ICF International (ICFI) 10-K 27 Feb 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 20, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	ICF International, Inc.
Document Type	10-K
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		19,435,765
Entity Public Float			$650,000,000
Amendment Flag	FALSE
Entity Central Index Key	1362004
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current Assets
Cash	$12,122	$8,953
Contract receivables, net	260,254	205,062
Prepaid expenses and other	10,338	7,847
Income tax receivable	5,715	4,482
Total current assets	288,429	226,344
Total property and equipment, net	43,241	30,214
Other assets:
Goodwill	687,778	418,839
Other intangible assets, net	76,707	12,239
Restricted cash	1,478	1,864
Other assets	12,707	11,414
Total Assets	1,110,340	700,914
Current Liabilities
Accounts payable	65,755	45,544
Accrued salaries and benefits	56,314	45,994
Accrued expenses and other current liabilities	42,308	32,256
Deferred revenue	31,554	20,282
Deferred income taxes	7,312	6,144
Total Current Liabilities	203,243	150,220
Long-term Liabilities:
Long-term debt	350,052	40,000
Deferred rent	19,997	12,912
Deferred income taxes	27,886	10,780
Other	8,473	12,911
Total Liabilities	609,651	226,823
Commitments and Contingencies
Stockholders’ Equity
Preferred stock, par value $.001 per share; 5,000,000 shares authorized; none issued
Common stock, $.001 par value; 70,000,000 shares authorized; 21,035,654 and 20,617,270 shares issued; and 19,430,154 and 19,764,634 shares outstanding as of December 31, 2014, and December 31, 2013, respectively	21	21
Additional paid-in capital	267,206	250,698
Retained earnings	285,937	245,907
Treasury stock	-49,994	-21,545
Accumulated other comprehensive loss	-2,481	-990
Total Stockholders’ Equity	500,689	474,091
Total Liabilities and Stockholders’ Equity	$1,110,340	$700,914

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Preferred stock par value (in Dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in Dollars per share)	$0.00	$0.00
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	21,035,654	20,617,270
Common stock, shares outstanding	19,430,154	19,764,634

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Gross Revenue	$1,050,134	$949,303	$937,133
Direct Costs	654,946	591,516	583,195
Operating costs and expenses
Indirect and selling expenses	302,020	272,387	263,878
Depreciation and amortization	13,369	11,238	9,789
Amortization of intangible assets	10,437	9,477	14,089
Total operating costs and expenses	325,826	293,102	287,756
Operating Income	69,362	64,685	66,182
Interest expense	-4,254	-2,447	-3,946
Other expense	-958	-12	-325
Income Before Income Taxes	64,150	62,226	61,911
Provision for Income Taxes	24,120	22,896	23,836
Net Income	40,030	39,330	38,075
Earnings per Share:
Basic (in Dollars per share)	$2.04	$1.99	$1.94
Diluted (in Dollars per share)	$2	$1.95	$1.91
Weighted-average Common Shares Outstanding:
Basic (in Shares)	19,608,000	19,755,000	19,663,000
Diluted (in Shares)	19,997,000	20,186,000	19,957,000
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	-1,491	251	-436
Comprehensive income, net of tax	$38,539	$39,581	$37,639

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
In Thousands, except Share data
Balance as of at Dec. 31, 2011	$20	$227,577	$168,502	($2,266)	($805)	$393,028
Balance as of (in Shares) at Dec. 31, 2011	19,792,000			95,000
Net income			38,075			38,075
Other comprehensive income (loss)					-436	-436
Equity compensation		8,770				8,770
Exercise of stock options		78				78
Exercise of stock options (in Shares)	11,000
Issuance of shares pursuant to vesting of restricted stock units (in Shares)	231,000
Net payments for stock issuances and buybacks		33		-11,602		-11,569
Net payments for stock issuances and buybacks (in Shares)	-475,000			517,000
Tax impact of stock option exercises and award vesting		804				804
Balance as of at Dec. 31, 2012	20	237,262	206,577	-13,868	-1,241	428,750
Balance as of (in Shares) at Dec. 31, 2012	19,559,000			612,000
Net income			39,330			39,330
Other comprehensive income (loss)					251	251
Equity compensation		8,786		105		8,891
Exercise of stock options	1	3,102				3,103
Exercise of stock options (in Shares)	159,000
Issuance of shares pursuant to vesting of restricted stock units (in Shares)	294,000			-5,000
Net payments for stock issuances and buybacks		335		-7,782		-7,447
Net payments for stock issuances and buybacks (in Shares)	-247,000			246,000
Tax impact of stock option exercises and award vesting		1,213				1,213
Balance as of at Dec. 31, 2013	21	250,698	245,907	-21,545	-990	474,091
Balance as of (in Shares) at Dec. 31, 2013	19,765,000			853,000
Net income			40,030			40,030
Other comprehensive income (loss)					-1,491	-1,491
Equity compensation		10,680		328		11,008
Exercise of stock options		1,831				1,831
Exercise of stock options (in Shares)	85,000
Issuance of shares pursuant to vesting of restricted stock units (in Shares)	333,000
Net payments for stock issuances and buybacks		454		-28,777		-28,323
Net payments for stock issuances and buybacks (in Shares)	-753,000			753,000
Tax impact of stock option exercises and award vesting		3,543				3,543
Balance as of at Dec. 31, 2014	$21	$267,206	$285,937	($49,994)	($2,481)	$500,689
Balance as of (in Shares) at Dec. 31, 2014	19,430,000			1,606,000

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows from Operating Activities
Net income	$40,030	$39,330	$38,075
Adjustments to reconcile net income to net cash provided by operating activities:
Bad debt expense	272	112	336
Deferred income taxes	4,071	2,434	13,621
Non-cash equity compensation	11,008	8,891	8,770
Depreciation and amortization	23,806	20,715	23,878
Deferred rent	2,685	2,606	3,594
Other adjustments, net	-3,015	1,972	793
Changes in operating assets and liabilities, net of the effect of acquisitions:
Contract receivables	-2,464	233	12,129
Prepaid expenses and other assets	-1,743	-3,633	-533
Accounts payable	9,424	390	3,164
Accrued salaries and benefits	4,286	3,753	-4,198
Accrued expenses	683	-1,091	2,229
Deferred revenue	-2,099	-2,407	-2,638
Income tax receivable and payable	-6,453	6,749	-10,451
Restricted cash	387	150	-807
Other liabilities	-1,718	609	-201
Net Cash Provided by Operating Activities	79,160	80,813	87,761
Cash Flows from Investing Activities
Capital expenditures for property and equipment and capitalized software	-12,974	-14,161	-13,561
Payments for business acquisitions, net of cash received	-347,871	-4,763	-9,974
Net Cash Used in Investing Activities	-360,845	-18,924	-23,535
Cash Flows from Financing Activities
Advances from working capital facilities	733,032	139,215	172,270
Payments on working capital facilities	-422,980	-204,215	-212,270
Debt issue costs	-1,245		-1,955
Proceeds from exercise of options	1,831	3,103	78
Tax benefits of stock option exercises and award vesting	3,543	1,213	804
Net payments for stockholder issuances and buybacks	-28,323	-7,447	-11,569
Net Cash Provided by (Used in) Financing Activities	285,858	-68,131	-52,642
Effect of Exchange Rate Changes on Cash	-1,004	470	-956
Increase (Decrease) in Cash	3,169	-5,772	10,628
Cash, beginning of period	8,953	14,725	4,097
Cash, end of period	12,122	8,953	14,725
Cash paid during the period for:
Interest	2,728	2,459	3,243
Income taxes	24,335	13,670	20,377
Non-cash investing and financing transactions:
Fair value of contingent consideration payable in connection with acquisition		$2,842

Note_A_Basis_of_Presentation_a

Note A - Basis of Presentation and Nature of Operations	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE A—BASIS OF PRESENTATION AND NATURE OF OPERATIONS
	Basis of Presentation and Nature of Operations
	The accompanying consolidated financial statements include the accounts of ICF International, Inc. (“ICFI”), and its subsidiary, ICF Consulting Group, Inc. (“Consulting,” and together with ICFI, “the Company”). Consulting is a wholly owned subsidiary of ICFI. ICFI is a holding company with no operations or assets other than its investment in the common stock of Consulting. All other subsidiaries of the Company are wholly owned by Consulting. All significant intercompany transactions and balances have been eliminated.
	Nature of Operations
	The Company provides management, technology, and policy professional services in the areas of energy, environment, and infrastructure; health, social programs, and consumer/financial; and public safety and defense. The Company’s major clients are U.S. federal government departments and agencies, most significantly Department of Health and Human Services (“HHS”), Department of State and Department of Defense. We also serve U.S. state and local government departments and agencies; international governments; and commercial clients worldwide, such as airlines, airports, electric and gas utilities, oil companies, hospitals and health-related companies, banks and other financial services companies, travel and hospitality, non-profits/associations, law firms, manufacturing, retail, and distribution. The Company offers a full range of services to these clients, including strategy, analysis, program management, and information technology solutions that combine experienced professional staff, industry and institutional knowledge, and analytical methods.
	The Company, incorporated in Delaware, is headquartered in Fairfax, Virginia. It maintains offices throughout the world, including over 55 offices in the United States and over 15 offices in key markets outside the United States, including offices in the United Kingdom, Belgium, China, India and Canada.
	Reclassifications
	Certain amounts in the 2013 and 2012 consolidated financial statements have been reclassified to conform to the current year presentation.

Note_B_Summary_of_Significant_

Note B - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	NOTE B—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Revenue Recognition
	The Company recognizes revenue when persuasive evidence of an arrangement exists, services have been rendered, the contract price is fixed or determinable, and collectability is reasonably assured. The Company enters into three types of contracts: time-and-materials, cost-based, and fixed-price.
		•		Time-and-Materials Contracts. Revenue for time-and-materials contracts is recorded on the basis of allowable labor hours worked multiplied by the contract-defined billing rates, plus the costs of other items used in the performance of the contract. Profits and losses on time-and-materials contracts result from the difference between the cost of services performed and the contract-defined billing rates for these services.
		•		Cost-Based Contracts. Revenue under cost-based contracts is recognized as costs are incurred. Applicable estimated profit, if any, is included in earnings in the proportion that incurred costs bear to total estimated costs. Incentives, award fees, or penalties related to performance are also considered in estimating revenue and profit rates based on actual and anticipated awards, taking into consideration factors such as the Company’s prior award experience and communications with the customer regarding performance.
		•		Fixed-Price Contracts. Revenue for fixed-price contracts is recognized when earned, generally as work is performed. Services performed vary from contract to contract and are not always uniformly performed over the term of the arrangement. We recognize revenue in a number of different ways on fixed-price contracts, including:
		•		Proportional Performance: Revenue on certain fixed-price contracts is recorded each period based upon certain contract performance measures (labor hours, labor costs, or total costs) incurred expressed as a proportion of a total project estimate. Thus, labor hours, labor costs, or total contract costs incurred to date are compared with the total estimate for these items at completion. Performance is based on the ratio of the incurred hours or costs to the total estimate. Progress on a contract is monitored regularly to ensure that revenue recognized reflects project status. When hours or costs incurred are used as the basis for revenue recognition, the hours or costs incurred represent a reasonable surrogate for output measures of contract performance, including the presentation of deliverables to the client. Clients are obligated to pay as services are performed, and in the event that a client cancels the contract, payment for services performed through the date of cancellation is negotiated with the client.
		•		Contractual Outputs: Revenue on certain fixed-price contracts is recognized based upon outputs completed to date expressed as a percentage of total outputs required in the contract or based upon units delivered to the customer multiplied by the contract-defined unit price.
		•		Straight-Line: When services are performed or are expected to be performed consistently throughout an arrangement, or when we are compensated on a retainer or fixed-fee basis and thus regardless of level of effort, revenue is recognized ratably over the period benefited.
		•		Completed Contract: Revenue and costs on certain fixed-price contracts are recognized at completion if the final act is so significant to the arrangement that value is deemed to be transferred only at completion.
	Revenue recognition requires us to use judgment relative to assessing risks, estimating contract revenue and costs or other variables, and making assumptions for scheduling and technical issues. Due to the size and nature of many of our contracts, the estimation of revenue and estimates at completion can be complicated and are subject to many variables. Contract costs include labor, subcontractor costs, and other direct costs, as well as an allocation of allowable indirect costs. At times, we must also make assumptions regarding the length of time to complete the contract because costs include expected increases in wages, prices for subcontractors, and other direct costs. From time to time, facts develop that require us to revise our estimated total costs or hours and thus the associated revenue on a contract. To the extent that a revised estimate affects contract profit or revenue previously recognized, we record the cumulative effect of the revision in the period in which the facts requiring the revision become known. A provision for the full amount of an anticipated loss on any type of contract is recognized in the period in which it becomes probable and can be reasonably estimated. As a result, operating results could be affected by revisions to prior accounting estimates.
	Our contractual arrangements are evaluated to assess whether revenue should be recognized on a gross versus net basis. Management’s assessment when determining gross versus net revenue recognition is based on several factors such as whether we serve as the primary service provider, have autonomy in selecting subcontractors, or have credit risk; all of which are primary indicators that we serve as the principal to the transaction and revenue is recognized on a gross basis. When such indicators are not present and we are primarily functioning as an agent under an arrangement, revenue is recognized on a net basis.
	The approximate percentage of revenue by contract type was as follows:
			Year ended December 31,
			2014			2013			2012
	Time-and-materials			47	%		52	%		49	%
	Fixed-price			34	%		29	%		30	%
	Cost-based			19	%		19	%		21	%
	Total			100	%		100	%		100	%
	Payments to the Company on cost-based contracts with the U.S. government are provisional payments subject to adjustment upon audit by the government. Such audits have been finalized through December 31, 2006, and any adjustments have been immaterial. Contract revenue for subsequent periods has been recorded in amounts that are expected to be realized upon final audit and settlement of costs in those years.
	The Company generates invoices to clients in accordance with the terms of the applicable contract, which may not be directly related to the performance of services. Unbilled receivables are invoiced based upon the achievement of specific events as defined by each contract, including deliverables, timetables, and incurrence of certain costs. Unbilled receivables are classified as a current asset. Advanced billings to clients in excess of revenue earned are recorded as deferred revenue until the revenue recognition criteria are met. Reimbursements of out-of-pocket expenses are included in revenue with corresponding costs incurred by us included in the cost of revenue.
	The Company may proceed with work based upon client direction prior to the completion and signing of formal contract documents. We have a review process for approving any such work. Revenue associated with such work is recognized only when it can reliably be estimated and realization is probable. The Company bases its estimates on a variety of factors, including previous experiences with the client, communications with the client regarding funding status, and its knowledge of available funding for the contract.
	Approximately 61%, 67%, and 70% of the Company’s revenue for the years 2014, 2013, and 2012, respectively, were derived under prime contracts and subcontracts with agencies and departments of the U.S. federal government and state and local governments. For the years ending December 31, 2014, 2013, and 2012, our largest client was HHS, the various branches of which accounted for approximately 17% or $182.3 million, 18% or $173.7 million, and 19% or $180.1 million, respectively, of the Company’s revenue. The accounts receivable due from HHS contracts as of December 31, 2014 and 2013 were approximately $14.5 million and $11.8 million, respectively.
	The Company’s international operations offer services to both commercial and non-U.S. government customers. Revenue is attributed to location based on the geographic areas to which a contract is awarded. The Company’s international revenue as a percentage of total revenue was approximately 12%, 9%, and 7% for the years ended December 31, 2014, 2013 and 2012.
	Cash and Cash Equivalents
	The Company considers cash on deposit and all highly liquid investments with original maturities of three months or less when purchased to be cash and cash equivalents.
	Restricted Cash
	The Company has restricted cash representing amounts held in escrow accounts and/or not readily available due to contractual restrictions.
	Allowance for Doubtful Accounts
	The Company considers a number of factors in its estimate of allowance for doubtful accounts, including the customer’s financial condition, historical collection experience, and other factors that may bear on collectability of the receivables. The Company writes off contract receivables when such amounts are determined to be uncollectible. Losses have historically been within management’s expectations.
	Property and Equipment
	Property and equipment are carried at cost and are depreciated using the straight-line method over their estimated useful lives, which range from two to seven years. Leasehold improvements are amortized on a straight-line basis over the shorter of the economic life of the improvement or the related lease term. Assets acquired in acquisitions are recorded at fair value.
	The Company is required to review long-lived assets and identifiable intangibles subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less cost to sell.
	Goodwill and Other Intangible Assets
	The purchase price of an acquired business is allocated to the tangible assets and separately identifiable intangible assets acquired less liabilities assumed based upon their respective fair values, with the excess recorded as goodwill. Goodwill and intangible assets acquired in a business combination and determined to have an indefinite useful life are not amortized, but instead reviewed for impairment annually, or more frequently if impairment indicators arise. Intangible assets with estimable useful lives must be amortized over such lives and reviewed for impairment.
	The Company performs its annual goodwill impairment review as of September 30 of each year. For the purposes of performing this review, the Company has concluded that it is one reporting unit. For the annual impairment review as of September 30, 2014, a two-step goodwill impairment test was performed which includes a comparison of the fair value of the reporting unit to the carrying value. If the estimated fair value of the reporting unit is less than the carrying value, a second calculation is required to measure the amount of goodwill impairment loss to be recognized for that reporting unit, if any.
	The Company estimates the fair value of its one reporting unit using a market-based approach, which includes certain premiums. The Company conducts a market comparison in which it assesses implied control premiums paid in excess of market price in acquisitions of publicly-traded companies occurring within the past four years of its review. In its comparison, the Company takes into consideration the market, industry, geographic location, and other relevant information of such companies in order to identify companies similar to it. The implied control premiums for each of the acquisitions considered are calculated by comparing the enterprise values of the target companies one month prior to the transaction to their purchase prices on an enterprise value basis. Based on an analysis of the implied control premiums for the four-year period, the Company selects an appropriate control premium based on these factors and applies it to its implied enterprise value derived from the Company’s market capitalization as of the impairment test date. The Company views premiums paid in excess of market price to be derived from potential synergies and benefits gained as a result of the acquisition and, accordingly, the Company believes the inclusion of these premiums in its determination of fair value is appropriate.
	Based upon management’s most recent review, the Company determined that the estimated fair value of the Company’s one reporting unit was not less than the carrying value and that no goodwill impairment charge was required as of September 30, 2014. Historically, the Company has recorded no goodwill impairment charges.
	The Company is required to review long-lived assets and certain identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less cost to sell.
	Capitalized Software
	The Company capitalizes eligible costs to develop enhancements and upgrades to internal-use software that are incurred subsequent to the preliminary project stage. Amortization expense is recorded on a straight-line basis over the expected economic life, typically five years. During the years ended December 31, 2014, 2013 and 2012, the costs capitalized for the development of internal- use software were not material to our consolidated financial statements.
	Deferred Rent
	The Company recognizes rent expense on a straight-line basis over the term of each lease. Lease incentives or abatements received at or near the inception of leases are accrued and amortized ratably over the life of the lease.
	Stock-basedCompensation
	The Company recognizes stock-based compensation expense related to share-based payments to employees, including grants of employee stock options, restricted stock awards, restricted stock units (“RSUs”) and cash-settled restricted stock units (“CSRSUs”), on a straight-line basis over the requisite service period, which is generally the vesting period. Compensation expense is based on the estimated fair value of these instruments and the estimated number of shares we ultimately expect will vest. Non-employee director awards do not include vesting conditions and therefore are expensed when issued.
	The fair value of stock options, restricted stock awards, RSUs and non-employee director awards is estimated based on the fair value of a share of common stock at the grant date. The Company has elected to use the Black-Scholes-Merton option pricing model to determine the fair value of stock options. CSRSUs are settled only in cash payments. The cash payment is based on the fair value of the Company’s stock price at the vesting date, calculated by multiplying the number of CSRSUs vested by the Company’s closing stock price on the vesting date. The payment is subject to a maximum payment cap and a minimum payment floor. The Company treats these awards as liability-classified awards, and therefore accounts for them at fair value estimated based on the closing price of the Company’s stock at the reporting date.
	Other Comprehensive Income (Loss)
	Other comprehensive income (loss) represents foreign currency translation adjustments arising from the use of differing exchange rates from period to period. The financial positions and results of operations of the Company’s foreign subsidiaries are based on the local currency as the functional currency and are translated to U.S. dollars for financial reporting purposes. Assets and liabilities of the subsidiaries are translated at the exchange rate in effect at each period-end. Income statement accounts are translated at the average rate of exchange prevailing during the period. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive income (loss) in stockholders’ equity. Gains and losses resulting from foreign currency transactions included in operations are not material for any of the periods presented.
	The activity included in other comprehensive income (loss) related to foreign currency translation adjustments for each period reported is summarized below:
			Year ended December 31,
			2014			2013			2012
	Foreign currency translation adjustments		$	(2,017	)	$	251		$	(436	)
	Realized losses reclassified into earnings(1)			526			—			—
	Other comprehensive (loss) income, net of tax		$	(1,491	)	$	251		$	(436	)
	(1)     For the year ended December 31, 2014, amount represents the reclassification of foreign currency translation adjustments from accumulated other comprehensive loss into earnings as a result of closing one of our international offices. Amount is included in the other (expense) income line item in the statements of comprehensive income.
	Fair Value of Financial Instruments
	The Company's financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses, and other current liabilities, are carried at cost, which the Company believes approximates their fair values at December 31, 2014 and 2013, due to their short maturities. The Company believes the carrying value of its lines of credit payable approximate the estimated fair value for debt with similar terms, interest rates, and remaining maturities currently available to companies with similar credit ratings at December 31, 2014 and 2013. The Company applies the provisions of ASC 820, Fair Value Measurements and Disclosures (“ASC 820,”) to its assets and liabilities that are required to be measured at fair value pursuant to other accounting standards, including contingent liabilities related to acquisitions and two foreign currency forward contract agreements not eligible for hedge accounting. The impact of the hedge to the consolidated financial statements was immaterial. The additional fair value disclosures are included in “Note L—Fair Value Measurement.”
	Income Taxes
	The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The Company evaluates its ability to benefit from all deferred tax assets and establishes valuation allowances for amounts it believes are not more likely than not to be realizable. For uncertain tax positions, the Company uses a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken. Income tax positions that meet the more-likely-than-not recognition threshold are measured in order to determine the tax benefit recognized in the financial statements. Penalties, if probable and reasonably estimable, and interest expense related to uncertain tax positions are not recognized as a component of income tax expense but recorded separately in indirect expenses.
	Treasury Shares
	Treasury shares are accounted for under the cost method.
	Segment
	The Company has concluded that it operates in one segment based upon the information used by its chief operating decision maker in evaluating the performance of its business and allocating resources. This single segment represents the Company’s core business, professional services for government and commercial clients. Although the Company describes multiple service offerings to three markets to provide a better understanding of the Company’s business operations, the Company does not manage its business or allocate resources based upon those service offerings or markets.
	Risks and Uncertainties
Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and contract receivables. The majority of the Company’s cash transactions are processed through one U.S. commercial bank. Cash held domestically in excess of daily requirements is used to reduce any amounts outstanding under the Company’s Credit Facility. As of December 31, 2014 and 2013, the Company held approximately $10.1 million and $5.3 million, respectively, of cash in foreign bank accounts. To date, the Company has not incurred losses related to cash and cash equivalents.
The Company’s contract receivables consist principally of contract receivables from agencies and departments of, as well as from prime contractors to, the federal government, other governments, and commercial organizations. The Company believes that this credit risk, with respect to contract receivables, is limited due to the credit worthiness of the U.S. government. The Company extends credit in the normal course of operations and does not require collateral from its clients.
The Company has historically been, and continues to be, heavily dependent upon contracts with the federal government and is subject to audit by agencies of the federal government. Such audits determine, among other things, whether an adjustment of invoices rendered to the government is appropriate under the underlying terms of the contracts. Management does not expect any significant adjustments as a result of government audits that will adversely affect the Company’s financial position.
Use of Estimates
The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.
Recent Accounting Pronouncements
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (the “ASU”). The ASU provides a single comprehensive revenue recognition framework and supersedes almost all existing revenue recognition guidance. Included in the new principles-based revenue recognition model are changes to the basis for deciding on the timing for revenue recognition. In addition, the standard expands and improves revenue disclosures. The ASU is effective for the Company in the first quarter of 2017 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. Early adoption of the ASU is not permitted. The Company is currently evaluating the impact of adopting the ASU.

Note_C_Contract_Receivables

Note C - Contract Receivables	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	NOTE C—CONTRACT RECEIVABLES
	Contract receivables consisted of the following at December 31:
		2014			2013
	Billed	$	162,976		$	102,995
	Unbilled		90,419			96,243
	Retainages		5,788			3,914
	Other		2,958			3,663
	Allowance for doubtful accounts		(1,887	)		(1,753	)
	Contract receivables, net	$	260,254		$	205,062
	Contract receivables, net of the established allowance, are stated at amounts expected to be realized in future periods. Unbilled receivables result from revenue that has been earned in advance of billing. Unbilled receivables can be invoiced at contractually defined intervals or milestones, as well as upon completion of the contract or government audits. The increase in billed receivables is primarily due to the recent acquisitions of Olson, Mostra and CityTech and the decrease in unbilled receivables is primarily due to the number of days in the related billing cycles at December 31, 2014 compared to December 31, 2013. The Company anticipates that the majority of unbilled receivables will be substantially billed and collected within one year, and therefore, classifies them as current assets in accordance with industry practice.

Note_D_Property_and_Equipment

Note D - Property and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	D—PROPERTY AND EQUIPMENT
	Property and equipment consisted of the following at December 31:
		2014			2013
	Leasehold improvements	$	19,097		$	9,224
	Software		31,364			27,677
	Furniture and equipment		23,466			17,127
	Computers		27,671			25,415
			101,598			79,443
	Accumulated depreciation and amortization		(58,357	)		(49,229	)
	Total property and equipment, net	$	43,241		$	30,214
	Depreciation expense for property and equipment for the years ended December 31, 2014, 2013, and 2012, was approximately $13.4 million, $11.2 million, and $9.8 million, respectively.

Note_E_Goodwill_and_Other_Inta

Note E - Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	NOTE E—GOODWILL AND OTHER INTANGIBLE ASSETS
	Goodwill
	The changes in the carrying amount of goodwill for the fiscal years ended December 31 were as follows:
		2014		2013
	Balance as of January 1	$	418,839	$	410,583
	Goodwill resulting from the GHK business combination		—		(101	)
	Goodwill resulting from the ECA business combination		141		8,357
	Goodwill resulting from the Mostra business combination		24,118		—
	Goodwill resulting from the CityTech business combination		19,563		—
	Goodwill resulting from the Olson business combination		225,117		—
	Balance as of December 31	$	687,778	$	418,839
	Other Intangible Assets
	Intangible assets are primarily amortized over periods ranging from approximately 1 to 10 years. The weighted-average period of amortization for all intangible assets as of December 31, 2014, is 8.5 years. The customer-related intangible assets related to the business combinations, which consist of customer contracts, backlog, and non-contractual customer relationships, are being amortized based on estimated cash flows and respective estimated economic benefit of the assets. The weighted-average period of amortization of the customer-related intangibles is 8.8 years. Intangible assets related to acquired developed technology are being amortized on an accelerated basis over a weighted-average period of 5.3 years. Marketing-related intangible assets are being amortized on a straight-line basis over a weighted-average period of 1.2 years. Other intangibles consisted of the following at December 31:
		2014
		Gross					Net
		Carrying		Accumulated			Carrying
		Value		Amortization			Value
	Customer-related	$	118,957	$	(46,703	)	$	72,254
	Developed technology		1,538		(494	)		1,044
	Marketing-related		4,262		(853	)		3,409
	Total intangible assets	$	124,757	$	(48,050	)	$	76,707
		2013
		Gross					Net
		Carrying		Accumulated			Carrying
		Value		Amortization			Value
	Customer-related	$	58,829	$	(47,301	)	$	11,528
	Developed technology		960		(249	)		711
	Total intangible assets	$	59,789	$	(47,550	)	$	12,239
	Aggregate amortization expense for the years ended December 31, 2014, 2013, and 2012, was approximately $10.4 million, $9.5 million, and $14.1 million, respectively. The estimated future amortization expense relating to intangible assets is as follows:
	Year ending December 31,
	2015	$	17,180
	2016		12,929
	2017		11,298
	2018		8,480
	2019		6,162
	Thereafter		20,658
		$	76,707

Note_F_Business_Combinations

Note F - Business Combinations	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	NOTE F—BUSINESS COMBINATIONS
	Olson
	On November 5, 2014, the Company completed the acquisition of OCO Holdings, Inc. (“Olson”), a leading provider of marketing technology and digital services based in Minneapolis, Minnesota. The aggregate purchase price of approximately $296.4 million in cash, which includes the estimated working capital adjustment required by the Merger Agreement, was funded by the Company’s Credit Facility. As contemplated by the Merger Agreement, Olson became a wholly-owned subsidiary of the Company. The acquisition expands our existing digital technology and strategic communications work and strengthens our ability to bring more integrated solutions to an expanded client base including multi-channel marketing initiatives across web, mobile, email, social, print, broadcast and off-premise platforms.
	The acquisition was accounted for under the purchase method. The preliminary allocation of the total purchase price to the tangible and intangible assets and liabilities of Olson is based on management’s preliminary estimate of fair value as of the acquisition date and is subject to revision until the purchase price adjustments and valuations of intangible assets and goodwill are finalized, which will occur prior to November 5, 2015. The Company engaged an independent valuation firm to assist management in the allocation of the purchase price to goodwill and to other acquired intangible assets. The excess of the purchase price over the estimated fair value of the net tangible assets acquired was approximately $289.9 million. The Company has allocated approximately $225.1 million to goodwill and $64.8 million to other intangible assets. The goodwill recorded as part of the acquisition primarily reflects the value of providing an established platform to leverage the Company’s existing digital interactive technologies and domain expertise, synergies expected to arise from providing end-to-end customer solutions to a combined client-base across all channels, as well as any intangible assets that do not qualify for separate recognition. The weighted average amortization period for the amount allocated to other intangible assets in total is 9.6 years from the acquisition date. The intangible assets consist of approximately $60.3 million of customer-related intangibles that are being amortized over 10.2 years from the acquisition date, $3.9 million of marketing-related intangibles that are being amortized over 1.2 years from the acquisition date, and $0.6 million of technology intangibles that are being amortized over 6.2 years from the acquisition date. Olson was a stock purchase for tax purposes; therefore, goodwill and amortization of other intangibles created via this acquisition are not deductible for income tax purposes. For the year ended December 31, 2014, Olson contributed net revenues of $23.0 million and net earnings of $2.2 million, excluding transaction-related acquisition costs of $1.6 million, as well as interest expense, amortization of intangible assets resulting from the acquisition, stock-based compensation expense, corporate allocations and integration costs.
	The preliminary purchase price allocation is summarized as follows (in thousands):
	Cash	$	8,816
	Contract receivables		36,879
	Other current and non-current assets		1,512
	Property and equipment		15,867
	Customer-related intangibles		60,338
	Marketing-related intangibles		3,947
	Developed technology intangibles		578
	Goodwill		225,117
	Total Assets		353,054
	Accounts payable		9,792
	Accrued expenses and other liabilities		12,989
	Accrued salaries and benefits		5,157
	Deferred revenue		9,742
	Deferred taxes and income tax payable		18,984
	Total Liabilities		56,664
	Net Assets	$	296,390
	Pro forma Information (Unaudited)
	The following unaudited condensed pro forma information presents combined financial information as if the acquisition of Olson had been effective at the beginning of fiscal year 2013. As a result, fiscal year 2014 represents the pro forma results for year two of the acquisition. The pro forma information includes adjustments reflecting changes in the amortization of intangibles, acquisition-related expense, stock-based compensation expense, and interest expense, and records income tax effects as if Olson had been included in the Company’s results of operations. The pro forma information for fiscal year 2014 also includes an adjustment to eliminate $2.6 million of operating income related to the reduction of an Olson contingent liability that was settled as a result of the acquisition.
	Year Ended December 31 (in thousands except per share amounts)
		2014		2013
	Revenue	$	1,167,787	$	1,067,511
	Operating income		78,518		67,051
	Net income		42,461		35,992
	Earnings per share:
	Basic earnings per share	$	2.17	$	1.82
	Diluted earnings per share	$	2.12	$	1.78
	CityTech
	In March 2014, the Company acquired CityTech, Inc. (“CityTech”), a Chicago-based digital interactive consultancy specializing in enterprise applications development, web experience management, mobile application development, cloud enablement, managed services, and customer experience management solutions. The purchase was immaterial to the Company’s financial statements taken as a whole. The acquisition adds expertise to the Company’s content management capabilities and complements its digital and interactive business.
	Mostra
	In February 2014, the Company completed its acquisition of Mostra SA (“Mostra”), a strategic communications consulting company based in Brussels, Belgium. Mostra offers end-to-end, multichannel communications solutions to assist government and commercial clients, in particular the European Commission. The purchase was immaterial to the Company’s financial statements taken as a whole. The acquisition extends the Company’s strategic communications capabilities globally to complement its policy work and enhance its strategy of providing a full suite of services that leverage its research and advisory services.
	ECA
	In July 2013, the Company hired the staff of, and purchased certain assets and liabilities from, Ecommerce Accelerator LLC (“ECA”), an e-commerce technology services firm based in New York, New York. In connection with the acquisition, we recorded a contingent consideration payable reflected in other long-term liabilities at the estimated fair value of $2.8 million at December 31, 2013. The fair value of the contingent liability was reduced to zero in the first quarter of 2014 and the change in the fair value measurement of $2.8 million was recorded as a reduction to indirect and selling expenses. We are no longer required to pay contingent consideration to ECA, as the parties mutually agreed to the release of this potential obligation in the third quarter of 2014. The purchase was immaterial to the Company’s financial statements taken as a whole. The addition of ECA enhanced ICF’s multi-channel, end-to-end e-commerce solutions.
	Symbiotic
	In September 2012, the Company hired the staff and purchased certain assets from Symbiotic, a company based in Boulder, Colorado. The purchase was immaterial to the Company’s financial statements taken as a whole. The purchase included the Sustainability Information System (“SIMS”) platform, which brought the Company new opportunities to provide utility clients information and analyses for better managing costs, promoting energy efficiency, protecting the environment, and creating consumer value.
	GHK
	In February 2012, the Company completed the acquisition of GHK Holdings Limited (“GHK”). With its headquarters in London, GHK is a multi-disciplinary consultancy serving government and commercial clients on environment, employment, health, education and training, transportation, social policy, business and economic development, and international development issues. The purchase was immaterial to the Company’s financial statements taken as a whole. The acquisition complemented and significantly strengthened the Company’s existing European operations and created additional capabilities in Asian markets.

Note_G_Accrued_Salaries_and_Be

Note G - Accrued Salaries and Benefits	12 Months Ended
	Dec. 31, 2014
Compensation Related Costs [Abstract]
Compensation Related Costs, General [Text Block]	NOTE G—ACCRUED SALARIES AND BENEFITS
	Accrued salaries and benefits consisted of the following at December 31:
		2014		2013
	Accrued paid time off (“PTO”) and leave	$	10,291	$	7,769
	Accrued salaries		22,033		18,707
	Accrued bonuses, liability-classified awards and commissions		15,451		13,368
	Accrued medical		2,514		3,238
	Other		6,025		2,912
	Total accrued salaries and benefits	$	56,314	$	45,994

Note_H_Accrued_Expenses_and_Ot

Note H - Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	NOTE H—ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
	Accrued expenses consisted of the following at December 31:
		2014		2013
	Accrued subcontractor and other direct costs	$	26,084	$	19,480
	Deposits		4,475		3,530
	Accrued IT and software licensing costs		3,566		4,173
	Accrued insurance premiums		1,646		1,454
	Accrued professional services		1,112		1,120
	Other accrued expenses and current liabilities		5,425		2,499
	Total accrued expenses and other current liabilities	$	42,308	$	32,256

Note_I_Longterm_Debt

Note I - Long-term Debt	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Long-term Debt [Text Block]	NOTE I—LONG-TERM DEBT
	The Company entered into a Fourth Amended and Restated Business Loan and Security Agreement (the “Credit Facility”) on May 16, 2014 with a syndication of 11 commercial banks. The Company amended the Credit Facility to allow for borrowing in foreign currencies and to enter into local financial arrangements for its foreign subsidiaries. The amendment also extended the term of our Credit Facility from March 14, 2017 to May 16, 2019 (five years from the closing date). The amended Credit Facility continued to allow for borrowings of up to $400.0 million without a borrowing base requirement, taking into account financial, performance-based limitations and provided for an “accordion,” which permits additional revolving credit commitments of up to $100.0 million, subject to lenders’ approval. On November 5, 2014, the Company modified the Credit Facility to increase the available commitments from $400.0 million to $500.0 million, giving effect to the $100.0 million available under the accordion, and to reinstate the borrowing capacity under the accordion for an additional $100.0 million. The Credit Facility provides for stand-by letters of credit aggregating up to $30.0 million that reduce the funds available under the revolving line of credit when issued. The Company incurred approximately $1.2 million in additional debt issuance costs during 2014 related to amending and modifying the Credit Facility, which are amortized over the term of the agreement.
	The Credit Facility is collateralized by substantially all of the assets of the Company and requires that the Company remain in compliance with certain financial and non-financial covenants. The financial covenants, as defined in the Credit Facility, require, among other things, that the Company maintain, on a consolidated basis for each quarter, a fixed charge coverage ratio of not less than 1.25 to 1.00 and a leverage ratio of not more than 3.75 to 1.00. As of December 31, 2014, the Company was in compliance with its covenants under the Credit Facility.
	The Company has the ability to borrow funds under its Credit Facility at interest rates based on both LIBOR and prime rates, at its discretion, plus their applicable margins. Interest rates on debt outstanding ranged from 1.40% to 4.25% during 2014.
	As of December 31, 2014, the Company had $350.1 million in long-term debt outstanding, $4.4 million in outstanding letters of credit, and available borrowing capacity of $145.5 million under the Credit Facility (excluding the accordion). Taking into account the financial, performance-based limitations, available borrowing capacity (excluding the accordion) was $140.1 million as of December 31, 2014.
	The Company’s debt issuance costs are amortized over the term of indebtedness. Amortizable debt issuance costs were $5.8 million and $4.6 million as of December 31, 2014 and 2013, respectively. Accumulated amortization related to debt issuance costs was $3.5 million and $3.1 million, as of December 31, 2014 and 2013, respectively. Amortization expense of $0.5 million, $0.5 million, and $0.6 million was recorded for the years ended December 31, 2014, 2013, and 2012, respectively.
	Long-term debt consisted of the following at December 31:
		2014		2013
	Revolving Line of Credit/Swing Line. Outstanding borrowings bear daily interest at a base rate (based on the U.S. Prime Rate, which was 3.25% at December 31, 2014 and December 31, 2013, plus a spread) or LIBOR (1, 3, or 6 month rates) plus a spread, payable monthly	$	350,052	$	40,000
	Letters of Credit
	At December 31, 2014 and 2013, the Company had outstanding letters of credit totaling approximately $4.4 million and $3.0 million, respectively. These letters of credit are renewed annually.

Note_J_Income_Taxes

Note J - Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	NOTE J—INCOME TAXES
	Income tax expense consisted of the following at December 31:
		2014			2013			2012
	Current:
	Federal	$	13,383		$	15,154		$	7,730
	State		3,151			3,247			1,328
	Foreign		3,563			1,651			1,184
			20,097			20,052			10,242
	Deferred:
	Federal		3,264			2,523			10,977
	State		399			323			2,550
	Foreign		360			(2	)		67
			4,023			2,844			13,594
	Income Tax Expense	$	24,120		$	22,896		$	23,836
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and income tax purposes. Such amounts are classified in the consolidated statements of financial position as current or non-current assets or liabilities based upon the classification of the related assets and liabilities.
	Deferred tax assets (liabilities) consisted of the following at December 31:
		2014			2013
	Deferred Tax Assets
	Current:
	Stock option compensation	$	319		$	503
	Allowance for bad debt		789			687
	Accrued PTO		1,975			2,647
	Accrued bonus		608			524
	Foreign tax credits		322			642
	Accrued liabilities		1,890			1,474
	Total current deferred tax asset		5,903			6,477
	Non-current:
	Foreign net operating loss (NOL) carry forward		542			513
	Federal/state net operating loss (NOL) carry forward		3,447			271
	Stock option compensation		3,757			2,237
	Deferred rent		5,086			4,096
	Deferred compensation		2,823			2,273
	Foreign tax credits		2,060			947
	State tax credits		1,016			712
	Federal tax credits		225			—
	Foreign exchange		447			—
	Accrued liabilities and other		1,375			2,592
	Total non-current deferred tax assets		20,778			13,641
	Less: Valuation Allowance		(542	)		(513	)
	Total Deferred Tax Assets	$	26,139		$	19,605
	Deferred Tax Liabilities
	Current:
	Retention	$	(1,899	)	$	(1,319	)
	Prepaids		(1,549	)		(946	)
	Payroll taxes		(1,064	)		(819	)
	Unbilled revenue		(8,483	)		(9,449	)
	Other		(219	)		(88	)
	Total current deferred liability		(13,214	)		(12,621	)
	Non-current:
	Depreciation		(8,766	)		(4,751	)
	Amortization		(39,318	)		(19,022	)
	Other		(39	)		(135	)
	Total non-current deferred tax liabilities		(48,123	)		(23,908	)
	Total Deferred Tax Liabilities		(61,337	)		(36,529	)
	Total Net Deferred Tax Liability	$	(35,198	)	$	(16,924	)
	At December 31, 2014 and 2013, the Company had net operating loss (“NOL”) carry-forwards for foreign income taxes of approximately $1.9 million and $1.6 million, respectively, all of which may be carried forward indefinitely.
	At December 31, 2014, the Company had NOL carry-forwards for U.S. federal and state income tax purposes of approximately $14 million, which expire in 2034. The Company also had federal tax credits totaling $0.2 million, all of which may be carried forward indefinitely. The Company acquired these NOLs and credits as a result of its purchase of Olson in November 2014. Internal Revenue Code Section 382 imposes an annual limitation on the use of a corporation’s NOLs, tax credits and other carryovers after an “ownership change” occurs.
	Section 382 imposes an annual limitation on the amount of post-ownership change taxable income a corporation may offset with pre-ownership change NOLs and credits. In general, the annual limitation is determined by multiplying the value of the corporation’s stock immediately before the ownership change (subject to certain adjustments) by the applicable long-term tax-exempt rate. Any unused portion of the annual limitation is available for use in future years until such NOLs are scheduled to expire (in general, NOLs may be carried forward 20 years). The Company presently estimates that it will be able to fully utilize the acquired NOLs and credits prior to their expiration.
	At December 31, 2014, the Company had gross state income tax credit carry-forwards of approximately $1.5 million, which expire between 2017 and 2024. A deferred tax asset of approximately $1.0 million (net of federal benefit) has been established related to these state income tax credit carry-forwards as of December 31, 2014.
	The need to establish valuation allowances for deferred assets is based on a more-likely-than-not threshold that the benefit of such assets will be realized in future periods. Appropriate consideration has been given to all available evidence, including historical operating results, projections of taxable income, and tax planning alternatives. The Company concluded that a valuation allowance of approximately $0.5 million is required for tax attributes related to specified foreign jurisdictions as of each of December 31, 2014 and 2013.
	Effective January 1, 2009, the Company made no provisions for deferred U.S. income taxes or additional foreign taxes on any unremitted earnings of its controlled foreign subsidiaries because the Company considers these earnings to be permanently invested. If these earnings were repatriated, in the form of dividends or otherwise, the Company would be subject to U.S. income tax on these earnings. Determination of the amount of unrecognized deferred U.S. income tax liability is not practicable due to the complexities associated with this hypothetical calculation; however, unrecognized foreign tax credit carry forwards would be available to reduce some portion of the U.S. tax liability. The Company has $2.4 million of foreign tax credits available for carry forward related to its foreign branch operations as of December 31, 2014.
	On September 13, 2013, the Treasury Department and the Internal Revenue Service issued final regulations regarding the deduction and capitalization of amounts paid to acquire, produce, improve or dispose of tangible personal property. These regulations are generally effective for tax years beginning on or after January 1, 2014. The application of these regulations did not have a material impact on the consolidated financial statements for fiscal year 2014.
	The total amount of unrecognized tax benefits as of both December 31, 2014 and 2013, was $0.7 million. Included in the balance as of December 31, 2014 and 2013, were $0.6 million and $0.2 million, respectively, of tax positions that, if recognized, would impact the effective tax rate.
	The unrecognized tax benefit reconciliation, excluding penalty and interest, is as follows:
Unrecognized tax benefits at January 1, 2012	$	1,061
Increase attributable to tax positions taken during the current period		78
Decrease attributable to lapse of statute of limitations		(48	)
Unrecognized tax benefits at December 31, 2012		1,091
Decrease attributable to settlements		(8	)
Increase attributable to tax positions taken during a prior period		43
Decrease attributable to lapse of statute of limitations		(424	)
Unrecognized tax benefits at December 31, 2013		702
Increase (decrease) in unrecognized tax benefits		—
Unrecognized tax benefits at December 31, 2014	$	702
The Company’s policy is not to recognize accrued interest and penalties related to unrecognized tax benefits as a component of tax expense. The Company had approximately $0.2 million of accrued penalty and interest at both December 31, 2014, and 2013, respectively.
The Company’s 2008 through 2014 tax years remain subject to examination by the Internal Revenue Service for U.S. federal tax purposes. In addition, certain significant state and foreign tax jurisdictions are either currently under examination or remain open under the statute of limitations and subject to examination for the tax years from 2008 to 2014.
Although the Company believes it has adequately provided for all uncertain tax positions, amounts asserted by taxing authorities could be greater than the Company’s accrued position. Accordingly, additional provisions on federal, state and foreign income tax related matters could be recorded in the future as revised estimates are made or the underlying matters are effectively settled or otherwise resolved. Conversely, the Company could settle positions with the tax authorities for amounts lower than have been accrued. The Company believes it is reasonably possible that, during the next 12 months, the Company’s liability for uncertain tax positions may decrease by approximately $0.3 million.
The Company’s provision for income taxes differs from the anticipated United States federal statutory rate. Approximate differences between the statutory rate and the Company’s provision are as follows:
	2014			2013			2012
Taxes at statutory rate		35	%		35	%		35	%
State taxes, net of federal benefit		4.2	%		4.2	%		4.6	%
Foreign tax rate differential and U.S. unrepatriated earnings		(0.6	)%		(0.3	)%		(0.3	)%
Other permanent differences		2	%		0.7	%		0.8	%
Prior year tax adjustments and changes in unrecognized tax benefits		(2.3	)%		(2.1	)%		(0.9	)%
Tax credits		(0.7	)%		(0.7	)%		(0.7	)%
		37.6	%		36.8	%		38.5	%

Note_K_Accounting_for_Stockbas

Note K - Accounting for Stock-based Compensation	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	NOTE K—ACCOUNTING FOR STOCK-BASED COMPENSATION
	Stock Incentive Plans
	On June 4, 2010, the Company’s stockholders ratified the ICF International, Inc. 2010 Omnibus Incentive Plan (the “Omnibus Plan”), which was adopted by the Company on March 8, 2010. The Omnibus Plan provides for the granting of options, stock appreciation rights, restricted stock, RSUs, performance shares, performance units, CSRSUs, and other stock-based awards to officers, key employees of the Company, and non-employee directors. On June 7, 2013, the Company’s stockholders ratified an amendment (the “Amendment”) to the Omnibus Plan (“the Amended Plan”). The Amendment allowed for the Company to grant an additional 1.75 million shares under the Omnibus Plan, for a total of approximately 3.55 million shares. Under the Amended Plan, shares awarded that are not stock options or stock appreciation rights are counted as 1.93 shares deducted from the Amended Plan for every one share delivered under those awards. Shares awarded that are stock options or stock appreciation rights are counted as a single share deducted from the Amended Plan for every one share delivered under those awards. As of December 31, 2014, the Company had approximately 1.6 million shares available to grant under the Amended Plan. CSRSUs have no impact on the shares available for grant under the Omnibus Plan, and have no impact on the calculated shares used in earnings per share calculations.
	Starting in the third quarter of 2013, the Company started granting awards of unregistered shares to its non-employee directors on a quarterly basis under its Annual Equity Election program to replace the previous restricted stock awards program. The awards are issued from the Company’s treasury stock and have no impact on the shares available for grant under the Omnibus Plan.
	Options and RSUs generally have a vesting term of three or four years. Restricted stock awards generally have a vesting term of one year. CSRSUs generally have a vesting term of four years.
	Total compensation expense relating to stock-based compensation was approximately $13.4 million, $11.9 million, and $8.8 million for the years ended December 31, 2014, 2013, and 2012, respectively. As of December 31, 2014, the total unrecognized compensation expense related to non-vested stock awards totaled approximately $16.4 million. These amounts are expected to be recognized over a weighted-average period of 2.3 years. The unrecognized expense related to CSRSUs totaled approximately $18.8 million at December 31, 2014. These costs are expected to be recognized over a weighted-average period of 3.3 years.
	The assumptions of post-vesting employment termination forfeiture rates used in the determination of fair value of stock awards during calendar year 2014 were based on the Company’s historical average from October 2006 through the 12 months preceding the reporting period. The expected annualized forfeiture rates used varied from 4.51% to 8.68%, and the Company does not expect these termination rates to vary significantly in the future.
	Stock Options
	Option awards are granted with an exercise price equal to the market value of the Company’s common stock on the date of grant. All options outstanding as of December 31, 2014 have a 10-year contractual term. The Company recorded approximately $1.9 million, $1.6 million, and $1.4 million of compensation expense related to stock options for the years ended December 31, 2014, 2013, and 2012, respectively. The fair value assumptions using the Black-Scholes-Merton pricing model for awards in 2014 were 5.1 years for the expected life, 33.0% for historical volatility, and 1.5% for the risk-free rate of return. The fair value assumptions using the Black-Scholes-Merton pricing model for awards in 2013 were 5.4 years for the expected life, 36.8% for historical volatility, and 0.9% for the risk-free rate of return. The fair value assumptions for awards in 2012 were a range of 5.1 to 5.4 years for the expected life, a range of 41.0% to 42.3% for historical volatility, and a range of 0.7% to 1.1% for the risk-free rate of return. At December 31, 2014, unrecognized expense related to stock options totaled approximately $2.4 million, and these costs are expected to be recognized over a weighted average period of 2.2 years.
	The following table summarizes the changes in outstanding stock options:
										Aggregate
							Weighted			Intrinsic
							Average			Value
							Exercise			(in
			Shares				Price			thousands)
	Outstanding at January 1, 2012			460,653			$	20.5
	Exercised			(11,521	)		$	6.73
	Granted			203,436			$	25.39
	Forfeited/Expired			(13,768	)		$	24.58
	Outstanding at December 31, 2012			638,800			$	22.21
	Exercised			(159,309	)		$	19.48
	Granted			218,707			$	27.03
	Forfeited/Expired			(3,646	)		$	24.84
	Outstanding at December 31, 2013			694,552			$	24.34
	Exercised			(85,063	)		$	21.53
	Granted			166,861			$	40.68
	Forfeited/Expired			(9,426	)		$	25.53
	Outstanding at December 31, 2014			766,924			$	28.2		$	9,804
	Vested plus expected to vest at December 31, 2014			749,645			$	28.05		$	9,691
	Exercisable at December 31, 2014			393,800			$	23.78		$	6,771
	The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $40.98 as of December 31, 2014. The total intrinsic value of options exercised was $1.5 million, $2.3 million and $0.2 million for the years ended December 31, 2014, 2013 and 2012, respectively. The weighted average grant date fair value of options granted was $13.00, $9.37 and $9.77 per share for the years ended December 31, 2014, 2013 and 2012, respectively. The fair value of shares vested was $1.8 million, $1.6 million, and $1.0 million, for the years ended December 31, 2014, 2013 and 2012, respectively. As of December 31, 2014, the weighted-average remaining contractual term for options vested and expected to vest was 7.3 years, and for exercisable options was 6.2 years.
	Information regarding stock options outstanding as of the dates indicated is summarized below:
						OPTIONS OUTSTANDING								OPTIONS EXERCISABLE
									Weighted
						Number			Average			Weighted		Number		Weighted
						Outstanding			Remaining			Average		Exercisable		Average
	Range of					As of			Contractual			Exercise		As of		Exercise
	Exercise Prices					12/31/14			Term			Price		12/31/14		Price
	$9.05	–	$25.00				237,276			5.35		$	22.1		232,242	$	22.1
	$25.01	–	$27.00				155,141			7.04		$	25.66		96,885	$	25.66
	$27.01	–	$28.00				207,646			8.21		$	27.03		64,673	$	27.03
	$28.01	–	$41.00				166,861			9.21		$	40.68		—	$	—
	$9.05	to	$41.00				766,924			7.3		$	28.2		393,800	$	23.78
	Restricted Stock Awards
	Compensation expense related to restricted stock awards computed under the fair value method for the years ended December 31, 2013 and 2012, was approximately $0.2 million and $0.8 million, respectively. The Company did not grant restricted stock awards in 2014 and 2013. There was no unrecognized expense related to restricted stock awards as of December 31, 2014. The fair value of shares vested was $0.7 million and $0.8 million, for the years ended December 31, 2013 and 2012, respectively.
	A summary of the Company’s restricted stock awards is presented below.
							Weighted-
							Average
							Grant
			Number of				Date Fair
			Shares				Value
	Non-vested restricted stock awards at January 1, 2012			34,664			$	24.23
	Granted			36,139			$	22.41
	Vested			(34,664	)		$	24.23
	Non-vested restricted stock awards at December 31, 2012			36,139			$	22.41
	Granted			—			$	—
	Vested			(30,825	)		$	22.38
	Forfeited			(5,314	)		$	22.58
	Non-vested restricted stock awards at December 31, 2013			—			$	—
	Restricted Stock Units
	During the year ended December 31, 2014, the Company awarded 265,811 RSUs to employees that vest over 4 years. Upon vesting, the employee is issued one share of stock for each RSU he or she holds. The weighted-average grant date fair value of RSUs granted during the year ended December 31, 2014, was $39.48 per share.
	Compensation expense related to RSUs computed under the fair value method for the years ended December 31, 2014, 2013, and 2012, was approximately $7.8 million, $8.7 million, and $6.6 million, respectively.
	At December 31, 2014, unrecognized expense related to RSUs totaled approximately $14.0 million. These costs are expected to be recognized over a weighted-average period of 2.2 years. The aggregate intrinsic value of RSUs at December 31, 2014 that are expected to vest was approximately $24.8 million. The fair value of shares vested was $8.2 million, $7.0 million, and $5.7 million, for the years ended December 31, 2014, 2013 and 2012, respectively.
	A summary of the Company’s RSUs is presented below.
						Weighted-
						Average			Aggregate
						Grant			Intrinsic
		Number of				Date Fair			Value
		Shares				Value			(in thousands)
Non-vested RSUs at January 1, 2012			769,019			$	23.67
Granted			374,868			$	25.42
Vested			(230,632	)		$	24.66
Cancelled			(64,664	)		$	24.24
Non-vested RSUs at December 31, 2012			848,591			$	24.32
Granted			229,574			$	27.02
Vested			(288,258	)		$	24.28
Cancelled			(33,719	)		$	24.86
Non-vested RSUs at December 31, 2013			756,188			$	25.13
Granted			265,811			$	39.48
Vested			(333,321	)		$	24.73
Cancelled			(44,791	)		$	27.33
Non-vested RSUs at December 31, 2014			643,887			$	31.1		$	26,386
Restricted stock units expected to vest in the future			604,341			$	31.1		$	24,766
The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $40.98 per share as of December 31, 2014.
Cash-Settled Restricted Stock Units
Compensation expense related to CSRSUs computed under the fair value method for the years ended December 31, 2014 and 2013, was $3.2 million and $1.2 million, respectively. The unrecognized expense related to CSRSUs totaled approximately $18.8 million at December 31, 2014. These costs are expected to be recognized over a weighted-average period of 3.3 years. The aggregate intrinsic value of CSRSUs at December 31, 2014 that are expected to vest was approximately $20.4 million. CSRSUs have no impact on the shares available for grant under the Omnibus Plan.
A summary of the Company’s CSRSUs is presented below.
						Weighted-
						Average			Aggregate
						Grant			Intrinsic
						Date Fair			Value
		Shares				Value			(in thousands)
Non-vested CSRSUs at December 31, 2012			—			$	—
Granted			203,115			$	27.84
Cancelled			(2,816	)		$	27.03
Non-vested CSRSUs at December 31, 2013			200,299			$	28.23
Granted			416,432			$	39.12
Vested			(47,742	)		$	27.55
Cancelled			(31,870	)		$	32.12
Non-vested CSRSUs at December 31, 2014			537,119			$	36.36		$	22,011
CSRSUs expected to vest in the future			497,997			$	36.32		$	20,408
The aggregate intrinsic value in the preceding table is based on the Company’s closing stock price of $40.98 per share as of December 31, 2014.
Non-Employee Director Awards
During the year ended December 31, 2014, the Company granted 15,872 shares related to non-employee director awards at a weighted-average grant date fair value of $36.08. During the year ended December 31, 2013, the Company granted 5,133 shares related to non-employee director awards at a weighted-average grant date fair value of $35.06. Non-employee director awards are comprised of unregistered shares and have no impact on the shares available for grant under the Omnibus Plan. Compensation expense related to non-employee director awards computed under the fair value method for the years ended December 31, 2014 and 2013 was $0.5 million and $0.2 million, respectively. There was no unrecognized expense related to these awards as of December 31, 2014.

Note_L_Fair_Value_Measurement

Note L - Fair Value Measurement	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Fair Value, Measurement Inputs, Disclosure [Text Block]	NOTE L—FAIR VALUE MEASUREMENT
	We perform fair value measurements in accordance with the guidance provided by ASC 820. ASC 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date.
	ASC 820 establishes a fair value hierarchy that prioritizes the inputs used to measure fair value into three levels as follows:
	•	Level 1 – Quoted prices for identical instruments in active markets
	•	Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.
	•	Level 3 – Instruments whose significant value drivers are unobservable
	The fair value standards require an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. When a valuation includes inputs from multiple sources at various levels in the fair value hierarchy, the assets or liabilities are classified at the lowest level for which the input has a significant effect on the overall valuation.
	Assets and liabilities measured at fair value on a recurring basis on the Company’s consolidated balance sheets at December 31, 2014 consisted primarily of contingent consideration in connection with business combinations.
	At December 31, 2013, assets and liabilities measured at fair value on a recurring basis on the Company’s consolidated balance sheet consisted primarily of contingent consideration in connection with the Company’s acquisition of ECA in July 2013 as discussed in “Note F —Business Combinations”. In accordance with the purchase agreement for the ECA transaction, the Company was required to pay consideration in the event that ECA achieved certain specified earnings results during the three fiscal-year end periods post-acquisition, ending December 31, 2015. The fair value measurement of contingent consideration was $2.8 million at December 31, 2013. The fair value of the contingent liability was reduced to zero in the first quarter of 2014 and the change in the fair value measurement of $2.8 million was recorded as a reduction to indirect and selling expenses. The Company determined the fair value of contingent consideration using a discounted cash flow model which included a probability assessment of expected future cash flows related to ECA. The fair value measurement used significant inputs that are not observable in the market and thus, represented a Level 3 fair value measurement. As of December 31, 2014, the Company is no longer required to pay contingent consideration to ECA, as the parties mutually agreed to release the Company of this potential obligation in the third quarter of 2014.
	In addition, the Company accounts for forward contract agreements in the consolidated balance sheets as either an asset or liability measured at fair value. The fair value of the hedges at December 31, 2014 and 2013 and the changes in fair value for the years ended December 31, 2014, 2013, and 2012 were immaterial.

Note_M_Earnings_Per_Share

Note M - Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	NOTE M—EARNINGS PER SHARE
	Earnings Per Share
	Basic earnings per share (“EPS”) is computed by dividing reported net income by the weighted-average number of shares outstanding. Diluted EPS considers the potential dilution that could occur if common stock equivalents were exercised or converted into stock. The difference between the basic and diluted weighted-average equivalent shares with respect to the Company’s EPS calculation is due entirely to the assumed exercise of stock options and the vesting of restricted stock and RSUs. For the years ended December 31, 2014, 2013 and 2012, approximately 151,611, 173,168 and 1,945 anti-dilutive weighted-average shares were excluded from the calculation of EPS because they were anti-dilutive. The dilutive effect of stock options and awards for each period reported is summarized below:
		2014		2013		2012
		(in thousands)
	Basic weighted-average shares outstanding		19,608		19,755		19,663
	Effect of potential exercise of stock options and unvested restricted stock and RSUs		389		431		294
	Diluted weighted-average shares outstanding		19,997		20,186		19,957

Note_N_Share_Repurchase_Progra

Note N - Share Repurchase Program	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Treasury Stock [Text Block]	NOTE N—SHARE REPURCHASE PROGRAM
	The Company’s Board of Directors approved a share repurchase plan effective in November 2013 and expiring in November 2015, authorizing the Company to repurchase in the aggregate up to $35.0 million of its outstanding common stock. Purchases under this program may be made from time to time at prevailing market prices in open market purchases or in privately negotiated transactions pursuant to Rules 10b5-1 and 10b-18 under the Securities Exchange Act of 1934, as amended and in accordance with applicable insider trading and other securities laws and regulations. The purchases are funded from existing cash balances and/or borrowings, and the repurchased shares are held in treasury and used for general corporate purposes. The timing and extent to which the Company repurchases its shares will depend upon market conditions and other corporate considerations as may be considered in the Company’s sole discretion.
	During the year ended December 31, 2014, the Company repurchased 665,868 shares under this program at an average price of $36.64 per share. Of the $35.0 million approved for share repurchases, approximately $5.2 million remained available as of December 31, 2014.

Note_O_Contingencies_and_Commi

Note O - Contingencies and Commitments	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	NOTE O—CONTINGENCIES AND COMMITMENTS
	Litigation and Claims
	The Company is involved in various legal matters and proceedings arising in the ordinary course of business. While these matters and proceedings cause it to incur costs, including, but not limited to, attorneys’ fees, the Company currently believes that any ultimate liability arising out of these matters and proceedings will not have a material adverse effect on our financial position, results of operations, or cash flows.
	Road Home Contract
	Although no legal proceeding has been commenced, the Company has received correspondence from the Office of Community Development of the State of Louisiana, claiming that the Company is responsible for the overpayment of Road Home program grant funds to some grant applicants. The State has also indicated that, as it continues to review homeowner grant calculations, it expects to assert additional demands in the future, increasing the aggregate claim amount. The total claim received by the Company to date is approximately $107.0 million. The Company believes this claim has no merit, intends to vigorously defend its position, and has therefore not recorded a liability as of December 31, 2014.
	Operating Leases
	On March 8, 2010, the Company entered into a new lease that replaced its prior headquarters lease, which was due to expire in October 2012. The new lease was initially for approximately 258,000 square feet, with approximately 72,000 square feet of additional space subsequently added. The lease commenced on April 1, 2010, and will expire on December 31, 2022. Base rent under the agreement is approximately $0.9 million per month with annual escalations fixed at 2.5% per year, yielding a total lease commitment of approximately $150.6 million over the twelve-year term of the lease.
	The Company has entered into various other operating leases for equipment and office space. Certain facility leases may contain fixed escalation clauses, certain facility leases require the Company to pay operating expenses in addition to base rental amounts, and nine leases require the Company to maintain letters of credit. Rent expense is recognized on a straight-line basis over the lease term. Rent expense and sub-lease income for operating leases were approximately $35.8 million and less than $0.1 million, respectively, for 2014. Rent expense for operating leases was approximately $36.5 million for 2013. Rent expense and sub-lease income for operating leases were approximately $35.6 million and less than $0.1 million, respectively, for 2012. Future minimum rental payments under all non-cancelable operating leases are as follows:
	Year ending December 31,
	2015	$	36,213
	2016		34,925
	2017		33,602
	2018		32,515
	2019		30,759
	Thereafter		105,583
		$	273,597

Note_P_Employee_Benefit_Plans

Note P - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Compensation and Employee Benefit Plans [Text Block]	NOTE P—EMPLOYEE BENEFIT PLANS
	Retirement Savings Plan
	Effective June 30, 1999, the Company established the ICF Consulting Group Retirement Savings Plan (the “Retirement Savings Plan”). The Retirement Savings Plan is a defined contribution profit sharing plan with a cash or deferred arrangement under Section 401(k) of the Internal Revenue Code.
	Participants in the Retirement Savings Plan are able to elect to defer up to 70% of their compensation subject to statutory limitations, and were entitled to receive 100% employer matching contributions for the first 3% and 50% for the next 2% of their compensation. Contribution expense related to the Retirement Savings Plan for the years ended December 31, 2014, 2013, and 2012, was approximately $12.3 million, $12.0 million, and $11.8 million, respectively.
	Deferred Compensation Plan
	Certain key employees of the Company are eligible to defer a specified percentage of their cash compensation by having it contributed to a nonqualified deferred compensation plan. Eligible employees may elect to defer up to 80% of their base salary and up to 100% of performance bonuses, reduced by any amounts withheld for the payment of taxes or other deductions required by law. Participants are at all times 100% vested in their account balances. The Company funds its deferred compensation liabilities by making cash contributions to a Rabbi Trust at the time the salary or bonus being deferred would otherwise be payable to the employee. Gains or losses on amounts held by the Rabbi Trust are fully allocable to plan participants. As a result, the plan has no material net impact on the Company’s results of operations and the liability to plan participants is fully funded at all times.
	Employee Stock Purchase Plan
	The Company has a 2006 Employee Stock Purchase Plan (“ESPP”) under which one million shares have been authorized for issuance. The ESPP allows eligible employees to purchase shares of our common stock through payroll deductions up to $25,000 per calendar year over six-month offering periods at a discount not to exceed 5% of the market value on the date of each purchase period. For the year ended December 31, 2014, 24,748 shares were purchased by employees and 809,851 shares remain available for future issuance. The Company does not recognize compensation expense related to the ESPP.

Note_Q_Supplemental_Informatio

Note Q - Supplemental Information	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Financing Receivables [Text Block]	NOTE Q—SUPPLEMENTAL INFORMATION
	Valuation and Qualifying Accounts
	Allowance for Doubtful Accounts
		2014			2013		2012
	Balance at beginning of period	$	1,753		$	1,448	$	1,746
	Bad debt expense		272			112		336
	Net recoveries (write-offs)		(138	)		193		(634	)
	Balance at end of period	$	1,887		$	1,753	$	1,448

Note_R_Selected_Quarterly_Fina

Note R - Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	NOTE R—SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
		2014								2013
		1Q		2Q		3Q		4Q		1Q		2Q		3Q		4Q
	Contract revenue	$	245,052	$	263,860	$	264,796	$	276,426	$	233,921	$	241,568	$	244,055	$	229,759
	Operating income		16,650		17,574		18,528		16,610		17,649		17,295		17,154		12,587
	Net income	$	9,716	$	9,998	$	11,553	$	8,763	$	10,112	$	10,331	$	11,131	$	7,756
	Earnings per share:
	Basic	$	0.49	$	0.51	$	0.59	$	0.45	$	0.52	$	0.52	$	0.56	$	0.39
	Diluted		0.48		0.5		0.59		0.44		0.51		0.52		0.55		0.38
	Weighted-average common shares outstanding
	Basic		19,804		19,795		19,450		19,409		19,543		19,706		19,802		19,826
	Diluted		20,277		20,082		19,713		19,744		19,875		19,996		20,165		20,233

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition
	The Company recognizes revenue when persuasive evidence of an arrangement exists, services have been rendered, the contract price is fixed or determinable, and collectability is reasonably assured. The Company enters into three types of contracts: time-and-materials, cost-based, and fixed-price.
		•		Time-and-Materials Contracts. Revenue for time-and-materials contracts is recorded on the basis of allowable labor hours worked multiplied by the contract-defined billing rates, plus the costs of other items used in the performance of the contract. Profits and losses on time-and-materials contracts result from the difference between the cost of services performed and the contract-defined billing rates for these services.
		•		Cost-Based Contracts. Revenue under cost-based contracts is recognized as costs are incurred. Applicable estimated profit, if any, is included in earnings in the proportion that incurred costs bear to total estimated costs. Incentives, award fees, or penalties related to performance are also considered in estimating revenue and profit rates based on actual and anticipated awards, taking into consideration factors such as the Company’s prior award experience and communications with the customer regarding performance.
		•		Fixed-Price Contracts. Revenue for fixed-price contracts is recognized when earned, generally as work is performed. Services performed vary from contract to contract and are not always uniformly performed over the term of the arrangement. We recognize revenue in a number of different ways on fixed-price contracts, including:
		•		Proportional Performance: Revenue on certain fixed-price contracts is recorded each period based upon certain contract performance measures (labor hours, labor costs, or total costs) incurred expressed as a proportion of a total project estimate. Thus, labor hours, labor costs, or total contract costs incurred to date are compared with the total estimate for these items at completion. Performance is based on the ratio of the incurred hours or costs to the total estimate. Progress on a contract is monitored regularly to ensure that revenue recognized reflects project status. When hours or costs incurred are used as the basis for revenue recognition, the hours or costs incurred represent a reasonable surrogate for output measures of contract performance, including the presentation of deliverables to the client. Clients are obligated to pay as services are performed, and in the event that a client cancels the contract, payment for services performed through the date of cancellation is negotiated with the client.
		•		Contractual Outputs: Revenue on certain fixed-price contracts is recognized based upon outputs completed to date expressed as a percentage of total outputs required in the contract or based upon units delivered to the customer multiplied by the contract-defined unit price.
		•		Straight-Line: When services are performed or are expected to be performed consistently throughout an arrangement, or when we are compensated on a retainer or fixed-fee basis and thus regardless of level of effort, revenue is recognized ratably over the period benefited.
		•		Completed Contract: Revenue and costs on certain fixed-price contracts are recognized at completion if the final act is so significant to the arrangement that value is deemed to be transferred only at completion.
	Revenue recognition requires us to use judgment relative to assessing risks, estimating contract revenue and costs or other variables, and making assumptions for scheduling and technical issues. Due to the size and nature of many of our contracts, the estimation of revenue and estimates at completion can be complicated and are subject to many variables. Contract costs include labor, subcontractor costs, and other direct costs, as well as an allocation of allowable indirect costs. At times, we must also make assumptions regarding the length of time to complete the contract because costs include expected increases in wages, prices for subcontractors, and other direct costs. From time to time, facts develop that require us to revise our estimated total costs or hours and thus the associated revenue on a contract. To the extent that a revised estimate affects contract profit or revenue previously recognized, we record the cumulative effect of the revision in the period in which the facts requiring the revision become known. A provision for the full amount of an anticipated loss on any type of contract is recognized in the period in which it becomes probable and can be reasonably estimated. As a result, operating results could be affected by revisions to prior accounting estimates.
	Our contractual arrangements are evaluated to assess whether revenue should be recognized on a gross versus net basis. Management’s assessment when determining gross versus net revenue recognition is based on several factors such as whether we serve as the primary service provider, have autonomy in selecting subcontractors, or have credit risk; all of which are primary indicators that we serve as the principal to the transaction and revenue is recognized on a gross basis. When such indicators are not present and we are primarily functioning as an agent under an arrangement, revenue is recognized on a net basis.
	The approximate percentage of revenue by contract type was as follows:
			Year ended December 31,
			2014			2013			2012
	Time-and-materials			47	%		52	%		49	%
	Fixed-price			34	%		29	%		30	%
	Cost-based			19	%		19	%		21	%
	Total			100	%		100	%		100	%
	Payments to the Company on cost-based contracts with the U.S. government are provisional payments subject to adjustment upon audit by the government. Such audits have been finalized through December 31, 2006, and any adjustments have been immaterial. Contract revenue for subsequent periods has been recorded in amounts that are expected to be realized upon final audit and settlement of costs in those years.
	The Company generates invoices to clients in accordance with the terms of the applicable contract, which may not be directly related to the performance of services. Unbilled receivables are invoiced based upon the achievement of specific events as defined by each contract, including deliverables, timetables, and incurrence of certain costs. Unbilled receivables are classified as a current asset. Advanced billings to clients in excess of revenue earned are recorded as deferred revenue until the revenue recognition criteria are met. Reimbursements of out-of-pocket expenses are included in revenue with corresponding costs incurred by us included in the cost of revenue.
	The Company may proceed with work based upon client direction prior to the completion and signing of formal contract documents. We have a review process for approving any such work. Revenue associated with such work is recognized only when it can reliably be estimated and realization is probable. The Company bases its estimates on a variety of factors, including previous experiences with the client, communications with the client regarding funding status, and its knowledge of available funding for the contract.
	Approximately 61%, 67%, and 70% of the Company’s revenue for the years 2014, 2013, and 2012, respectively, were derived under prime contracts and subcontracts with agencies and departments of the U.S. federal government and state and local governments. For the years ending December 31, 2014, 2013, and 2012, our largest client was HHS, the various branches of which accounted for approximately 17% or $182.3 million, 18% or $173.7 million, and 19% or $180.1 million, respectively, of the Company’s revenue. The accounts receivable due from HHS contracts as of December 31, 2014 and 2013 were approximately $14.5 million and $11.8 million, respectively.
	The Company’s international operations offer services to both commercial and non-U.S. government customers. Revenue is attributed to location based on the geographic areas to which a contract is awarded. The Company’s international revenue as a percentage of total revenue was approximately 12%, 9%, and 7% for the years ended December 31, 2014, 2013 and 2012.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents
	The Company considers cash on deposit and all highly liquid investments with original maturities of three months or less when purchased to be cash and cash equivalents.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted Cash
	The Company has restricted cash representing amounts held in escrow accounts and/or not readily available due to contractual restrictions.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Doubtful Accounts
	The Company considers a number of factors in its estimate of allowance for doubtful accounts, including the customer’s financial condition, historical collection experience, and other factors that may bear on collectability of the receivables. The Company writes off contract receivables when such amounts are determined to be uncollectible. Losses have historically been within management’s expectations.
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment
	Property and equipment are carried at cost and are depreciated using the straight-line method over their estimated useful lives, which range from two to seven years. Leasehold improvements are amortized on a straight-line basis over the shorter of the economic life of the improvement or the related lease term. Assets acquired in acquisitions are recorded at fair value.
	The Company is required to review long-lived assets and identifiable intangibles subject to amortization for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less cost to sell.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill and Other Intangible Assets
	The purchase price of an acquired business is allocated to the tangible assets and separately identifiable intangible assets acquired less liabilities assumed based upon their respective fair values, with the excess recorded as goodwill. Goodwill and intangible assets acquired in a business combination and determined to have an indefinite useful life are not amortized, but instead reviewed for impairment annually, or more frequently if impairment indicators arise. Intangible assets with estimable useful lives must be amortized over such lives and reviewed for impairment.
	The Company performs its annual goodwill impairment review as of September 30 of each year. For the purposes of performing this review, the Company has concluded that it is one reporting unit. For the annual impairment review as of September 30, 2014, a two-step goodwill impairment test was performed which includes a comparison of the fair value of the reporting unit to the carrying value. If the estimated fair value of the reporting unit is less than the carrying value, a second calculation is required to measure the amount of goodwill impairment loss to be recognized for that reporting unit, if any.
	The Company estimates the fair value of its one reporting unit using a market-based approach, which includes certain premiums. The Company conducts a market comparison in which it assesses implied control premiums paid in excess of market price in acquisitions of publicly-traded companies occurring within the past four years of its review. In its comparison, the Company takes into consideration the market, industry, geographic location, and other relevant information of such companies in order to identify companies similar to it. The implied control premiums for each of the acquisitions considered are calculated by comparing the enterprise values of the target companies one month prior to the transaction to their purchase prices on an enterprise value basis. Based on an analysis of the implied control premiums for the four-year period, the Company selects an appropriate control premium based on these factors and applies it to its implied enterprise value derived from the Company’s market capitalization as of the impairment test date. The Company views premiums paid in excess of market price to be derived from potential synergies and benefits gained as a result of the acquisition and, accordingly, the Company believes the inclusion of these premiums in its determination of fair value is appropriate.
	Based upon management’s most recent review, the Company determined that the estimated fair value of the Company’s one reporting unit was not less than the carrying value and that no goodwill impairment charge was required as of September 30, 2014. Historically, the Company has recorded no goodwill impairment charges.
	The Company is required to review long-lived assets and certain identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the asset exceeds its fair value. Assets to be disposed of are reported at the lower of the carrying amount or fair value, less cost to sell.
Research, Development, and Computer Software, Policy [Policy Text Block]	Capitalized Software
	The Company capitalizes eligible costs to develop enhancements and upgrades to internal-use software that are incurred subsequent to the preliminary project stage. Amortization expense is recorded on a straight-line basis over the expected economic life, typically five years. During the years ended December 31, 2014, 2013 and 2012, the costs capitalized for the development of internal- use software were not material to our consolidated financial statements.
Deferred Charges, Policy [Policy Text Block]	Deferred Rent
	The Company recognizes rent expense on a straight-line basis over the term of each lease. Lease incentives or abatements received at or near the inception of leases are accrued and amortized ratably over the life of the lease.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-basedCompensation
	The Company recognizes stock-based compensation expense related to share-based payments to employees, including grants of employee stock options, restricted stock awards, restricted stock units (“RSUs”) and cash-settled restricted stock units (“CSRSUs”), on a straight-line basis over the requisite service period, which is generally the vesting period. Compensation expense is based on the estimated fair value of these instruments and the estimated number of shares we ultimately expect will vest. Non-employee director awards do not include vesting conditions and therefore are expensed when issued.
	The fair value of stock options, restricted stock awards, RSUs and non-employee director awards is estimated based on the fair value of a share of common stock at the grant date. The Company has elected to use the Black-Scholes-Merton option pricing model to determine the fair value of stock options. CSRSUs are settled only in cash payments. The cash payment is based on the fair value of the Company’s stock price at the vesting date, calculated by multiplying the number of CSRSUs vested by the Company’s closing stock price on the vesting date. The payment is subject to a maximum payment cap and a minimum payment floor. The Company treats these awards as liability-classified awards, and therefore accounts for them at fair value estimated based on the closing price of the Company’s stock at the reporting date.
Comprehensive Income, Policy [Policy Text Block]	Other Comprehensive Income (Loss)
	Other comprehensive income (loss) represents foreign currency translation adjustments arising from the use of differing exchange rates from period to period. The financial positions and results of operations of the Company’s foreign subsidiaries are based on the local currency as the functional currency and are translated to U.S. dollars for financial reporting purposes. Assets and liabilities of the subsidiaries are translated at the exchange rate in effect at each period-end. Income statement accounts are translated at the average rate of exchange prevailing during the period. Translation adjustments arising from the use of differing exchange rates from period to period are included in accumulated other comprehensive income (loss) in stockholders’ equity. Gains and losses resulting from foreign currency transactions included in operations are not material for any of the periods presented.
	The activity included in other comprehensive income (loss) related to foreign currency translation adjustments for each period reported is summarized below:
			Year ended December 31,
			2014			2013			2012
	Foreign currency translation adjustments		$	(2,017	)	$	251		$	(436	)
	Realized losses reclassified into earnings(1)			526			—			—
	Other comprehensive (loss) income, net of tax		$	(1,491	)	$	251		$	(436	)
	(1)     For the year ended December 31, 2014, amount represents the reclassification of foreign currency translation adjustments from accumulated other comprehensive loss into earnings as a result of closing one of our international offices. Amount is included in the other (expense) income line item in the statements of comprehensive income.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments
	The Company's financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued expenses, and other current liabilities, are carried at cost, which the Company believes approximates their fair values at December 31, 2014 and 2013, due to their short maturities. The Company believes the carrying value of its lines of credit payable approximate the estimated fair value for debt with similar terms, interest rates, and remaining maturities currently available to companies with similar credit ratings at December 31, 2014 and 2013. The Company applies the provisions of ASC 820, Fair Value Measurements and Disclosures (“ASC 820,”) to its assets and liabilities that are required to be measured at fair value pursuant to other accounting standards, including contingent liabilities related to acquisitions and two foreign currency forward contract agreements not eligible for hedge accounting. The impact of the hedge to the consolidated financial statements was immaterial. The additional fair value disclosures are included in “Note L—Fair Value Measurement.”
Income Tax, Policy [Policy Text Block]	Income Taxes
	The Company recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The Company evaluates its ability to benefit from all deferred tax assets and establishes valuation allowances for amounts it believes are not more likely than not to be realizable. For uncertain tax positions, the Company uses a more-likely-than-not recognition threshold based on the technical merits of the income tax position taken. Income tax positions that meet the more-likely-than-not recognition threshold are measured in order to determine the tax benefit recognized in the financial statements. Penalties, if probable and reasonably estimable, and interest expense related to uncertain tax positions are not recognized as a component of income tax expense but recorded separately in indirect expenses.
Treasury Shares [Policy Text Block]	Treasury Shares
	Treasury shares are accounted for under the cost method.
Segment Reporting, Policy [Policy Text Block]	Segment
	The Company has concluded that it operates in one segment based upon the information used by its chief operating decision maker in evaluating the performance of its business and allocating resources. This single segment represents the Company’s core business, professional services for government and commercial clients. Although the Company describes multiple service offerings to three markets to provide a better understanding of the Company’s business operations, the Company does not manage its business or allocate resources based upon those service offerings or markets.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Risks and Uncertainties
	Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and contract receivables. The majority of the Company’s cash transactions are processed through one U.S. commercial bank. Cash held domestically in excess of daily requirements is used to reduce any amounts outstanding under the Company’s Credit Facility. As of December 31, 2014 and 2013, the Company held approximately $10.1 million and $5.3 million, respectively, of cash in foreign bank accounts. To date, the Company has not incurred losses related to cash and cash equivalents.
	The Company’s contract receivables consist principally of contract receivables from agencies and departments of, as well as from prime contractors to, the federal government, other governments, and commercial organizations. The Company believes that this credit risk, with respect to contract receivables, is limited due to the credit worthiness of the U.S. government. The Company extends credit in the normal course of operations and does not require collateral from its clients.
	The Company has historically been, and continues to be, heavily dependent upon contracts with the federal government and is subject to audit by agencies of the federal government. Such audits determine, among other things, whether an adjustment of invoices rendered to the government is appropriate under the underlying terms of the contracts. Management does not expect any significant adjustments as a result of government audits that will adversely affect the Company’s financial position.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (the “ASU”). The ASU provides a single comprehensive revenue recognition framework and supersedes almost all existing revenue recognition guidance. Included in the new principles-based revenue recognition model are changes to the basis for deciding on the timing for revenue recognition. In addition, the standard expands and improves revenue disclosures. The ASU is effective for the Company in the first quarter of 2017 and can be adopted either retrospectively to each prior reporting period presented or as a cumulative effect adjustment as of the date of adoption. Early adoption of the ASU is not permitted. The Company is currently evaluating the impact of adopting the ASU.

Note_B_Summary_of_Significant_1

Note B - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Revenue Percentage by Contract Type [Table Text Block]		Year ended December 31,
		2014			2013			2012
	Time-and-materials		47	%		52	%		49	%
	Fixed-price		34	%		29	%		30	%
	Cost-based		19	%		19	%		21	%
	Total		100	%		100	%		100	%
Comprehensive Income (Loss) [Table Text Block]		Year ended December 31,
		2014			2013			2012
	Foreign currency translation adjustments	$	(2,017	)	$	251		$	(436	)
	Realized losses reclassified into earnings(1)		526			—			—
	Other comprehensive (loss) income, net of tax	$	(1,491	)	$	251		$	(436	)

Note_C_Contract_Receivables_Ta

Note C - Contract Receivables (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]		2014			2013
	Billed	$	162,976		$	102,995
	Unbilled		90,419			96,243
	Retainages		5,788			3,914
	Other		2,958			3,663
	Allowance for doubtful accounts		(1,887	)		(1,753	)
	Contract receivables, net	$	260,254		$	205,062

Note_D_Property_and_Equipment_

Note D - Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]		2014			2013
	Leasehold improvements	$	19,097		$	9,224
	Software		31,364			27,677
	Furniture and equipment		23,466			17,127
	Computers		27,671			25,415
			101,598			79,443
	Accumulated depreciation and amortization		(58,357	)		(49,229	)
	Total property and equipment, net	$	43,241		$	30,214

Note_E_Goodwill_and_Other_Inta1

Note E - Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]		2014		2013
	Balance as of January 1	$	418,839	$	410,583
	Goodwill resulting from the GHK business combination		—		(101	)
	Goodwill resulting from the ECA business combination		141		8,357
	Goodwill resulting from the Mostra business combination		24,118		—
	Goodwill resulting from the CityTech business combination		19,563		—
	Goodwill resulting from the Olson business combination		225,117		—
	Balance as of December 31	$	687,778	$	418,839
Schedule of Finite-Lived Intangible Assets [Table Text Block]		2014
		Gross					Net
		Carrying		Accumulated			Carrying
		Value		Amortization			Value
	Customer-related	$	118,957	$	(46,703	)	$	72,254
	Developed technology		1,538		(494	)		1,044
	Marketing-related		4,262		(853	)		3,409
	Total intangible assets	$	124,757	$	(48,050	)	$	76,707
		2013
		Gross					Net
		Carrying		Accumulated			Carrying
		Value		Amortization			Value
	Customer-related	$	58,829	$	(47,301	)	$	11,528
	Developed technology		960		(249	)		711
	Total intangible assets	$	59,789	$	(47,550	)	$	12,239
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Year ending December 31,
	2015	$	17,180
	2016		12,929
	2017		11,298
	2018		8,480
	2019		6,162
	Thereafter		20,658
		$	76,707

Note_F_Business_Combinations_T

Note F - Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Cash	$	8,816
	Contract receivables		36,879
	Other current and non-current assets		1,512
	Property and equipment		15,867
	Customer-related intangibles		60,338
	Marketing-related intangibles		3,947
	Developed technology intangibles		578
	Goodwill		225,117
	Total Assets		353,054
	Accounts payable		9,792
	Accrued expenses and other liabilities		12,989
	Accrued salaries and benefits		5,157
	Deferred revenue		9,742
	Deferred taxes and income tax payable		18,984
	Total Liabilities		56,664
	Net Assets	$	296,390
Business Acquisition, Pro Forma Information [Table Text Block]		2014		2013
	Revenue	$	1,167,787	$	1,067,511
	Operating income		78,518		67,051
	Net income		42,461		35,992
	Earnings per share:
	Basic earnings per share	$	2.17	$	1.82
	Diluted earnings per share	$	2.12	$	1.78

Note_G_Accrued_Salaries_and_Be1

Note G - Accrued Salaries and Benefits (Tables)	12 Months Ended
	Dec. 31, 2014
Compensation Related Costs [Abstract]
Schedule of Accrued Employee Benefits Current [Table Text Block]		2014		2013
	Accrued paid time off (“PTO”) and leave	$	10,291	$	7,769
	Accrued salaries		22,033		18,707
	Accrued bonuses, liability-classified awards and commissions		15,451		13,368
	Accrued medical		2,514		3,238
	Other		6,025		2,912
	Total accrued salaries and benefits	$	56,314	$	45,994

Note_H_Accrued_Expenses_and_Ot1

Note H - Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities [Table Text Block]		2014		2013
	Accrued subcontractor and other direct costs	$	26,084	$	19,480
	Deposits		4,475		3,530
	Accrued IT and software licensing costs		3,566		4,173
	Accrued insurance premiums		1,646		1,454
	Accrued professional services		1,112		1,120
	Other accrued expenses and current liabilities		5,425		2,499
	Total accrued expenses and other current liabilities	$	42,308	$	32,256

Note_I_Longterm_Debt_Tables

Note I - Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]		2014		2013
	Revolving Line of Credit/Swing Line. Outstanding borrowings bear daily interest at a base rate (based on the U.S. Prime Rate, which was 3.25% at December 31, 2014 and December 31, 2013, plus a spread) or LIBOR (1, 3, or 6 month rates) plus a spread, payable monthly	$	350,052	$	40,000

Note_J_Income_Taxes_Tables

Note J - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]		2014			2013			2012
	Current:
	Federal	$	13,383		$	15,154		$	7,730
	State		3,151			3,247			1,328
	Foreign		3,563			1,651			1,184
			20,097			20,052			10,242
	Deferred:
	Federal		3,264			2,523			10,977
	State		399			323			2,550
	Foreign		360			(2	)		67
			4,023			2,844			13,594
	Income Tax Expense	$	24,120		$	22,896		$	23,836
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]		2014			2013
	Deferred Tax Assets
	Current:
	Stock option compensation	$	319		$	503
	Allowance for bad debt		789			687
	Accrued PTO		1,975			2,647
	Accrued bonus		608			524
	Foreign tax credits		322			642
	Accrued liabilities		1,890			1,474
	Total current deferred tax asset		5,903			6,477
	Non-current:
	Foreign net operating loss (NOL) carry forward		542			513
	Federal/state net operating loss (NOL) carry forward		3,447			271
	Stock option compensation		3,757			2,237
	Deferred rent		5,086			4,096
	Deferred compensation		2,823			2,273
	Foreign tax credits		2,060			947
	State tax credits		1,016			712
	Federal tax credits		225			—
	Foreign exchange		447			—
	Accrued liabilities and other		1,375			2,592
	Total non-current deferred tax assets		20,778			13,641
	Less: Valuation Allowance		(542	)		(513	)
	Total Deferred Tax Assets	$	26,139		$	19,605
	Deferred Tax Liabilities
	Current:
	Retention	$	(1,899	)	$	(1,319	)
	Prepaids		(1,549	)		(946	)
	Payroll taxes		(1,064	)		(819	)
	Unbilled revenue		(8,483	)		(9,449	)
	Other		(219	)		(88	)
	Total current deferred liability		(13,214	)		(12,621	)
	Non-current:
	Depreciation		(8,766	)		(4,751	)
	Amortization		(39,318	)		(19,022	)
	Other		(39	)		(135	)
	Total non-current deferred tax liabilities		(48,123	)		(23,908	)
	Total Deferred Tax Liabilities		(61,337	)		(36,529	)
	Total Net Deferred Tax Liability	$	(35,198	)	$	(16,924	)
Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward [Table Text Block]	Unrecognized tax benefits at January 1, 2012	$	1,061
	Increase attributable to tax positions taken during the current period		78
	Decrease attributable to lapse of statute of limitations		(48	)
	Unrecognized tax benefits at December 31, 2012		1,091
	Decrease attributable to settlements		(8	)
	Increase attributable to tax positions taken during a prior period		43
	Decrease attributable to lapse of statute of limitations		(424	)
	Unrecognized tax benefits at December 31, 2013		702
	Increase (decrease) in unrecognized tax benefits		—
	Unrecognized tax benefits at December 31, 2014	$	702
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]		2014			2013			2012
	Taxes at statutory rate		35	%		35	%		35	%
	State taxes, net of federal benefit		4.2	%		4.2	%		4.6	%
	Foreign tax rate differential and U.S. unrepatriated earnings		(0.6	)%		(0.3	)%		(0.3	)%
	Other permanent differences		2	%		0.7	%		0.8	%
	Prior year tax adjustments and changes in unrecognized tax benefits		(2.3	)%		(2.1	)%		(0.9	)%
	Tax credits		(0.7	)%		(0.7	)%		(0.7	)%
			37.6	%		36.8	%		38.5	%

Note_K_Accounting_for_Stockbas1

Note K - Accounting for Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Note K - Accounting for Stock-based Compensation (Tables) [Line Items]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]										Aggregate
							Weighted			Intrinsic
							Average			Value
							Exercise			(in
			Shares				Price			thousands)
	Outstanding at January 1, 2012			460,653			$	20.5
	Exercised			(11,521	)		$	6.73
	Granted			203,436			$	25.39
	Forfeited/Expired			(13,768	)		$	24.58
	Outstanding at December 31, 2012			638,800			$	22.21
	Exercised			(159,309	)		$	19.48
	Granted			218,707			$	27.03
	Forfeited/Expired			(3,646	)		$	24.84
	Outstanding at December 31, 2013			694,552			$	24.34
	Exercised			(85,063	)		$	21.53
	Granted			166,861			$	40.68
	Forfeited/Expired			(9,426	)		$	25.53
	Outstanding at December 31, 2014			766,924			$	28.2		$	9,804
	Vested plus expected to vest at December 31, 2014			749,645			$	28.05		$	9,691
	Exercisable at December 31, 2014			393,800			$	23.78		$	6,771
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]						OPTIONS OUTSTANDING								OPTIONS EXERCISABLE
									Weighted
						Number			Average			Weighted		Number		Weighted
						Outstanding			Remaining			Average		Exercisable		Average
	Range of					As of			Contractual			Exercise		As of		Exercise
	Exercise Prices					12/31/14			Term			Price		12/31/14		Price
	$9.05	–	$25.00				237,276			5.35		$	22.1		232,242	$	22.1
	$25.01	–	$27.00				155,141			7.04		$	25.66		96,885	$	25.66
	$27.01	–	$28.00				207,646			8.21		$	27.03		64,673	$	27.03
	$28.01	–	$41.00				166,861			9.21		$	40.68		—	$	—
	$9.05	to	$41.00				766,924			7.3		$	28.2		393,800	$	23.78
Restricted Stock [Member]
Note K - Accounting for Stock-based Compensation (Tables) [Line Items]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]							Weighted-
							Average
							Grant
			Number of				Date Fair
			Shares				Value
	Non-vested restricted stock awards at January 1, 2012			34,664			$	24.23
	Granted			36,139			$	22.41
	Vested			(34,664	)		$	24.23
	Non-vested restricted stock awards at December 31, 2012			36,139			$	22.41
	Granted			—			$	—
	Vested			(30,825	)		$	22.38
	Forfeited			(5,314	)		$	22.58
	Non-vested restricted stock awards at December 31, 2013			—			$	—
Restricted Stock Units (RSUs) [Member]
Note K - Accounting for Stock-based Compensation (Tables) [Line Items]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]							Weighted-
							Average			Aggregate
							Grant			Intrinsic
			Number of				Date Fair			Value
			Shares				Value			(in thousands)
	Non-vested RSUs at January 1, 2012			769,019			$	23.67
	Granted			374,868			$	25.42
	Vested			(230,632	)		$	24.66
	Cancelled			(64,664	)		$	24.24
	Non-vested RSUs at December 31, 2012			848,591			$	24.32
	Granted			229,574			$	27.02
	Vested			(288,258	)		$	24.28
	Cancelled			(33,719	)		$	24.86
	Non-vested RSUs at December 31, 2013			756,188			$	25.13
	Granted			265,811			$	39.48
	Vested			(333,321	)		$	24.73
	Cancelled			(44,791	)		$	27.33
	Non-vested RSUs at December 31, 2014			643,887			$	31.1		$	26,386
	Restricted stock units expected to vest in the future			604,341			$	31.1		$	24,766
Cash Settled RSUs [Member]
Note K - Accounting for Stock-based Compensation (Tables) [Line Items]
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]							Weighted-
							Average			Aggregate
							Grant			Intrinsic
							Date Fair			Value
			Shares				Value			(in thousands)
	Non-vested CSRSUs at December 31, 2012			—			$	—
	Granted			203,115			$	27.84
	Cancelled			(2,816	)		$	27.03
	Non-vested CSRSUs at December 31, 2013			200,299			$	28.23
	Granted			416,432			$	39.12
	Vested			(47,742	)		$	27.55
	Cancelled			(31,870	)		$	32.12
	Non-vested CSRSUs at December 31, 2014			537,119			$	36.36		$	22,011
	CSRSUs expected to vest in the future			497,997			$	36.32		$	20,408

Note_M_Earnings_Per_Share_Tabl

Note M - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]		2014		2013		2012
		(in thousands)
	Basic weighted-average shares outstanding		19,608		19,755		19,663
	Effect of potential exercise of stock options and unvested restricted stock and RSUs		389		431		294
	Diluted weighted-average shares outstanding		19,997		20,186		19,957

Note_O_Contingencies_and_Commi1

Note O - Contingencies and Commitments (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Year ending December 31,
	2015	$	36,213
	2016		34,925
	2017		33,602
	2018		32,515
	2019		30,759
	Thereafter		105,583
		$	273,597

Note_Q_Supplemental_Informatio1

Note Q - Supplemental Information (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Allowance for Credit Losses on Financing Receivables [Table Text Block]		2014			2013		2012
	Balance at beginning of period	$	1,753		$	1,448	$	1,746
	Bad debt expense		272			112		336
	Net recoveries (write-offs)		(138	)		193		(634	)
	Balance at end of period	$	1,887		$	1,753	$	1,448

Note_R_Selected_Quarterly_Fina1

Note R - Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]		2014								2013
		1Q		2Q		3Q		4Q		1Q		2Q		3Q		4Q
	Contract revenue	$	245,052	$	263,860	$	264,796	$	276,426	$	233,921	$	241,568	$	244,055	$	229,759
	Operating income		16,650		17,574		18,528		16,610		17,649		17,295		17,154		12,587
	Net income	$	9,716	$	9,998	$	11,553	$	8,763	$	10,112	$	10,331	$	11,131	$	7,756
	Earnings per share:
	Basic	$	0.49	$	0.51	$	0.59	$	0.45	$	0.52	$	0.52	$	0.56	$	0.39
	Diluted		0.48		0.5		0.59		0.44		0.51		0.52		0.55		0.38
	Weighted-average common shares outstanding
	Basic		19,804		19,795		19,450		19,409		19,543		19,706		19,802		19,826
	Diluted		20,277		20,082		19,713		19,744		19,875		19,996		20,165		20,233

Note_A_Basis_of_Presentation_a1

Note A - Basis of Presentation and Nature of Operations (Details)	Dec. 31, 2014
Domestic [Member]
Note A - Basis of Presentation and Nature of Operations (Details) [Line Items]
Number of Offices	55
International [Member]
Note A - Basis of Presentation and Nature of Operations (Details) [Line Items]
Number of Offices	15

Note_B_Summary_of_Significant_2

Note B - Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Revenues (in Dollars)	$276,426,000	$264,796,000	$263,860,000	$245,052,000	$229,759,000	$244,055,000	$241,568,000	$233,921,000		$1,050,134,000	$949,303,000	$937,133,000
Goodwill, Impairment Loss (in Dollars)									0
Foreign Financial Institutions, Actual Deposits (in Dollars)	10,100,000				5,300,000					10,100,000	5,300,000
United States Government [Member] | Sales Revenue, Services, Net [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage										61.00%	67.00%	70.00%
HHS [Member] | Sales Revenue, Services, Net [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage										17.00%	18.00%	19.00%
HHS [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Revenues (in Dollars)										182,300,000	173,700,000	180,100,000
Accounts Receivable, Net (in Dollars)	$14,500,000				$11,800,000					$14,500,000	$11,800,000
International [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage										12.00%	9.00%	7.00%
Sales Revenue, Services, Net [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage										100.00%	100.00%	100.00%
Minimum [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life										2 years
Finite-Lived Intangible Asset, Useful Life										1 year
Maximum [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life										7 years
Finite-Lived Intangible Asset, Useful Life										10 years
Other Assets [Member]
Note B - Summary of Significant Accounting Policies (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life										5 years

Note_B_Summary_of_Significant_3

Note B - Summary of Significant Accounting Policies (Details) - Percentage of Revenue by Contract Type (Sales Revenue, Services, Net [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note B - Summary of Significant Accounting Policies (Details) - Percentage of Revenue by Contract Type [Line Items]
Percentage of revenue by contract	100.00%	100.00%	100.00%
Time And Materials Contract [Member]
Note B - Summary of Significant Accounting Policies (Details) - Percentage of Revenue by Contract Type [Line Items]
Percentage of revenue by contract	47.00%	52.00%	49.00%
Fixed Price Contract [Member]
Note B - Summary of Significant Accounting Policies (Details) - Percentage of Revenue by Contract Type [Line Items]
Percentage of revenue by contract	34.00%	29.00%	30.00%
Cost Based Contract [Member]
Note B - Summary of Significant Accounting Policies (Details) - Percentage of Revenue by Contract Type [Line Items]
Percentage of revenue by contract	19.00%	19.00%	21.00%

Note_B_Summary_of_Significant_4

Note B - Summary of Significant Accounting Policies (Details) - Other Comprehensive Income Activity (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Other Comprehensive Income Activity [Abstract]
Foreign currency translation adjustments	($2,017)		$251		($436)
Realized losses reclassified into earnings(1)	526	[1]		[1]		[1]
Other comprehensive (loss) income, net of tax	($1,491)		$251		($436)
[1]	For the year ended December 31, 2014, amount represents the reclassification of foreign currency translation adjustments from accumulated othercomprehensive loss into earnings as a result of closing one of our international offices. Amount is included in the other (expense) income line item in thestatements of comprehensive income.

Note_C_Contract_Receivables_De

Note C - Contract Receivables (Details)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Majority Of Unbilled Receivables Will Be Substantially Billed And Collected	1 year

Note_C_Contract_Receivables_De1

Note C - Contract Receivables (Details) - Summary of Contract Receivables (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Summary of Contract Receivables [Abstract]
Billed	$162,976	$102,995
Unbilled	90,419	96,243
Retainages	5,788	3,914
Other	2,958	3,663
Allowance for doubtful accounts	-1,887	-1,753
Contract receivables, net	$260,254	$205,062

Note_D_Property_and_Equipment_1

Note D - Property and Equipment (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Depreciation	$13.40	$11.20	$9.80

Note_D_Property_and_Equipment_2

Note D - Property and Equipment (Details) - Property and Equipment (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$101,598	$79,443
Accumulated depreciation and amortization	-58,357	-49,229
Total property and equipment, net	43,241	30,214
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,097	9,224
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	31,364	27,677
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,466	17,127
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$27,671	$25,415

Note_E_Goodwill_and_Other_Inta2

Note E - Goodwill and Other Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Amortization of Intangible Assets (in Dollars)	$10,437	$9,477	$14,089
Customer Relationships [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years 292 days
Technology-Based Intangible Assets [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years 109 days
Marketing-Related Intangible Assets [Member] | Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year 73 days
Minimum [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Weighted Average [Member]
Note E - Goodwill and Other Intangible Assets (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years 6 months

Note_E_Goodwill_and_Other_Inta3

Note E - Goodwill and Other Intangible Assets (Details) - Changes in Carrying Amount of Goodwill (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2012	Nov. 05, 2014
Goodwill [Line Items]
Balance as of January 1			$410,583
Balance as of December 31	418,839	687,778	410,583
GHK [Member]
Goodwill [Line Items]
Goodwill resulting from business combination	-101
ECA [Member]
Goodwill [Line Items]
Goodwill resulting from business combination	8,357	141
Mostra [Member]
Goodwill [Line Items]
Goodwill resulting from business combination		24,118
CityTech [Member]
Goodwill [Line Items]
Goodwill resulting from business combination		19,563
Olson [Member]
Goodwill [Line Items]
Balance as of January 1				225,100
Goodwill resulting from business combination		225,117
Balance as of December 31		$225,117		$225,100

Note_E_Goodwill_and_Other_Inta4

Note E - Goodwill and Other Intangible Assets (Details) - Other Intangible Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$124,757	$59,789
Accumulated Amortization	-48,050	-47,550
Net Carrying Value	76,707	12,239
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	118,957	58,829
Accumulated Amortization	-46,703	-47,301
Net Carrying Value	72,254	11,528
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,538	960
Accumulated Amortization	-494	-249
Net Carrying Value	1,044	711
Marketing-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,262
Accumulated Amortization	-853
Net Carrying Value	$3,409

Note_E_Goodwill_and_Other_Inta5

Note E - Goodwill and Other Intangible Assets (Details) - Estimated Future Amortization Expense Related to Intangible Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Estimated Future Amortization Expense Related to Intangible Assets [Abstract]
2015	$17,180
2016	12,929
2017	11,298
2018	8,480
2019	6,162
Thereafter	20,658
	$76,707	$12,239

Note_F_Business_Combinations_D

Note F - Business Combinations (Details) (USD $)	0 Months Ended		12 Months Ended	3 Months Ended
	Mar. 31, 2014	Nov. 05, 2014	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note F - Business Combinations (Details) [Line Items]
Goodwill			$687,778,000		$418,839,000	$410,583,000
Liabilities, Fair Value Disclosure, Recurring	0			0	2,800,000
Liabilities, Fair Value Adjustment	-2,800,000
Other Intangible Assets [Member] | Olson [Member]
Note F - Business Combinations (Details) [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		9 years 219 days
Customer-Related Intangible Assets [Member] | Olson [Member]
Note F - Business Combinations (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		60,300,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years 73 days
Marketing-Related Intangible Assets [Member] | Olson [Member]
Note F - Business Combinations (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		3,900,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		1 year 73 days
Technology-Based Intangible Assets [Member] | Olson [Member]
Note F - Business Combinations (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		600,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 years 73 days
Olson [Member]
Note F - Business Combinations (Details) [Line Items]
Business Acquisition, Effective Date of Acquisition		5-Nov-14
Payments to Acquire Businesses, Gross		296,400,000
Amount of Purchase Price in Excess of Fair Value		289,900,000
Goodwill		225,100,000	225,117,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		64,800,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			23,000,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual			2,200,000
Business Combination, Acquisition Related Costs			1,600,000
Business Combination Proforma Information, Adjustment Operating Income			-2,600,000
ECA [Member]
Note F - Business Combinations (Details) [Line Items]
Liabilities, Fair Value Disclosure, Recurring	0			0	2,800,000
Liabilities, Fair Value Adjustment				($2,800,000)

Note_F_Business_Combinations_D1

Note F - Business Combinations (Details) - Preliminary Purchase Price Allocation (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 05, 2014
In Thousands, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$687,778	$418,839	$410,583
Customer-Related Intangible Assets [Member] | Olson [Member]
Business Acquisition [Line Items]
Finite-Lived Intangibles Assets	60,338
Marketing-Related Intangible Assets [Member] | Olson [Member]
Business Acquisition [Line Items]
Finite-Lived Intangibles Assets	3,947
Developed Technology Rights [Member] | Olson [Member]
Business Acquisition [Line Items]
Finite-Lived Intangibles Assets	578
Olson [Member]
Business Acquisition [Line Items]
Cash	8,816
Contract receivables	36,879
Other current and non-current assets	1,512
Property and equipment	15,867
Goodwill	225,117			225,100
Total Assets	353,054
Accounts payable	9,792
Accrued expenses and other liabilities	12,989
Accrued salaries and benefits	5,157
Deferred revenue	9,742
Deferred taxes and income tax payable	18,984
Total Liabilities	56,664
Net Assets	$296,390

Note_F_Business_Combinations_D2

Note F - Business Combinations (Details) - Unaudited Condensed Pro Forma Information (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Unaudited Condensed Pro Forma Information [Abstract]
Revenue	$1,167,787	$1,067,511
Operating income	78,518	67,051
Net income	$42,461	$35,992
Basic earnings per share (in Dollars per share)	$2.17	$1.82
Diluted earnings per share (in Dollars per share)	$2.12	$1.78

Note_G_Accrued_Salaries_and_Be2

Note G - Accrued Salaries and Benefits (Details) - Accrued Salaries and Benefits (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Salaries and Benefits [Abstract]
Accrued paid time off (“PTO”) and leave	$10,291	$7,769
Accrued salaries	22,033	18,707
Accrued bonuses, liability-classified awards and commissions	15,451	13,368
Accrued medical	2,514	3,238
Other	6,025	2,912
Total accrued salaries and benefits	$56,314	$45,994

Note_H_Accrued_Expenses_and_Ot2

Note H - Accrued Expenses and Other Current Liabilities (Details) - Accrued Expenses (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Expenses [Abstract]
Accrued subcontractor and other direct costs	$26,084	$19,480
Deposits	4,475	3,530
Accrued IT and software licensing costs	3,566	4,173
Accrued insurance premiums	1,646	1,454
Accrued professional services	1,112	1,120
Other accrued expenses and current liabilities	5,425	2,499
Total accrued expenses and other current liabilities	$42,308	$32,256

Note_I_Longterm_Debt_Details

Note I - Long-term Debt (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 05, 2014	16-May-14
Note I - Long-term Debt (Details) [Line Items]
Credit Facility Syndication Number Of Commercial Banks					11
Line Of Credit Facility, Maximum Borrowing Capacity Without Borrowing Base Requirement				$500,000,000
Line of Credit Facility, Accordion Feature, Additional Revolving Credit Commitments Under Existing Loan Facility				100,000,000
Debt Issuance Cost	1,200,000
Long-term Debt, Excluding Current Maturities	350,052,000	40,000,000
Letters of Credit Outstanding, Amount	4,400,000	3,000,000
Line of Credit Facility, Remaining Borrowing Capacity	145,500,000
Line of Credit Facility, Current Borrowing Capacity	140,100,000
Deferred Finance Costs, Net	5,800,000	4,600,000
Accumulated Amortization, Deferred Finance Costs	3,500,000	3,100,000
Amortization of Financing Costs	500,000	500,000	600,000
Previous Agreement [Member]
Note I - Long-term Debt (Details) [Line Items]
Line of Credit Facility, Expiration Date	14-Mar-17
Amended Agreement [Member]
Note I - Long-term Debt (Details) [Line Items]
Line of Credit Facility, Expiration Date	16-May-19
Line Of Credit Facility, Maximum Borrowing Capacity Without Borrowing Base Requirement					400,000,000
Line of Credit Facility, Accordion Feature, Additional Revolving Credit Commitments Under Existing Loan Facility					100,000,000
Letter of Credit [Member]
Note I - Long-term Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$30,000,000
Minimum [Member]
Note I - Long-term Debt (Details) [Line Items]
Line Of Credit Facility, Fixed Charge Coverage Ratio, Covenant	1.25
Line of Credit Facility, Interest Rate During Period	1.40%
Maximum [Member]
Note I - Long-term Debt (Details) [Line Items]
Line Of Credit Facility, Leverage Ratio Covenant	3.75
Line of Credit Facility, Interest Rate During Period	4.25%

Note_I_Longterm_Debt_Details_L

Note I - Long-term Debt (Details) - Long-term Debt (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Revolving Line of Credit/Swing Line. Outstanding borrowings bear daily interest at a base rate (based on the U.S. Prime Rate, which was 3.25% at December 31, 2014 and December 31, 2013, plus a spread) or LIBOR (1, 3, or 6 month rates) plus a spread, payable monthly	$350,052	$40,000
Line of Credit [Member]
Debt Instrument [Line Items]
Revolving Line of Credit/Swing Line. Outstanding borrowings bear daily interest at a base rate (based on the U.S. Prime Rate, which was 3.25% at December 31, 2014 and December 31, 2013, plus a spread) or LIBOR (1, 3, or 6 month rates) plus a spread, payable monthly	$350,052	$40,000

Note_I_Longterm_Debt_Details_L1

Note I - Long-term Debt (Details) - Long-term Debt (Parentheticals) (Line of Credit [Member], Minimum [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Line of Credit [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest base rate	3.25%	3.25%

Note_J_Income_Taxes_Details

Note J - Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 01, 2009
Note J - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards, Expiration Term	20 years
Deferred Tax Assets, Valuation Allowance	$542,000	$513,000
Deferred Tax Liabilities, Other					0
Unrecognized Tax Benefits	702,000	702,000	1,091,000	1,061,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	600,000	200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	200,000	0.2
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	300,000
Foreign Tax Authority [Member]
Note J - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards	1,900,000	1,600,000
Tax Credit Carryforward, Amount	2,400,000
Deferred Tax Assets, Tax Credit Carryforwards	2,060,000	947,000
Deferred Tax Assets, Valuation Allowance	500,000	500,000
Domestic Tax Authority and State and Local Jurisidiction [Member]
Note J - Income Taxes (Details) [Line Items]
Operating Loss Carryforwards	14,000,000
Domestic Tax Authority [Member]
Note J - Income Taxes (Details) [Line Items]
Tax Credit Carryforward, Amount	200,000
State and Local Jurisdiction [Member]
Note J - Income Taxes (Details) [Line Items]
Tax Credit Carryforward, Amount	1,500,000
Deferred Tax Assets, Tax Credit Carryforwards	$1,016,000	$712,000
Internal Revenue Service (IRS) [Member]
Note J - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination	2008 through 2014
State and Foreign Jurisdictions [Member]
Note J - Income Taxes (Details) [Line Items]
Open Tax Year Subject To Examination	2008 to 2014

Note_J_Income_Taxes_Details_In

Note J - Income Taxes (Details) - Income Tax Expense Components (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$13,383	$15,154	$7,730
State	3,151	3,247	1,328
Foreign	3,563	1,651	1,184
	20,097	20,052	10,242
Deferred:
Federal	3,264	2,523	10,977
State	399	323	2,550
Foreign	360	-2	67
	4,023	2,844	13,594
Income Tax Expense	$24,120	$22,896	$23,836

Note_J_Income_Taxes_Details_De

Note J - Income Taxes (Details) - Deferred Tax Assets (Liabilities) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current:
Stock option compensation	$319	$503
Allowance for bad debt	789	687
Accrued PTO	1,975	2,647
Accrued bonus	608	524
Foreign tax credits	322	642
Accrued liabilities	1,890	1,474
Total current deferred tax asset	5,903	6,477
Non-current:
Foreign net operating loss (NOL) carry forward	542	513
Federal/state net operating loss (NOL) carry forward	3,447	271
Stock option compensation	3,757	2,237
Deferred rent	5,086	4,096
Deferred compensation	2,823	2,273
Foreign exchange	447
Accrued liabilities and other	1,375	2,592
Total non-current deferred tax assets	20,778	13,641
Less: Valuation Allowance	-542	-513
Total Deferred Tax Assets	26,139	19,605
Current:
Retention	-1,899	-1,319
Prepaids	-1,549	-946
Payroll taxes	-1,064	-819
Unbilled revenue	-8,483	-9,449
Other	-219	-88
Total current deferred liability	-13,214	-12,621
Non-current:
Depreciation	-8,766	-4,751
Amortization	-39,318	-19,022
Other	-39	-135
Total non-current deferred tax liabilities	-48,123	-23,908
Total Deferred Tax Liabilities	-61,337	-36,529
Total Net Deferred Tax Liability	-35,198	-16,924
Foreign Tax Authority [Member]
Non-current:
Tax credits	2,060	947
Less: Valuation Allowance	-500	-500
State and Local Jurisdiction [Member]
Non-current:
Tax credits	1,016	712
United States Government [Member]
Non-current:
Tax credits	$225

Note_J_Income_Taxes_Details_Un

Note J - Income Taxes (Details) - Unrecognized Tax Benefit Reconciliation (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Unrecognized Tax Benefit Reconciliation [Abstract]
Unrecognized tax benefits	$1,091	$1,061	$702
Increase attributable to tax positions taken during the current period		78
Decrease attributable to settlements	-8
Increase attributable to tax positions taken during a prior period	43
Decrease attributable to lapse of statute of limitations	-424	-48
Unrecognized tax benefits	$702	$1,091	$702

Note_J_Income_Taxes_Details_Ef

Note J - Income Taxes (Details) - Effective Income Tax Rate Reconciliation	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation [Abstract]
Taxes at statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	4.20%	4.20%	4.60%
Foreign tax rate differential and U.S. unrepatriated earnings	-0.60%	-0.30%	-0.30%
Other permanent differences	2.00%	0.70%	0.80%
Prior year tax adjustments and changes in unrecognized tax benefits	-2.30%	-2.10%	-0.90%
Tax credits	-0.70%	-0.70%	-0.70%
	37.60%	36.80%	38.50%

Note_K_Accounting_for_Stockbas2

Note K - Accounting for Stock-based Compensation (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 07, 2013	Jun. 07, 2013
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	$13,400,000	$11,900,000	$8,800,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	16,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$13	$9.37	$9.77
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	1,800,000	1,600,000	1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term	7 years 109 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	6 years 73 days
Options, Restricted Stock and RSUs [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	1,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 109 days
Employee Stock Options and Restricted Stock Units [Member] | Minimum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Employee Stock Options and Restricted Stock Units [Member] | Maximum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Restricted Stock [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year
Allocated Share-based Compensation Expense		200,000	800,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		700,000	800,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)			36,139
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)			$22.41
Cash Settled RSUs [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Allocated Share-based Compensation Expense	3,200,000	1,200,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 109 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	18,800,000
Share Price (in Dollars per share)	$40.98
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	416,432	203,115
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$39.12	$27.84
Share-based Compensation Arrangement By Share-based PaymentAward, Equity Instruments Other Than Options, Expected To Vest, Aggregate Intrinsic Value	20,400,000
Employee Stock Option [Member] | Minimum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			5 years 36 days
Employee Stock Option [Member] | Maximum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		5 years 146 days	5 years 146 days
Employee Stock Option [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	1,900,000	1,600,000	1,400,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 73 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	2,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years 36 days	36 years 292 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	33.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum		0.90%	41.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum			42.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum			0.70%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum			1.10%
Share Price (in Dollars per share)	$40.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	1,500,000	2,300,000	200,000
Restricted Stock Units (RSUs) [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Allocated Share-based Compensation Expense	7,800,000	8,700,000	6,600,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 73 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	14,000,000
Share Price (in Dollars per share)	$40.98
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	8,200,000	7,000,000	5,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	265,811	229,574	374,868
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$39.48	$27.02	$25.42
Share-based Compensation Arrangement By Share-based PaymentAward, Equity Instruments Other Than Options, Expected To Vest, Aggregate Intrinsic Value	24,800,000
Non-Employee Director Awards [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	500,000	200,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	15,872	5,133
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$36.08	$35.06
Minimum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate	4.51%
Maximum [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate	8.68%
Omnibus Plan [Member]
Note K - Accounting for Stock-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in Shares)					1,750,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)				3,550,000	3,550,000
Equivalent Share Deducted For Every One Share Delivered (in Shares) (in Shares)				1.93

Note_K_Accounting_for_Stockbas3

Note K - Accounting for Stock-based Compensation (Details) - Outstanding Stock Option Activity (Employee Stock Option [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Stock Option [Member]
Note K - Accounting for Stock-based Compensation (Details) - Outstanding Stock Option Activity [Line Items]
Outstanding, Shares	694,552	638,800	460,653
Outstanding, Weighted Average Exercise Price	$24.34	$22.21	$20.50
Vested plus expected to vest at December 31, 2014	749,645
Vested plus expected to vest at December 31, 2014	$28.05
Vested plus expected to vest at December 31, 2014	$9,691
Exercisable at December 31, 2014	393,800
Exercisable at December 31, 2014	$23.78
Exercisable at December 31, 2014	6,771
Exercised, Shares	-85,063	-159,309	-11,521
Exercisedt, Weighted Average Exercise Price	$21.53	$19.48	$6.73
Granted, Shares	166,861	218,707	203,436
Grantedt, Weighted Average Exercise Price	$40.68	$27.03	$25.39
Forfeited/Expired, Shares	-9,426	-3,646	-13,768
Forfeited/Expiredt, Weighted Average Exercise Price	$25.53	$24.84	$24.58
Outstanding, Shares	766,924	694,552	638,800
Outstanding, Weighted Average Exercise Price	$28.20	$24.34	$22.21
Outstanding, Aggregate Intrinsic Value	$9,804

Note_K_Accounting_for_Stockbas4

Note K - Accounting for Stock-based Compensation (Details) - Stock Options Outstanding, by Exercise Price Range (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted Average Remaining Contractual Term	10 years
Price Range 1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower range	9.05
Range of Exercise Prices, Upper range	25
Number Outstanding (in Shares)	237,276
Weighted Average Remaining Contractual Term	5 years 127 days
Weighted Average Exercise Price	22.1
Number Exercisable (in Shares)	232,242
Weighted Average Exercise Price	22.1
Price Range 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower range	25.01
Range of Exercise Prices, Upper range	27
Number Outstanding (in Shares)	155,141
Weighted Average Remaining Contractual Term	7 years 14 days
Weighted Average Exercise Price	25.66
Number Exercisable (in Shares)	96,885
Weighted Average Exercise Price	25.66
Price Range 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower range	27.01
Range of Exercise Prices, Upper range	28
Number Outstanding (in Shares)	207,646
Weighted Average Remaining Contractual Term	8 years 76 days
Weighted Average Exercise Price	27.03
Number Exercisable (in Shares)	64,673
Weighted Average Exercise Price	27.03
Price Range 4 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower range	28.01
Range of Exercise Prices, Upper range	41
Number Outstanding (in Shares)	166,861
Weighted Average Remaining Contractual Term	9 years 76 days
Weighted Average Exercise Price	40.68
Price Range 5 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower range	9.05
Range of Exercise Prices, Upper range	41
Number Outstanding (in Shares)	766,924
Weighted Average Remaining Contractual Term	7 years 109 days
Weighted Average Exercise Price	28.2
Number Exercisable (in Shares)	393,800
Weighted Average Exercise Price	23.78

Note_K_Accounting_for_Stockbas5

Note K - Accounting for Stock-based Compensation (Details) - Restricted Stock Activity (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock [Member]
Note K - Accounting for Stock-based Compensation (Details) - Restricted Stock Activity [Line Items]
Non-vested restricted stock awards, Shares	36,139	34,664
Non-vested restricted stock awards, Weighted-Average Grant Date Fair Value	$22.41	$24.23
Granted, Shares		36,139
Granted, Weighted-Average Grant Date Fair Value		$22.41
Vested, Shares	-30,825	-34,664
Vested Shares	$22.38	$24.23
Forfeited	-5,314
Forfeited	$22.58
Non-vested restricted stock awards, Shares		36,139
Non-vested restricted stock awards, Weighted-Average Grant Date Fair Value		$22.41

Note_K_Accounting_for_Stockbas6

Note K - Accounting for Stock-based Compensation (Details) - Restricted Stock Unit Activity (Restricted Stock Units (RSUs) [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Units (RSUs) [Member]
Note K - Accounting for Stock-based Compensation (Details) - Restricted Stock Unit Activity [Line Items]
Non-vested RSUs, Shares	643,887	756,188	848,591	769,019
Non-vested RSUs, Weighted-Average Grant Date Fair Value	$31.10	$25.13	$24.32	$23.67
Non-vested RSUs, Aggregate Intrinsic Value	$26,386
Granted, Shares	265,811	229,574	374,868
Granted, Weighted-Average Grant Date Fair Value	$39.48	$27.02	$25.42
Vested, Shares	-333,321	-288,258	-230,632
Vested, Weighted-Average Grant Date Fair Value	$24.73	$24.28	$24.66
Cancelled, Shares	-44,791	-33,719	-64,664
Cancelled, Weighted-Average Grant Date Fair Value	$27.33	$24.86	$24.24
Restricted stock units expected to vest in the future	604,341
Restricted stock units expected to vest in the future	$31.10
Restricted stock units expected to vest in the future	$24,766

Note_K_Accounting_for_Stockbas7

Note K - Accounting for Stock-based Compensation (Details) - Cash-settled Restricted Stock Unit Activity (Cash Settled RSUs [Member], USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash Settled RSUs [Member]
Note K - Accounting for Stock-based Compensation (Details) - Cash-settled Restricted Stock Unit Activity [Line Items]
Non-vested CSRSUs at December 31, Shares	537,119	200,299
Non-vested CSRSUs at December 31, Weighted-Average Grant Date Fair Value	$36.36	$28.23
Non-vested CSRSUs at December 31, Aggregate Intrinsic Value	$22,011
Granted, Shares	416,432	203,115
Granted, Weighted-Average Grant Date Fair Value	$39.12	$27.84
Vested	-47,742
Vested	$27.55
Cancelled, Shares	-31,870	-2,816
Cancelled, Weighted-Average Grant Date Fair Value	$32.12	$27.03
CSRSUs expected to vest in the future	497,997
CSRSUs expected to vest in the future	$36.32
CSRSUs expected to vest in the future	$20,408

Note_L_Fair_Value_Measurement_

Note L - Fair Value Measurement (Details) (USD $)	0 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Disclosure Text Block [Abstract]
Liabilities, Fair Value Disclosure, Recurring		$0	$2,800,000
Liabilities, Fair Value Adjustment	($2,800,000)

Note_M_Earnings_Per_Share_Deta

Note M - Earnings Per Share (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	151,611	173,168	1,945

Note_M_Earnings_Per_Share_Deta1

Note M - Earnings Per Share (Details) - Dilutive Effect of Stock Options and Awards	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Dilutive Effect of Stock Options and Awards [Abstract]
Basic weighted-average shares outstanding									19,608,000	19,755,000	19,663,000
Effect of potential exercise of stock options and unvested restricted stock and RSUs									389,000	431,000	294,000
Diluted weighted-average shares outstanding	19,744	19,713	20,082	20,277	20,233	20,165	19,996	19,875	19,997,000	20,186,000	19,957,000

Note_N_Share_Repurchase_Progra1

Note N - Share Repurchase Program (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Nov. 30, 2013
Disclosure Text Block Supplement [Abstract]
Stock Repurchase Program, Authorized Amount		$35
Treasury Stock, Shares, Acquired (in Shares)	665,868
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$36.64
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$5.20

Note_O_Contingencies_and_Commi2

Note O - Contingencies and Commitments (Details) (USD $)	12 Months Ended			0 Months Ended	58 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 08, 2010	Dec. 31, 2014
					sqm
Note O - Contingencies and Commitments (Details) [Line Items]
Community Development Related To Claim	$107,000,000				$107,000,000
Operating Leases, Future Minimum Payments Due	273,597,000				273,597,000
Operating Leases, Rent Expense	35,800,000	36,500,000	35,600,000
Operating Leases, Rent Expense, Sublease Rentals	100,000		100,000
Corporate Office Lease [Member]
Note O - Contingencies and Commitments (Details) [Line Items]
Land Subject to Ground Leases (in Square Meters)				258,000
Additional Land Subject To Ground Leases (in Square Feet) (in Square Meters)					72,000
Term of Lease				12 years
Monthly Rent					900,000
Percentage Of Annual Escalations Of Lease Rent				2.50%
Operating Leases, Future Minimum Payments Due	$150,600,000				$150,600,000

Note_O_Contingencies_and_Commi3

Note O - Contingencies and Commitments (Details) - Future Minimum Rental Payments (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Future Minimum Rental Payments [Abstract]
2015	$36,213
2016	34,925
2017	33,602
2018	32,515
2019	30,759
Thereafter	105,583
	$273,597

Note_P_Employee_Benefit_Plans_

Note P - Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure Text Block Supplement [Abstract]
Maximum Defer Of Compensation Subject To Statutory Limitations Percentage	70.00%
Percentage Of Employer Matching Contributions Condition One	100.00%
Percentage Of Employee Entitled To Employer Matching Contribution Condition One	3.00%
Percentage Of Employer Matching Contributions Condition Two	50.00%
Percentage Of Employee Entitled To Employer Matching Contribution Condition Two	2.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount (in Dollars)	$12,300,000	$12,000,000	$11,800,000
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage	80.00%
Deferred Compensation On Performance Bonuses That Eligible Employee Percentage	100.00%
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage	100.00%
Employee Stock Purchase Plan Shares Authorized (in Shares) (in Shares)	1,000,000
Employee Stock Purchase Plan Annual Maximum Payroll Deduction (in Dollars) (in Dollars)	$25,000
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	5.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares)	24,748
Employee Stock Purchase Plan Number of Shares Available for Grant (in Shares) (in Shares)	809,851

Note_Q_Supplemental_Informatio2

Note Q - Supplemental Information (Details) - Allowance for Doubtful Accounts (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Abstract]
Balance at beginning of period	$1,753	$1,448	$1,746
Bad debt expense	272	112	336
Net recoveries (write-offs)	-138	193	-634
Balance at end of period	$1,887	$1,753	$1,448

Note_R_Selected_Quarterly_Fina2

Note R - Selected Quarterly Financial Data (Unaudited) (Details) - Quarterly Financial Data (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data [Abstract]
Contract revenue	$276,426	$264,796	$263,860	$245,052	$229,759	$244,055	$241,568	$233,921	$1,050,134	$949,303	$937,133
Operating income	16,610	18,528	17,574	16,650	12,587	17,154	17,295	17,649	69,362	64,685	66,182
Net income	$8,763	$11,553	$9,998	$9,716	$7,756	$11,131	$10,331	$10,112	$40,030	$39,330	$38,075
Earnings per share:
Basic (in Dollars per share)	$0.45	$0.59	$0.51	$0.49	$0.39	$0.56	$0.52	$0.52	$2.04	$1.99	$1.94
Diluted (in Dollars per share)	$0.44	$0.59	$0.50	$0.48	$0.38	$0.55	$0.52	$0.51	$2	$1.95	$1.91
Weighted-average common shares outstanding
Basic (in Shares)	19,409	19,450	19,795	19,804	19,826	19,802	19,706	19,543
Diluted (in Shares)	19,744	19,713	20,082	20,277	20,233	20,165	19,996	19,875	19,997,000	20,186,000	19,957,000