'

'

'

'

'

'

'

'

'

'

Number of banks involved in revolving credit facility

'

'

'

'

12

12

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

6.50%

6.50%

'

'

'

'

'

'

Borrowing capacity

'

'

'

'

$7,005,000

€ 5,520,000

'

'

'

'

'

'

Total debt

127,871,000

133,259,000

6,976,000

7,670,000

6,976,000

5,498,000

'

'

'

'

'

'

Total amount being financed by Financing Entity

'

'

'

'

'

'

'

'

$198,000

€ 156,000

$874,000

€ 689,000

Reduction in maximum available amount percentage

'

'

'

'

'

'

75.00%

50.00%

'

'

'

'

Notes_Payable_and_LongTerm_Deb6

Notes Payable and Long-Term Debt (Details 5)

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 26, 2014

Sep. 30, 2014

Sep. 26, 2014

Dec. 31, 2014

USD ($)

Other Foreign Banks [Member]

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Letters of credit

Letters of credit

Letters of credit

Letters of credit

Letters of credit

Hill Spain

Hill Spain

Engineering S.A.

Engineering S.A.

US Dollar Revolver

US Dollar Revolver

US Dollar Revolver

International Revolver

International Revolver

International Revolver

Subsequent events

USD ($)

National Bank of Abu Dhabi

National Bank of Abu Dhabi

National Bank of Abu Dhabi

National Bank of Abu Dhabi

USD ($)

National Bank of Abu Dhabi

National Bank of Abu Dhabi

Marfin Bank

Marfin Bank

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Revolving credit facility

Letters of credit

Revolving credit facility

Revolving credit facility

Letters of credit

Letters of credit

USD ($)

AED

Emirates InterBank Offer Rate

Emirates InterBank Offer Rate

USD ($)

AED

USD ($)

EUR (€)

Caja Badajoz bank in Spain

Caja Badajoz bank in Spain

USD ($)

BRL

USD ($)

USD ($)

USD ($)

USD ($)

Other Foreign Banks [Member]

USD ($)

Marfin Bank

Minimum

USD ($)

EUR (€)

item

item

USD ($)

USD ($)

loanfacility

loanfacility

Description of terms of credit agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

$102,583,000

$3,131,000

11,500,000

'

'

'

$34,589,000

127,033,000

$5,711,000

€ 4,500,000

$888,000

€ 700,000

$1,185,000

'

'

$30,000,000

$25,000,000

$15,000,000

$19,338,000

$10,000,000

$3,750,000

Letters of credit outstanding

'

56,280,000

'

'

'

'

'

34,863,000

128,000,000

2,788,000

2,197,000

'

'

'

'

'

'

'

'

'

'

'

Reference rate

'

'

'

'

'one-month Emirates InterBank Offer Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis of effective interest rate (as a percent)

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

5.50%

'

'

'

'

'

7.50%

7.50%

'

'

'

'

'

'

'

'

'

Effective interest rate (as a percent)

'

'

'

'

4.41%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amounts outstanding

'

'

7,000

27,000

'

'

20,159,000

'

'

'

'

888,000

700,000

0

2,900,000

9,841,000

'

'

'

0

'

'

Number of revolving credit lines maintained by Engineering S.A.

'

'

'

'

'

'

'

'

'

'

'

'

'

3

3

'

'

'

'

'

'

'

Number of banks involved in revolving credit facility

'

'

'

'

'

'

'

'

'

'

'

'

'

2

2

'

'

'

'

'

'

'

Weighted average interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

3.60%

3.60%

'

'

'

'

'

'

'

Period of automatic renewal

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 months

'3 months

'

'

'

'

'

'

'

Payoff and termination of term loan

$100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Summary of additional cash flow information	'	'
Interest and related financing fees paid	$19,662,000	$10,346,000
Income taxes paid	5,375,000	6,901,000
Increase in intangible assets and goodwill in connection with acquisition of BCA and remaining noncontrolling interest in Hill Spain	'	3,026,000
Common stock issued for acquisition of BCA	'	2,000,000
Summary of additional cash flow information	'	'
Reduction of noncontrolling interest in connection with acquisition of an additional interest	2,649,000	'
Additional Paid-in Capital	'	'
Summary of additional cash flow information	'	'
Increase in additional paid in capital from issuance of shares of common stock from cashless exercise of stock options	538,000	'
CPI | Additional Paid-in Capital	'	'
Summary of additional cash flow information	'	'
Increase in additional paid in capital from issuance of shares of common stock related to purchase of CPI	618,000	'
Engineering S.A.	'	'
Summary of additional cash flow information	'	'
Reduction of noncontrolling interest in connection with acquisition of an additional interest	-2,649,000	'
Hill Spain	'	'
Summary of additional cash flow information	'	'
Reduction of noncontrolling interest in connection with acquisition of an additional interest	'	($1,094,000)

Earnings_Loss_per_Share_Detail

Earnings (Loss) per Share (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings per Share	'	'	'	'
Dilutive stock options (in shares)	'	143,528	'	185,809
Total number of shares excluded from diluted loss per common share	7,452,501	5,492,975	7,464,443	5,366,904

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-Based Compensation	'	'	'	'
Options outstanding (in shares)	7,389,176	'	7,389,176	'
Weighted average exercise price of outstanding options (in dollars per share)	$4.57	'	$4.57	'
Weighted-average contractual life of options granted	'	'	'6 years 4 months 21 days	'
Aggregate fair value of options granted (in dollars)	'	'	$4,210,000	'
Options exercised (in shares)	'	'	524,350	'
Weighted average exercise price of options exercised (in dollars per share)	'	'	$3	'
Options lapsed (in shares)	'	'	483,500	'
Weighted average exercise price of options lapsed (in dollars per share)	'	'	$7.73	'
Options forfeited (in shares)	'	'	75,000	'
Weighted average exercise price of options forfeited (in dollars per share)	'	'	$6.21	'
Share-based compensation expense recognized (in dollars)	785,000	674,000	2,712,000	2,257,000
Weighted average assumptions used to estimate the fair value of options granted	'	'	'	'
Expected life	'	'	'4 years 7 months 2 days	'
Volatility (as a percent)	'	'	62.90%	'
Risk-free interest rate (as a percent)	'	'	1.67%	'
2008 Employee Stock Purchase Plan	'	'	'	'
Share-Based Compensation	'	'	'	'
Shares purchased	'	'	39,456	'
Aggregate purchase price	'	'	$158,000	'
Non-Employee Director Stock Grant Plan	'	'	'	'
Share-Based Compensation	'	'	'	'
Options granted (in shares)	'	'	26,475	'
Options vesting over a four-year period	'	'	'	'
Share-Based Compensation	'	'	'	'
Options granted (in shares)	'	'	500,000	'
Award vesting period	'	'	'4 years	'
Options vesting over a five-year period	'	'	'	'
Share-Based Compensation	'	'	'	'
Options granted (in shares)	'	'	1,285,000	'
Award vesting period	'	'	'5 years	'
Options vested immediately	'	'	'	'
Share-Based Compensation	'	'	'	'
Options granted (in shares)	'	'	63,870	'

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended	0 Months Ended		1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Aug. 06, 2014	Mar. 31, 2014	Mar. 07, 2014	Mar. 07, 2014	Feb. 28, 2014
					item	Chairman and Chief Executive Officer	CPI	CPI	CPI
Increase (decrease) in stockholders' equity	'	'	'	'	'	'	'	'	'
Balance at beginning	'	'	$143,031,000	'	'	'	'	'	'
Consolidated net (loss) earnings	-8,615,000	2,942,000	-6,306,000	4,251,000	'	'	'	'	'
Other comprehensive earnings	'	'	-1,467,000	'	'	'	'	'	'
Comprehensive earnings	'	'	-7,773,000	'	'	'	'	'	'
Additional paid in capital	'	'	5,058,000	'	'	'	'	'	'
Sale of common stock	'	'	38,078,000	'	'	'	'	'	'
Acquisition of additional interest in Engineering S. A.	'	'	3,556,000	'	'	'	'	'	'
Treasury stock acquired	'	'	-538,000	'	'	'	'	'	'
Balance at ending	174,127,000	'	174,127,000	'	'	'	'	'	'
Hill International, Inc. Stockholders - Stockholders' equity at the beginning of the period	'	'	131,144,000	'	'	'	'	'	'
Net earnings	-8,966,000	2,556,000	-7,395,000	2,895,000	'	'	'	'	'
Other comprehensive earnings	'	'	-705,000	'	'	'	'	'	'
Comprehensive earnings	'	'	-8,100,000	'	'	'	'	'	'
Additional paid in capital	'	'	5,058,000	'	'	'	'	'	'
Sale of common stock	'	'	38,078,000	'	'	'	'	'	'
Acquisition of additional interest in Engineering S. A	'	'	-907,000	'	'	'	'	'	'
Treasury stock acquired	'	'	-538,000	'	'	'	'	'	'
Hill International, Inc. Stockholders - Stockholders' equity at the end of the period	164,735,000	'	164,735,000	'	'	'	'	'	'
Noncontrolling Interest - Stockholders' equity at the beginning of the period	'	'	11,887,000	'	'	'	'	'	'
Net earnings	351,000	386,000	1,089,000	1,356,000	'	'	'	'	'
Other comprehensive earnings	'	'	-762,000	'	'	'	'	'	'
Comprehensive earnings	-598,000	-139,000	327,000	-451,000	'	'	'	'	'
Acquisition of additional interest in Engineering S. A	'	'	-2,649,000	'	'	'	'	'	'
Noncontrolling Interest - Stockholders' equity at the end of the period	9,392,000	'	9,392,000	'	'	'	'	'	'
Number of shares of common stock sold	'	'	9,546,629	'	'	'	'	'	'
Stockholders' Equity	'	'	'	'	'	'	'	'	'
Shares issued in connection with acquisitions	'	'	'	'	'	'	171,308	171,308	171,308
Aggregate amount of shares issued in connection with acquisitions	'	'	'	'	'	'	618,000	618,000	618,000
Options exercised on a cashless basis (in shares)	'	'	'	'	'	200,000	'	'	'
Options exercise price (in dollars per share)	'	'	$3	'	'	$2.70	'	'	'
Withheld shares as payment for the options (in shares)	'	'	'	'	'	112,788	'	'	'
Shares received from transaction	'	'	'	'	'	87,212	'	'	'
Cash proceeds received from the exercise of stock options	'	'	1,032,000	'	'	'	'	'	'
Number of mandatory prepayments	'	'	'	'	2	'	'	'	'
Mandatory prepayment amount	'	'	'	'	$9,522,402	'	'	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Effective income tax rate (as a percent)	-78.90%	-6.50%	-614.90%	48.40%	'
Interest paid as part of termination of debt	$10,820,000	'	'	'	'
Reversal for uncertain tax position based on settlement of prior year tax positions related to a foreign jurisdiction	0	2,473,000	2,514,000	2,473,000	'
Reserve for uncertain tax positions	840,000	'	840,000	'	2,933,000
Increase in reserve for uncertain tax positions related to tax positions taken in foreign jurisdictions	'	'	420,000	'	'
Potential interest and penalties related to uncertain tax positions	592,000	'	592,000	'	'
Components of (loss) earnings before income taxes	'	'	'	'	'
Earnings (loss) before income taxes	-4,815,000	2,763,000	-882,000	8,234,000	'
Income tax (benefit) expense	'	'	'	'	'
Income tax expense (benefit)	3,800,000	-179,000	5,424,000	3,983,000	'
Reconciliation of income taxes based on the statutory U.S. federal income tax and the Company's effective income tax rate	'	'	'	'	'
Income tax expense resulting from adjustments	206,000	-105,000	250,000	40,000	'
U.S. Tax	'	'	'	'	'
Components of (loss) earnings before income taxes	'	'	'	'	'
Earnings (loss) before income taxes	-16,640,000	-6,123,000	-32,137,000	-18,713,000	'
Foreign Tax	'	'	'	'	'
Components of (loss) earnings before income taxes	'	'	'	'	'
Earnings (loss) before income taxes	11,825,000	8,886,000	31,255,000	26,947,000	'
Income tax (benefit) expense	'	'	'	'	'
Income tax expense (benefit)	$3,800,000	($179,000)	$5,424,000	$3,983,000	'

Business_Segment_Information_D

Business Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue	'	'	'	'
Consulting Fee Revenue	$145,324,000	$130,181,000	$427,088,000	$381,164,000
Consulting fee revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
Total Revenue	161,491,000	147,194,000	471,143,000	431,731,000
Total revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
Project Management	'	'	'	'
Revenue	'	'	'	'
Consulting Fee Revenue	106,969,000	99,583,000	317,278,000	293,560,000
Consulting fee revenue (as a percent)	73.60%	76.50%	74.30%	77.00%
Total Revenue	121,746,000	115,533,000	356,959,000	340,700,000
Total revenue (as a percent)	75.40%	78.50%	75.80%	78.90%
Construction Claims	'	'	'	'
Revenue	'	'	'	'
Consulting Fee Revenue	38,355,000	30,598,000	109,810,000	87,604,000
Consulting fee revenue (as a percent)	26.40%	23.50%	25.70%	23.00%
Total Revenue	$39,745,000	$31,661,000	$114,184,000	$91,031,000
Total revenue (as a percent)	24.60%	21.50%	24.20%	21.10%

Business_Segment_Information_D1

Business Segment Information (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Profit:	'	'	'	'
Operating Profit	$11,297	$8,252	$25,952	$25,491
Operating segment | Project Management	'	'	'	'
Operating Profit:	'	'	'	'
Operating Profit	12,960	11,290	37,121	36,980
Operating segment | Construction Claims	'	'	'	'
Operating Profit:	'	'	'	'
Operating Profit	5,269	3,806	10,941	9,629
Corporate	'	'	'	'
Operating Profit:	'	'	'	'
Operating Profit	($6,932)	($6,844)	($22,110)	($21,118)

Business_Segment_Information_D2

Business Segment Information (Details 3) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Depreciation and Amortization Expense	'	'	'	'
Depreciation and amortization expenses	$2,412	$2,725	$7,276	$7,921
Operating segment	'	'	'	'
Depreciation and Amortization Expense	'	'	'	'
Depreciation and amortization expenses	2,358	2,671	7,114	7,748
Operating segment | Project Management	'	'	'	'
Depreciation and Amortization Expense	'	'	'	'
Depreciation and amortization expenses	1,718	1,930	5,137	5,666
Operating segment | Construction Claims	'	'	'	'
Depreciation and Amortization Expense	'	'	'	'
Depreciation and amortization expenses	640	741	1,977	2,082
Corporate	'	'	'	'
Depreciation and Amortization Expense	'	'	'	'
Depreciation and amortization expenses	$54	$54	$162	$173

Business_Segment_Information_D3

Business Segment Information (Details 4) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	$145,324,000	$130,181,000	$427,088,000	$381,164,000
Consulting fee revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
Total Revenue	161,491,000	147,194,000	471,143,000	431,731,000
Total revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
U.S./Canada	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	32,228,000	31,197,000	93,227,000	92,472,000
Consulting fee revenue (as a percent)	22.20%	24.00%	21.80%	24.30%
Total Revenue	43,804,000	44,204,000	122,127,000	131,430,000
Total revenue (as a percent)	27.10%	30.00%	25.90%	30.40%
Latin America	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	10,503,000	11,329,000	32,315,000	36,385,000
Consulting fee revenue (as a percent)	7.20%	8.70%	7.60%	9.50%
Total Revenue	10,535,000	11,429,000	32,577,000	36,677,000
Total revenue (as a percent)	6.50%	7.80%	6.90%	9.00%
Europe	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	18,950,000	18,211,000	58,337,000	57,888,000
Consulting fee revenue (as a percent)	13.00%	14.00%	13.70%	15.20%
Total Revenue	20,266,000	19,556,000	62,160,000	61,471,000
Total revenue (as a percent)	12.50%	13.30%	13.20%	14.20%
Middle East	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	68,043,000	56,588,000	200,045,000	161,065,000
Consulting fee revenue (as a percent)	46.80%	43.50%	46.80%	42.30%
Total Revenue	70,218,000	57,804,000	207,691,000	165,492,000
Total revenue (as a percent)	43.50%	39.30%	44.10%	38.30%
Africa	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	5,580,000	6,735,000	17,864,000	16,165,000
Consulting fee revenue (as a percent)	3.80%	5.20%	4.20%	4.20%
Total Revenue	6,480,000	7,637,000	20,576,000	18,733,000
Total revenue (as a percent)	4.00%	5.20%	4.40%	4.30%
Asia/Pacific	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	10,020,000	6,121,000	25,300,000	17,189,000
Consulting fee revenue (as a percent)	7.00%	4.60%	5.90%	4.50%
Total Revenue	10,188,000	6,564,000	26,012,000	17,928,000
Total revenue (as a percent)	6.40%	4.40%	5.50%	4.30%
U.S.	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	31,309,000	30,334,000	90,533,000	89,792,000
Consulting fee revenue (as a percent)	21.50%	23.30%	21.20%	23.60%
Total Revenue	42,876,000	43,327,000	119,378,000	128,652,000
Total revenue (as a percent)	26.60%	29.40%	25.30%	29.80%
Non - U.S.	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	114,015,000	99,847,000	336,555,000	291,372,000
Consulting fee revenue (as a percent)	78.50%	76.70%	78.80%	76.40%
Total Revenue	118,615,000	103,867,000	351,765,000	303,079,000
Total revenue (as a percent)	73.40%	70.60%	74.70%	70.20%
Non - U.S. | Geographic concentration risk	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Number of countries	'	'	'	0
Non - U.S. | Consulting fee revenue | Geographic concentration risk	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Number of countries	0	0	0	0
Non - U.S. | Total revenue | Geographic concentration risk	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Number of countries	0	0	0	'
United Arab Emirates	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	18,666,000	16,017,000	52,385,000	50,485,000
Consulting fee revenue (as a percent)	12.80%	12.30%	12.30%	13.20%
Total Revenue	19,112,000	16,182,000	53,352,000	'
Total revenue (as a percent)	11.80%	11.00%	11.30%	'
Oman	'	'	'	'
Consulting Fee Revenue by Geographic Region	'	'	'	'
Consulting Fee Revenue	16,098,000	14,667,000	50,175,000	'
Consulting fee revenue (as a percent)	11.10%	11.30%	11.70%	'
Total Revenue	'	'	$53,773,000	'
Total revenue (as a percent)	'	'	11.40%	'

Business_Segment_Information_D4

Business Segment Information (Details 5) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Consulting Fee Revenue and Total Revenue By Client Type	'	'	'	'
Consulting Fee Revenue	$145,324,000	$130,181,000	$427,088,000	$381,164,000
Consulting fee revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
Total Revenue	161,491,000	147,194,000	471,143,000	431,731,000
Total revenue (as a percent)	100.00%	100.00%	100.00%	100.00%
U.S. federal government	'	'	'	'
Consulting Fee Revenue and Total Revenue By Client Type	'	'	'	'
Consulting Fee Revenue	4,562,000	3,722,000	195,565,000	186,583,000
Consulting fee revenue (as a percent)	3.10%	2.90%	45.80%	49.00%
Total Revenue	5,894,000	4,253,000	13,763,000	13,436,000
Total revenue (as a percent)	3.60%	2.90%	2.90%	3.10%
U.S. state, regional and local governments	'	'	'	'
Consulting Fee Revenue and Total Revenue By Client Type	'	'	'	'
Consulting Fee Revenue	19,989,000	18,539,000	165,325,000	129,608,000
Consulting fee revenue (as a percent)	13.80%	14.20%	38.70%	34.00%
Total Revenue	28,627,000	24,901,000	74,456,000	76,822,000
Total revenue (as a percent)	17.70%	16.90%	15.80%	17.80%
Foreign governments	'	'	'	'
Consulting Fee Revenue and Total Revenue By Client Type	'	'	'	'
Consulting Fee Revenue	54,361,000	47,516,000	55,029,000	53,360,000
Consulting fee revenue (as a percent)	37.40%	36.50%	12.90%	14.00%
Total Revenue	57,825,000	49,501,000	175,490,000	135,426,000
Total revenue (as a percent)	35.80%	33.60%	37.20%	31.40%
Private sector	'	'	'	'
Consulting Fee Revenue and Total Revenue By Client Type	'	'	'	'
Consulting Fee Revenue	66,412,000	60,404,000	11,169,000	11,613,000
Consulting fee revenue (as a percent)	45.70%	46.40%	2.60%	3.00%
Total Revenue	$69,145,000	$68,539,000	$207,434,000	$206,047,000
Total revenue (as a percent)	42.90%	46.60%	44.10%	47.70%

Business_Segment_Information_D5

Business Segment Information (Details 6) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	$11,061	$10,613
U.S./Canada	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	3,333	3,837
Latin America	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	1,487	1,351
Europe	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	1,758	2,575
Middle East	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	3,350	2,167
Africa	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	556	182
Asia/Pacific	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	577	501
U.S.	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	3,333	3,837
Non - U.S.	'	'
Property, Plant and Equipment, Net by Geographic Location	'	'
Property, Plant and Equipment, Net by Geographic Location	$7,728	$6,776

Customer_Concentrations_Detail

Customer Concentrations (Details)	3 Months Ended		9 Months Ended		12 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	Consulting fee revenue	Consulting fee revenue	Consulting fee revenue	Accounts receivable	Accounts receivable	Total revenue	Total revenue	Total revenue	Total revenue	Total revenue	Total revenue
	Customer concentration	Customer concentration	Customer concentration	Customer concentration	Customer concentration	Customer concentration	Customer concentration	Contracts with U.S. federal government agencies	Contracts with U.S. federal government agencies	Contracts with U.S. federal government agencies	Contracts with U.S. federal government agencies
	Oman	Oman	Oman	Libya	Libya	Oman	Oman
	client	client	client	client	client	client	client
Concentrations of Credit Risk	'	'	'	'	'	'	'	'	'	'	'
Number of clients	1	1	1	1	1	1	1	'	'	'	'
Percentage of concentration risk	10.00%	11.00%	11.00%	20.00%	25.00%	10.00%	10.00%	4.00%	3.00%	3.00%	3.00%

Commitments_and_Contingencies_

Commitments and Contingencies (Details)

9 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Jul. 31, 2014

Sep. 30, 2014

Mar. 07, 2014

Mar. 07, 2014

Feb. 28, 2014

Dec. 24, 2014

Dec. 18, 2014

Dec. 24, 2014

Sep. 30, 2014

Sep. 30, 2013

Oct. 15, 2014

Oct. 15, 2014

Feb. 28, 2011

Apr. 30, 2014

Sep. 30, 2014

USD ($)

USD ($)

BCA

BCA

CPI

CPI

CPI

CPI

CPI

CPI

Plaintiff

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

Hill Spain

USD ($)

USD ($)

USD ($)

USD ($)

Subsequent events

Subsequent events

Subsequent events

USD ($)

USD ($)

Subsequent events

Subsequent events

ESA

ESA

ESA

USD ($)

USD ($)

USD ($)

BRL

shareholder

BRL

Acquisition-Related Contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Possible loss contingency

'

'

'

'

'

'

'

'

'

'

$8,771,000

'

'

'

'

'

'

Invoices accrued plus interest

'

'

'

'

'

'

'

'

'

'

2,340,000

'

'

'

'

'

'

Interest accrued

'

'

'

'

'

'

'

'

'

'

448,000

'

'

'

'

'

'

Ownership interest acquired (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60.00%

'

'

Increase in Other Current Liabilities

-2,711,000

3,154,000

'

'

'

'

'

'

'

'

'

'

'

7,838,000

'

'

'

Reduction of noncontrolling interest in connection with acquisition of an additional interest

2,649,000

'

'

'

'

'

'

'

'

'

'

-1,094,000

2,649,000

5,839,000

'

'

'

Reduction in additional paid in capital through equity transaction

'

'

'

'

'

'

'

'

'

'

'

'

907,000

1,999,000

'

'

'

Multiple of earnings for determining purchase price of minority shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7

'

'

Call option Purchase price premium if exercised by Gerens Hill (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

Call/put option exercise period after audited financial statements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 months

'

'

Number of minority shareholders who exercised Put Option

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

Value of shares purchased on exercise of put options

3,556,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,838,000

Minority shareholders ownership percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

72.00%

Shares issued in connection with acquisitions

'

'

'

'

171,308

171,308

171,308

'

'

'

'

'

'

'

'

'

'

Value of shares issued in connection with acquisitions

'

'

'

'

618,000

618,000

618,000

350,000

'

'

'

'

'

'

'

'

'

Contingent consideration arrangement, evaluation period

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Potential additional payment

'

'

'

902,000

'

'

'

'

'

500,000

'

'

'

'

'

'

'

Amount specified under acquisition agreement in excess of which payment for equity has to be made

'

'

'

'

600,000

'

'

'

'

'

'

'

'

'

'

'

'

Number of trading days to determined the average closing price of the common stock

'

'

'

'

'

'

'

'

'10 days

'

'

'

'

'

'

'

'

Percentage of operating profit for calculation of contingent consideration

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

Threshold of operating profit for calculation of contingent consideration

'

'

'

'

'

'

'

'

'

$1,000,000

'

'

'

'

'

'

'

Subsequent_Events_Details

Subsequent Events (Details) (Subsequent events, Cadogans, GBP £)	0 Months Ended
	Oct. 31, 2014	Oct. 31, 2014
		item
Subsequent events | Cadogans	'	'
Subsequent event	'	'
Number of professionals	'	30
Total consideration for acquisition	£ 1,800,000	'
Time for asset valuation	'30 days	'
Initial cash payment	1,000,000	'
Acquisition consideration payable	600,000	'
Contingent consideration arrangement, evaluation period	'2 years	'
Contingent consideration, minimum	'	0
Contingent consideration, maximum	'	£ 200,000