Navigant Consulting 10-K 13 Feb 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 09, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Entity Registrant Name	NAVIGANT CONSULTING INC
Entity Central Index Key	1019737
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		48,086,915
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2014
Entity Public Float			$846
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Trading Symbol	nci

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS
Cash and cash equivalents	$2,648	$1,968
Accounts receivable, net	187,652	167,066
Prepaid expenses and other current assets	27,142	24,554
Deferred income tax assets	13,455	17,314
Total current assets	230,897	210,902
Property and equipment, net	60,617	44,338
Intangible assets, net	26,502	10,778
Goodwill	568,091	615,343
Other assets	17,386	22,836
Total assets	903,493	904,197
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	11,735	13,415
Accrued liabilities	11,311	12,691
Accrued compensation-related costs	83,061	78,610
Income tax payable	1,763	1,137
Other current liabilities	52,526	32,009
Total current liabilities	160,396	137,862
Non-current liabilities:
Deferred income tax liabilities	76,329	86,571
Other non-current liabilities	14,387	26,016
Bank debt non-current	109,790	56,673
Total non-current liabilities	200,506	169,260
Total liabilities	360,902	307,122
Stockholders' equity:
Common stock, $0.001 par value per share; 150,000 shares authorized; 63,708 and 62,802 issued as of December 31, 2014 and 2013, respectively	64	63
Additional paid-in capital	611,882	598,724
Treasury stock, 15,491 and 13,770 shares as of December 31, 2014 and 2013, respectively	-275,608	-247,106
Retained earnings	218,337	254,735
Accumulated other comprehensive loss	-12,084	-9,341
Total stockholders' equity	542,591	597,075
Total liabilities and stockholders' equity	$903,493	$904,197

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Consolidated Balance Sheets [Abstract]
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	63,708,000	62,802,000
Treasury stock, shares	15,491,000	13,770,000

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Revenues before reimbursements	$766,552	$734,433	$722,190
Reimbursements	93,065	101,152	96,007
Total revenues	859,617	835,585	818,197
Cost of services before reimbursable expenses	519,157	487,967	476,344
Reimbursable expenses	93,065	101,152	96,007
Total costs of services	612,222	589,119	572,351
General and administrative expenses	136,057	127,079	141,195
Depreciation expense	19,580	16,180	14,986
Amortization expense	5,959	6,826	6,767
Contingent acquisition liability adjustments, net	-4,992	-5,399	1,065
Office consolidation, net	725	348	580
Gain on disposition of assets	-541	-1,715
Goodwill impairment	122,045
Other impairment	1,343
Operating income (loss)	-32,781	103,147	81,253
Interest expense	5,918	4,433	5,453
Interest income	-274	-463	-872
Other (income) expense, net	-167	175	-78
Income (loss) from continuing operations before income tax (benefit) expense	-38,258	99,002	76,750
Income tax (benefit) expense	-1,351	43,890	32,518
Net income (loss) from continuing operations	-36,907	55,112	44,232
Income (loss) from discontinued operations, net of tax	509	-2,919	1,937
Net income (loss)	-36,398	52,193	46,169
Basic per share data
Net income (loss) from continuing operations	($0.76)	$1.11	$0.87
Income (loss) from discontinued operations, net of tax	$0.01	($0.06)	$0.04
Net income (loss)	($0.75)	$1.05	$0.91
Shares used in computing basic per share data	48,741	49,771	50,894
Diluted per share data
Net income (loss) from continuing operations	($0.76)	$1.08	$0.86
Income (loss) from discontinued operations, net of tax	$0.01	($0.06)	$0.04
Net income (loss)	($0.75)	$1.02	$0.90
Shares used in computing diluted per share data	48,741	50,951	51,572
Net income (loss)	-36,398	52,193	46,169
Other comprehensive income (loss), net of tax
Unrealized net gain (loss), foreign currency translation	-2,844	-711	4,088
Unrealized net loss on interest rate derivatives	-127	-39	-339
Reclassification adjustment on interest rate derivatives included in interest expense and income tax expense	228	133	308
Other comprehensive income (loss), net of tax	-2,743	-617	4,057
Total comprehensive income (loss), net of tax	($39,141)	$51,576	$50,226

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
In Thousands, except Share data
Balance at Dec. 31, 2011	$61	($197,602)	$567,627	($12,781)	$156,373	$513,678
Balance, shares at Dec. 31, 2011	61,232,000	-10,138,000
Comprehensive income (loss)				4,057	46,169	50,226
Issuance of common stock related to business combinations		2,551				2,551
Issuance of common stock related to business combinations, shares		289,000
Other issuances of common stock	1	281	3,001			3,283
Other issuances of common stock, shares	385,000	14,000
Tax benefits (deficits) on stock options exercised and restricted stock vested			-99			-99
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings		-2,306	503			-1,803
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings, shares	458,000	-121,000
Share-based compensation expense		-554	10,581			10,027
Share-based compensation expense, shares	29,000	-29,000
Additional paid-in capital recorded through compensation expense			750			750
Repurchases of common stock		-18,870				-18,870
Repurchases of common stock, shares		-1,601,906
Balance at Dec. 31, 2012	62	-216,500	582,363	-8,724	202,542	559,743
Balance, shares at Dec. 31, 2012	62,104,000	-11,587,000
Comprehensive income (loss)				-617	52,193	51,576
Other issuances of common stock	1	94	3,049			3,144
Other issuances of common stock, shares	244,000	5,000
Tax benefits (deficits) on stock options exercised and restricted stock vested			-438			-438
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings		-1,783	-261			-2,044
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings, shares	422,000	-97,000
Share-based compensation expense		-592	11,671			11,079
Share-based compensation expense, shares	32,000	-32,000
Additional paid-in capital recorded through compensation expense			2,340			2,340
Repurchases of common stock		-28,325				-28,325
Repurchases of common stock, shares		-2,059,220
Balance at Dec. 31, 2013	63	-247,106	598,724	-9,341	254,735	597,075
Balance, shares at Dec. 31, 2013	62,802,000	-13,770,000
Comprehensive income (loss)				-2,743	-36,398	-39,141
Other issuances of common stock			2,833			2,833
Other issuances of common stock, shares	195,000
Tax benefits (deficits) on stock options exercised and restricted stock vested			2,069			2,069
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings	1	-1,045	-3,816			-4,860
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings, shares	701,000	-58,000
Share-based compensation expense		-173	9,489			9,316
Share-based compensation expense, shares	10,000	-10,000
Additional paid-in capital recorded through compensation expense			2,583			2,583
Repurchases of common stock		-27,284				-27,284
Repurchases of common stock, shares		-1,653,315
Balance at Dec. 31, 2014	$64	($275,608)	$611,882	($12,084)	$218,337	$542,591
Balance, shares at Dec. 31, 2014	63,708,000	-15,491,000

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 (loss)	($36,398)	$52,193	$46,169
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation expense	19,580	16,180	14,986
Accelerated depreciation - office consolidation		498
Amortization expense	5,959	6,826	6,767
Amortization expense - client-facing software	1,218	459
Share-based compensation expense	9,316	11,079	10,027
Accretion of interest expense	2,351	942	630
Deferred income taxes	-18,052	18,421	11,123
Allowance for doubtful accounts receivable	5,009	-107	6,329
Contingent acquisition liability adjustments, net	-4,992	-5,399	1,065
Gain on disposition of assets	-541	-1,715
(Gain) loss on disposition of discontinued operations	-509	3,675
Goodwill impairment	122,045
Other impairment	1,343
Changes in assets and liabilities (net of acquisitions and dispositions):
Accounts receivable	-14,844	19,604	-22,821
Prepaid expenses and other assets	-303	12,260	-2,668
Accounts payable	-2,123	-4,623	1,754
Accrued liabilities	-1,316	-382	2,879
Accrued compensation-related costs	2,712	-3,470	-10,794
Income taxes payable	2,185	-6,386	4,385
Other liabilities	-2,543	-286	6,131
Net cash provided by operating activities	90,097	119,769	75,962
Cash flows from investing activities:
Purchases of property and equipment	-23,506	-14,217	-20,052
Acquisitions of businesses, net of cash acquired	-89,180	-2,989	-27,479
Proceeds from disposition, net of selling costs	2,324	16,973
Payments of acquisition liabilities	-4,960	-6,866	-4,856
Capitalized client-facing software	-881	-3,285	-1,934
Other, net			-300
Net cash used in investing activities	-116,203	-10,384	-54,621
Cash flows from financing activities:
Issuances of common stock	2,833	3,144	3,283
Repurchases of common stock	-27,284	-28,325	-18,870
Payments of contingent acquisition liabilities	-464	-3,287	-8,580
Repayments to banks	-323,374	-382,045	-347,877
Borrowings from banks	377,839	304,499	349,729
Payments of debt issuance costs		-731
Other, net	-2,668	-1,692	-1,071
Net cash (used in) provided by financing activities	26,882	-108,437	-23,386
Effect of exchange rate changes on cash and cash equivalents	-96	-32	128
Net increase (decrease) in cash and cash equivalents	680	916	-1,917
Cash and cash equivalents at beginning of the period	1,968	1,052	2,969
Cash and cash equivalents at end of the period	2,648	1,968	1,052
Supplemental Consolidated Cash Flow Information
Interest paid	2,841	2,912	4,149
Income taxes paid, net of refunds	$12,307	$30,782	$15,935

Description_Of_Business_And_Ba

Description Of Business And Basis Of Presentation	12 Months Ended
	Dec. 31, 2014
Description Of Business And Basis Of Presentation [Abstract]
Description Of Business And Basis Of Presentation	1.DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION
	Navigant Consulting, Inc. (“we,” “us,” or “our”) is an independent specialized, global professional services firm that combines deep industry knowledge with technical expertise to enable companies to defend, protect and create value. We focus on industries and clients facing transformational change and significant regulatory and legal issues. We serve clients primarily in the healthcare, energy and financial services sectors which represent highly complex market and regulatory environments. Our professional service offerings include strategic, financial, operational, technology, risk management, compliance, investigative solutions, dispute resolution services and business process management services. We provide our services to companies, legal counsel and governmental agencies. Our business is organized in four reporting segments — Disputes, Investigations & Economics; Financial, Risk & Compliance; Healthcare; and Energy.
	We do not believe that any material subsequent events occurred during this period that requires disclosure in the notes to the consolidated financial statements.
	We are headquartered in Chicago, Illinois and have offices in various cities within the United States, as well as offices in the United Kingdom, Canada, China, Singapore, and United Arab Emirates and other countries outside the U.S. Our non-U.S. subsidiaries, in the aggregate, represented approximately 8%,  7% and 8% of our total revenues in 2014, 2013 and 2012, respectively.

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	2.SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Principles of Consolidation
	The consolidated financial statements include our accounts and those of our subsidiaries. All significant intercompany transactions have been eliminated in consolidation.
	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 amounts reported in the consolidated financial statements and the related notes. Actual results could differ from those estimates and may affect future results of operations and cash flows. Examples include: determination of the allowance for doubtful accounts, accruals for incentive compensation, the fair value of acquisition-related contingent consideration, revenue-related percentage of completion estimates, the measurement of deferred tax assets, estimating future performance for recording expense associated with our performance based long-term incentive plan, and the assessment of recoverability of intangible assets and goodwill. We base our estimates on historical trends, current experience and other assumptions that we believe are reasonable.
	Cash and Cash Equivalents
	Cash equivalents are comprised of liquid instruments with original maturity dates of 90 days or less.
	Fair Value of Financial Instruments
	We consider the recorded value of our financial assets and liabilities, which consist primarily of cash and cash equivalents, accounts receivable and accounts payable, to approximate the fair value of the respective assets and liabilities at December 31, 2014 and 2013 based upon the short-term nature of the assets and liabilities. In addition, the fair value of our bank debt considers counterparty credit risk and as of December 31, 2014, approximated carrying value as it bears interest at variable rates. As noted below, we maintain interest rate derivatives which are recorded at fair value (see Note 17 — Fair Value).
	Accounts Receivable Realization
	We maintain allowances for doubtful accounts for estimated losses resulting from our clients’ inability to make required cash payments of amounts due to us or for disputes that affect our ability to fully collect our billed accounts receivable or for potential fee reductions negotiated by clients. Our estimation is based on historical collection and our review and assessment of our clients’ likelihood to make required cash payments of amounts due to us.  Estimated losses may vary from actual results.  If our clients’ financial condition were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required.  If the collectability of billed amounts is not assured, an allowance is recorded to general and administrative expense. If the collectability of unbilled amounts is not assured or certain pricing adjustments are made, an allowance is recorded as a reduction to revenue.
	Property and Equipment, Net
	We record property and equipment at cost. We compute depreciation using the straight-line method based on the estimated useful lives of the assets, ranging from three to seven years for software, furniture, fixtures and equipment. We compute amortization of leasehold improvements over the shorter of the remaining lease term or the estimated useful life of the asset. The lease term of our leaseholds expire at various dates through 2025. During the years ended December 31, 2014, 2013 and 2012, we capitalized compensation costs related to internally developed software for internal use of $1.6 million, $0.9 million and $0.9 million, respectively. We capitalize internally developed software costs during the development stage.
	Client-Facing Software
	Prepaid expenses and other assets also include investments in capitalized client-facing software which is utilized to deliver services to or licensed to our clients.  These amounts are amortized into cost of services before reimbursable expenses over their estimated remaining useful life.
	Operating Leases
	We lease office space under operating leases. Some of the lease agreements contain one or more of the following provisions or clauses: tenant allowances, rent holidays, lease premiums, and rent escalation clauses. For the purpose of recognizing these provisions on a straight-line basis over the terms of the leases, we use the date of initial possession to begin amortization, which is generally when we enter the space and begin to make improvements in preparation of intended use.
	For tenant allowances and rent holidays, we record a deferred rent liability and amortize the deferred rent over the terms of the leases as reductions to rent expense. For scheduled rent escalation clauses during the lease term or for rental payments commencing at a date other than the date of initial occupancy, we record minimum rental expenses on a straight-line basis over the terms of the leases.
	In addition, some of our operating leases contain exit clauses, which include termination fees associated with exiting a lease prior to the expiration of the lease term. We record termination obligations when we give notice to the landlord that we have elected to exercise the early termination clause of such agreement.
	Notes Receivable, Prepaid Sign-on and Retention Bonuses
	We grant and pay sign-on and retention bonuses to attract and retain certain senior-level consultants and administrative personnel. Generally, we require grantees to sign incentive recovery agreements, which obligate the grantees to fulfill a service term, typically between one to five years. If such service term is not fulfilled, the monetary equivalent of the uncompleted service term is required to be paid back to us. We record paid sign-on and retention bonuses to current and non-current other assets and the bonuses are amortized as compensation expense over the service period as defined by the incentive recovery agreements. Certain sign-on and retention bonuses of relatively low amounts are expensed to compensation expense when paid.
	We also issue notes receivable in the form of unsecured employee loans with terms that are generally three to five years. These loans are issued to recruit and retain certain senior-level consultants. The principal amount and accrued interest is either paid by the consultant or forgiven by us over the terms of the loans, so long as the consultant continues employment and complies with certain contractual requirements. The expense associated with the forgiveness of the principal amount of the loans and accrued interest is recorded as compensation expense over the service period, which is consistent with the term of the loans. The accrued interest is calculated based on the loan’s effective interest rate and is recorded as interest income.
	Goodwill and Intangible Assets
	Goodwill represents the difference between the purchase price of the acquired business and the related fair value of the net assets acquired, which is accounted for by the acquisition method of accounting. Intangible assets consist of identifiable intangibles other than goodwill. Identifiable intangible assets, other than goodwill, include customer lists and relationships, employee non-compete agreements, backlog revenue and trade names. These assets are subject to changes in events or circumstances that could impact their carrying value.
	Goodwill is tested for impairment annually during the second quarter. In addition to our annual goodwill test, on a periodic basis, we are required to consider whether it is more likely than not that the fair value has fallen below the carrying amount of an asset and thus requiring us to perform an interim goodwill impairment test. We consider elements and other factors including, but not limited to:
	•adverse changes in the business climate in which we operate;
	•attrition of key personnel;
	•unanticipated competition;
	•our market capitalization in excess of our book value;
	•our recent operating performance; and/or
	•our financial projections.
	The goodwill impairment test is performed at a reporting unit level. A reporting unit, as defined by Accounting Standard Codification (ASC) 350, is an operating segment of a business or one level below an operating segment if discrete financial information is available and regularly reviewed by segment management. At December 31, 2014, we had four operating segments which were also considered to be our reporting units, as follows: Disputes, Investigations & Economics, Financial, Risk & Compliance, Healthcare and Energy.
	Financial Accounting Standards Board Accounting Standards Update (ASU) No. 2011-08, “Intangibles — Goodwill and Other (Topic 350): Testing Goodwill for Impairment” (“ASU Topic 350”)  permits an entity to make a qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying amount before applying a two-step goodwill impairment test. This step is referred to as “step zero.” If an entity concludes that it is not likely that the fair value of the reporting unit is less than its carrying amount, it would not be required to perform a two-step impairment test for that reporting unit. The guidance lists certain factors to consider when making the qualitative assessment. In the event that the conclusion requires the two-step test, the first step compares the fair value of a reporting unit to its carrying value. The fair value is determined using a discounted cash flow analysis (income approach) and a comparable company analysis (market approach). The second step is performed only if the carrying value exceeds the fair value determined in step one.
	We determine the fair value of a reporting unit by using an equal weighting of estimated fair value using the income and market approaches. The income approach uses estimated future cash flows and terminal values. Assumptions used to determine future cash flows include: forecasted growth rates; profit margins; longer-term historical performance and cost of capital. Our assumptions are consistent with our internal projections and operating plans. Our internal projections and operating plans and thus our estimated fair value may be impacted by the overall economic environment. Our assumptions may change as a result of, among other things: changes in our estimated business future growth rate; profit margin; long-term outlook; market valuations of comparable companies; the ability to retain key personnel; changes in operating segments; competitive environment and weighted average cost of capital. Under the market approach for determining fair value, we adopt certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk or the risks inherent in the inputs to the valuation. Inputs to the valuation can be readily observable, market-corroborated or unobservable. Wherever possible, we use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs; however, due to the use of our own assumptions about the inputs in measuring fair value, our goodwill impairment testing also makes use of significant unobservable inputs. The fair value of our reporting units is also impacted by our overall market capitalization and may be impacted by volatility in our stock price and assumed control premium, among other things.
	If the carrying value exceeds the fair value determined in step one, step two is performed. Step two requires us to calculate the implied fair value of a reporting unit’s goodwill. This is accomplished by performing a hypothetical purchase price allocation for the reporting unit as of the measurement date, similar to the purchase price allocation used when purchasing a new business. We estimate the fair value of the reporting unit’s assets and liabilities and deem the residual fair value of the reporting unit as the implied fair value of the reporting unit’s goodwill. To the extent that the implied fair value of goodwill is below our carrying value, an impairment charge is recorded to reduce the carrying value to the implied fair value. The resulting impairment charge may be significantly higher than the difference between the carrying value and fair value determined in step one as a result of fair value assigned to other assets and liabilities in the hypothetical purchase price allocation completed in step two.
	Intangible assets with definite lives are amortized based on the estimated period of consumption. We review these assets for impairment whenever events or changes in circumstances indicate an asset’s carrying value may not be recoverable.
	Further information regarding our goodwill balances and current year impairment testing and review can be found in Note 6 — Goodwill and Intangible Assets, Net.
	Revenue Recognition
	We recognize revenues when evidence of an arrangement exists, the price of work is fixed or determinable, work is performed and collectability is reasonably assured. We generate the majority of our revenues from providing services under the following types of arrangements: time and material (including units of production), fixed-fee and milestone based.
	For our time and material arrangements, revenue is recognized based on the number of hours worked by our client-service employees at the contracted bill rates or on units of service delivered, which are reviewed on a periodic basis. Additionally, revenue is recognized on our units of production arrangements in a similar manner based on measures such as the number of items processed at agreed-upon rates.
	With our fixed-fee arrangements, we are contracted to complete a pre-determined set of professional services for a pre-determined fee. However, the fee and engagement scope can be adjusted based on a mutual agreement between us and the client. In many cases, the recording of fixed revenue amounts requires us to make an estimate of the total amount of work to be performed, and revenues are then recognized as efforts are expended based on (i) objectively determinable output measures, (ii) input measures if output measures are not reliable or (iii) the straight-line method over the term of the arrangement.
	In milestone-based arrangements, fees are tied to the completion of contractually defined outcomes. In many cases, this fee is earned in addition to an hourly or fixed fee, but is not recognized until certain contractual milestones or outcomes are met. Variations in our quarterly or yearly revenues and resulting operating profit margins may occur depending on the timing of such contractual outcomes and our ability to consider these revenues earned and realized.
	In connection with recording revenues, estimates and assumptions are required in determining the expected conversion of the revenues to cash. We may provide multiple services under the terms of an arrangement and are required to assess whether one or more units of accounting are present.
	Reimbursable expenses for our engagements include travel, out-of-pocket and independent contractor costs. Such expenses are included in our revenues as applicable and are passed through to other cost of services. Typically, reimbursable expenses are recognized as revenue during the period in which the expense is incurred.
	Revenues recognized for services performed but not yet billed are recorded as unbilled receivables on our consolidated balance sheet. Advance payments and retainers are recorded as deferred revenue and are recognized as services are provided. Any taxes assessed on revenues relating to services provided to our clients are recorded on a net basis.
	Legal
	We record legal expenses as incurred. Potential exposures related to unfavorable outcomes of legal matters are accrued for when they become probable and reasonably estimable.
	Share-Based Compensation
	We recognize the cost resulting from all share-based compensation arrangements, including stock options, restricted stock awards and restricted stock units that we grant under our long-term incentive plans in our consolidated financial statements based on their grant date fair value. The expense is recognized over the requisite service period or performance period of the award. Awards with a graded vesting period based on service are expensed on a straight-line basis for the entire award. Awards with performance-based vesting requiring the achievement of a specific financial performance goal at the end of the performance period and required service period are recognized over the performance period.  Each reporting period, we reassess the probability of achieving the respective performance goal. If the goals are not expected to be met, no compensation cost is recognized and any previously recognized amount recorded is reversed. If the award contains market-based vesting conditions, the compensation cost is based on the grant date fair value and expected achievement of market condition and is not subsequently reversed if it is later determined that the condition is not likely to be met or are expected to be lower than initial expectations.
	Stock options grant date fair value is based on the Black-Scholes-Merton pricing model. The Black-Scholes-Merton option-pricing model requires judgmental assumptions including volatility and expected term, both based on historical experience. The risk-free interest rate is based on U.S. Treasury interest rates whose term is consistent with the expected term of the option.
	Restricted stock and restricted stock unit fair value is based on the closing price of the underlying stock on the date of the grant.
	At the time of the grant, we make an estimation of expected forfeitures based upon past experience. Compensation expense is recorded only for those awards expected to vest. Our forfeiture rate is reviewed periodically and may change from year to year.
	Income Taxes
	We account for income taxes in accordance with FASB ASC Topic 740, “Income Taxes”. Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits reflect management’s best assessment of estimated tax obligations. We are subject to income taxes in the United States and a number of foreign jurisdictions. Significant judgments and estimates are required in determining the consolidated income tax expense.
	Deferred income taxes arise from temporary differences between the tax and financial statement recognition of revenue and expense. In evaluating our ability to recover our deferred tax assets within the jurisdiction from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. When appropriate, we evaluate the need for a valuation allowance to reduce deferred tax assets. The evaluation of the need for a valuation allowance requires management judgment and could impact our financial results and effective tax rate. We record interest and penalties as a component of our income tax provision. Such amounts were not material during any of the years ended December 31, 2014, 2013 or 2012.
	Treasury Stock
	We account for treasury stock transactions at cost and for the reissuance of treasury stock using the average cost method.
	Foreign Currency
	The balance sheets of our foreign subsidiaries are translated into United States dollars using the period-end exchange rates, and revenues and expenses are translated using the average exchange rates for each period. The resulting translation gains or losses are recorded in stockholders’ equity as a component of accumulated other comprehensive loss. Gains and losses resulting from foreign exchange transactions are recorded in the consolidated statements of comprehensive income (loss). Such amounts were $0.2 million gain for the year ended December 31, 2014, and $0.4 million and $0.1 million losses for 2013 and 2012, respectively.
	Interest Rate Derivatives
	We maintain interest rate swaps that are designated as cash flow hedges to manage the market risk from changes in interest rates on a portion of our variable rate loans. We recognize derivative instruments which are cash flow hedges as assets or liabilities at fair value, with the related gain or loss reflected within stockholders’ equity as a component of accumulated other comprehensive income (loss). Such instruments are recorded at fair value at each reporting date on a recurring basis. Changes in fair value as calculated are recorded in other comprehensive income (loss) (see Note 12 — Derivatives and Hedging Activity) only to the extent of effectiveness. Any ineffectiveness on the instruments would be recognized in the consolidated statements of comprehensive income (loss). The differentials to be received or paid under the instruments are recognized in earnings over the life of the contract as adjustments to interest expense. During the years ended December 31, 2014, 2013 and 2012, we recorded no gain or loss due to ineffectiveness and recorded $0.4 million, $0.2 million and $0.5 million, respectively, in interest expense associated with differentials paid under the instrument. Based on the net fair value of our interest rate swaps at December 31, 2014, we expect no material expense related to these instruments in the year ending December 31, 2015.
	Accounting for Business Combinations
	We use the acquisition method of accounting under the authoritative guidance on business combinations. Each acquired company’s operating results are included in our consolidated financial statements starting on the date of acquisition. The purchase price is equivalent to the fair value of consideration transferred. Tangible and identifiable intangible assets acquired and liabilities assumed as of the date of acquisition are recorded at fair value as of the acquisition date. Goodwill is recognized for the excess of purchase price over the net fair value of assets acquired and liabilities assumed. Contingent consideration, which is primarily based on the business achieving certain performance targets, is recognized at its fair value on the acquisition date, and changes in fair value are recognized in earnings until settled. For the years ended December 31, 2014, 2013 and 2012, we recorded $5.0 million and $5.4 million of operating benefit, and $1.1 million of operating costs, respectively, for these fair value adjustments.  The fair value of the contingent consideration is based on our estimations of future performance of the business and is determined based on Level 3 observable inputs. Further information regarding our contingent acquisition liability balances can be found in Note 17 — Fair Value.
	Impairment of Long-Lived Assets
We review long-lived assets such as property and equipment and definite-lived intangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. These events or changes in circumstances may include a significant deterioration of operating results, changes in business plans such as a disposition, or changes in anticipated future cash flows. If an impairment indicator is present, we evaluate recoverability of assets to be held and used by a comparison of the carrying value of the assets to future undiscounted net cash flows expected to be generated by the assets. We group assets at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows generated by other asset groups. If the total of the expected undiscounted future cash flows is less than the carrying amount of the asset group, we estimate the fair value of the asset group to determine whether an impairment loss should be recognized. An impairment loss is recognized for the difference between the fair value and carrying value of the asset group.
Comprehensive Income
Comprehensive income consists of net income, unrealized foreign currency translation adjustments and unrealized net loss and/or gain on interest rate derivatives.
Discontinued operations
The results of operations for business components meeting the criteria for discontinued operations are presented as such in our consolidated statements of comprehensive income (loss). For periods prior to the designation as discontinued operations, we reclassify the results of operations to discontinued operations.  In addition, the net gain or loss (including any impairment loss) on the disposal is presented as discontinued operations when recognized. The change in presentation for discontinued operations does not have any impact on our financial condition or results of operations. We combine the cash flows and assets and liabilities attributable to discontinued operations with the respective cash flows and assets and liabilities from continuing operations to the extent that they are immaterial. On July 8, 2013, we sold the United Kingdom financial services advisory business within our Financial, Risk & Compliance segment.  All significant cash flows from this business were eliminated as a result of the sale, and we have no continuing involvement in the operations of this business, and as such, the results of operations for this business have been reclassified and presented as discontinued operations for all periods presented. See Note 4 – Dispositions and Discontinued Operations for further information.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2014
Acquisitions [Abstract]
Acquisitions	3.ACQUISITIONS
	2014 Acquisitions
	On May 14, 2014, we acquired Cymetrix Corporation to expand our healthcare business. Cymetrix specializes in providing business process management services to hospital and healthcare networks. This acquisition included approximately 600 professionals and was integrated into the Technology, Data & Process group within our Healthcare segment.  We paid $76.9 million, including selling costs, in cash at closing. During the third quarter 2014, we paid approximately $1.4 million for closing date working capital adjustments. The selling stockholders of Cymetrix can also earn up to an additional $25.0 million based on the business achieving certain performance targets over the period beginning November 1, 2014 and ending October 31, 2015. The additional payment is due within 90 days of the end of the performance period.  The deferred contingent consideration is recorded at fair value for each reporting period (see Note 17 – Fair Value).  We estimated the fair value of the deferred contingent consideration on the closing date to be $20.3 million which was recorded in other non-current liabilities at net present value using a risk-adjusted discount rate. During the year ended December 31, 2014, acquisition costs relating to this acquisition totaling $1.2 million were expensed as incurred and included within general and administrative expenses. We have preliminarily estimated the fair value of the assets and liabilities for Cymetrix. We are still in the process of finalizing closing date working capital adjustments and tax related balances. In addition, as we complete our review we may come across additional closing date adjustments not anticipated.  These adjustments may revise our preliminary purchase price allocation.  The excess of the purchase price over the aggregate fair values was recorded as goodwill as required by ASC 805 – Accounting for Business Combinations and Non-controlling Interests.  Post-acquisition adjustments relating to facts and circumstances at the closing date, if any, will be recorded to goodwill when identified for a period not exceeding 12 months.  The preliminary opening balance sheet for Cymetrix is as follows (in thousands):
	Cash	$	1,357
	Accounts receivable, net		11,283
	Other current assets		1,563
	Property and equipment, net		11,824
	Goodwill		71,335
	Intangible assets		18,000
	Total assets	$	115,362
	Total liabilities	$	36,995
	The beginning fair value balance of the Cymetrix intangible assets consisted of the following (amounts in thousands, except year data):
	Category	Useful Life (years)		Amount
	Trade name	4	$	1,900
	Customer lists and relationships	8.3		16,100
			$	18,000
	Also, during 2014, we acquired three small businesses, Leerink Swann Consulting (Leerink) in April 2014, HLP Consulting PTE. LTD (HLP) in June 2014 and Assay Healthcare Solutions, LLC (Assay) in August 2014 for an aggregate purchase price of $11.8 million, of which $9.3 million was paid in cash at closing. Leerink and Assay were integrated into our Healthcare segment, and HLP was integrated into our Disputes, Investigations & Economics segment.
	2013 Acquisition
	On July 1, 2013, we acquired the assets of The Anson Group, LLC for an aggregate purchase price of $5.0 million, of which $3.0 million was paid in cash at closing and $2.0 million will be paid in deferred cash payments in three equal installments on each of the first, second and third anniversaries of closing. During the year ended December 31, 2014, we paid $0.3 million of the contingent consideration as well as recorded $0.2 million of other operating benefit reflecting a fair value adjustment (see Note 17 – Fair Value) of the contingent consideration.  During the third quarter of 2014, a payment of $0.7 million was made toward the deferred acquisition liability. Anson can also earn up to $3.0 million of additional payments based on the business achieving certain performance targets over a three-year period following the closing. The deferred contingent consideration is recorded at fair value for each reporting period (see Note 17 – Fair Value). Anson was integrated into our Disputes, Investigations & Economics segment.
	2012 Acquisitions
	On December 3, 2012, we acquired the assets of PFEC LLC (doing business as AFE Consulting) to expand our economics consulting business and was integrated into our Disputes, Investigations & Economics segment. We paid $15.0 million in cash at closing, issued $2.5 million in common stock at closing, and have settled the entire $5.0 million in deferred cash payments that were payable on the first and second anniversaries of the closing date. We estimated the fair value of common stock to be $2.2 million at the time of closing.  AFE can also earn up to $10.0 million in one additional payment based on the business achieving certain performance targets over the four calendar years following the year of closing.  The additional payment is due on the fourth anniversary of closing.  We estimated the fair value of the contingent consideration on the date of closing to be $4.4 million. The common stock and deferred payments were recorded at fair value, and the deferred payments were recorded in other current and non-current liabilities at net present value.  During the years ended December 31, 2014 and 2013, we recorded $2.6 million and $2.2 million, respectively, of other operating benefit reflecting a fair value adjustment (see Note 17 – Fair Value) to reduce the estimated contingent consideration.  As part of the purchase price allocation, we recorded $3.1 million in identifiable intangible assets and $23.4 million in goodwill.
	On October 2, 2012, we acquired the assets of Easton Associates, LLC to expand our life science services in our healthcare advisory business within our Healthcare segment. We paid $8.0 million in cash at closing and recorded a $4.1 million deferred liability payable in three equal installments on the first, second and third anniversary of closing.  We paid $1.4 million of the deferred consideration in both the fourth quarter 2014 and 2013.  As part of the purchase price allocation, we recorded $0.1 million in property and equipment, $1.9 million in identifiable intangible assets and $9.8 million in goodwill.
	On August 24, 2012, we acquired the assets of Empath Consulting, Inc. to expand our healthcare advisory services within our Healthcare segment.  We paid $0.7 million in cash at closing and $0.8 million was subsequently paid in the third quarter 2013.  Empath can earn up to $4.5 million in additional payments based on the business achieving certain performance targets over the 46 month period after closing. We estimated the fair value of the contingent consideration on the date of purchase to be $3.2 million. The deferred payments were recorded as other current and non-current liabilities. During the years ended December 31, 2014 and 2013, we recorded $1.8 million and $0.9 million, respectively, of other operating benefit reflecting a fair value adjustment (see Note 17 – Fair Value) to reduce the estimated contingent consideration obligation.  As part of the purchase price allocation, we recorded $0.7 million in other assets, $0.1 million in identifiable intangible assets and $3.9 million in goodwill.
	On July 2, 2012, we acquired the assets of Pike Research, LLC to expand our energy advisory services within our Energy segment. We paid $1.9 million in cash at closing and $0.7 million was subsequently paid during the year ended December 31, 2013.  Pike Research can earn up to $4.0 million of additional payments based on the business achieving certain performance targets over the three-year period after closing. We estimated the fair value of the contingent consideration on the date of purchase to be $2.5 million. The deferred payments were recorded as other current and non-current liabilities.  During the years ended December 31, 2014 and 2013, we recorded $0.3 million and $2.3 million, respectively, of other operating benefit reflecting a fair value adjustment (see Note 17 – Fair Value) to reduce the estimated contingent consideration obligation.  As part of the purchase price allocation, we recorded $0.4 million in current assets, $0.7 million in liabilities, $0.1 million in identifiable intangible assets and $5.3 million in goodwill.
	Also, in November 2012, we acquired one small business, for a purchase price of $4.2 million, of which $2.6 million was paid in cash at closing. The acquired business was integrated into our Disputes, Investigations & Economics segment.
	Unaudited Pro Forma Information
	The following supplemental pro forma financial information was prepared as if the 2014 and 2013 acquisitions noted above had occurred as of January 1, 2013. The following table was prepared for comparative purposes only and does not purport to be indicative of what would have occurred had the acquisitions been made at that time or of results which may occur in the future (in thousands, except per share data).
		For the year ended
		December 31,
		2014			2013
	Total revenues	$	884,970		$	908,018
	Net income (loss) from continuing operations	$	-37,123		$	56,246
	Basic net income (loss) from continuing operations per basic share	$	-0.76		$	1.13
	Shares used in computing net income (loss) per basic share		48,741			49,771
	Diluted net income (loss) from continuing operations per diluted share	$	-0.76		$	1.10
	Shares used in computing net income (loss) per diluted share		48,741			50,951

Dispositions_And_Discontinued_

Dispositions And Discontinued Operations	12 Months Ended
	Dec. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]
Dispositions And Discontinued Operations	4.DISPOSITIONS AND DISCONTINUED OPERATIONS
	On October 1, 2014, we sold a portion of our healthcare technology business within our Healthcare segment.  We received $1.5 million in cash, net of selling costs, for the sale.  As part of the transaction, we recorded a $0.5 million gain in other operating benefit, which reflected a reduction of $0.8 million in goodwill, $0.1 million in intangible assets, and $0.2 million in other assets.  The healthcare technology business remains a continuing operation and, as such, this transaction did not qualify as discontinued operations.
	On July 8, 2013, we sold the United Kingdom financial services advisory business within our Financial, Risk & Compliance segment.  The transaction included the transition of 45 employees to the purchaser.  As part of the transaction, we received $1.4 million in cash, net of selling costs and a holdback for post-closing working capital adjustments. The sale agreement also allowed for contingent deferred proceeds of $2.5 million payable to us on the 13th month anniversary of the closing date based on the achievement of certain performance targets.  The performance targets were not achieved, and there were no contingent deferred proceeds paid to us. During the first quarter of 2014, we recorded a $0.5 million gain which was included in income from discontinued operations, net of tax, related to the settlement of the holdback mentioned above.
	The operating results of the United Kingdom financial services advisory business have been reported in accordance with ASC Topic 205 as “discontinued operations.”  All other operations are considered “continuing operations.”  Summarized operating results of the discontinued operations are presented in the following table (in thousands):
		For the year ended
		December 31,
		2014		2013		2012
	Revenues before reimbursements	$	-	$	6,904	$	21,193
	Total revenues	$	-	$	9,035	$	26,444
	Income (loss) from discontinued operations before income tax expense	$	509	$	-2,680	$	2,605
	Income tax expense from discontinued operations	$	-	$	239	$	668
	Income (loss) from discontinued operations, net of tax	$	509	$	-2,919	$	1,937
	On January 31, 2013, we sold a portion of the economics business within our Disputes, Investigations & Economics segment.  This disposition facilitated the transition of four experts and certain engagements and approximately 40 other employees to the purchaser.  We received $15.6 million in cash, net of selling costs, for the sale.  As part of the transaction, we recorded a $1.7 million gain in other operating benefit, which reflected a reduction of $7.4 million in goodwill and $6.5 million in working capital. The economics business remains a continuing operation and, as such, this transaction did not qualify as discontinued operations.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Segment Information	5.SEGMENT INFORMATION
	Our business is assessed and resources are allocated based on the following four reportable segments:
	•The Disputes, Investigations & Economics segment provides accounting, financial and economic analysis, as well as discovery support, data management and analytics, on a wide range of legal and business issues including disputes, investigations and regulatory matters. The clients of this segment are principally companies, along with their in-house counsel and law firms, as well as accounting firms, corporate boards and government agencies.
	•The Financial, Risk & Compliance segment provides strategic, operational, valuation, risk management, investigative and compliance consulting to clients in the highly regulated financial services industry, including major financial and insurance institutions. This segment also provides anti-corruption solutions and anti-money laundering, valuation and restructuring consulting, litigation support and tax compliance services to clients in a broad variety of industries.
	•The Healthcare segment provides strategic, operational, performance improvement and business process management services which includes solutions to clients across the healthcare landscape including revenue cycle management, health systems, physician practice groups, health insurance providers, government and life sciences companies. We assist clients on issues such as the shift to an outcomes and value-based reimbursements model, ongoing industry consolidation and reorganization, and the required implementation of a new medical coding system.
	•The Energy segment provides management advisory services to utility, government and commercial clients. We focus on creating value for our clients by assisting in their implementation of new business models and creating sustainable excellence on issues ranging from asset investment management, integrated resource planning, renewables, distributed generation, energy efficiency and outage management and restoration.
	The following information includes segment revenues before reimbursements, segment total revenues and segment operating profit. Certain unallocated expense amounts related to specific reporting segments have been excluded from segment operating profit to be consistent with the information used by management to evaluate segment performance. Segment operating profit represents total revenues less costs of services excluding long-term compensation expense attributable to consultants. Long-term compensation expense attributable to consultants includes share-based compensation expense and compensation expense attributed to certain retention incentives (see Note 9 — Share-based Compensation Expense and Note 10 — Supplemental Consolidated Balance Sheet Information).   During the year ended December 31, 2013, we disposed of a portion of our Financial, Risk & Compliance segment and the results of operations from the disposed business have been classified as discontinued operations.  As such, the segment information reflects results of segment operations on a continuing basis (see Note 4 – Dispositions and Discontinued Operations).
	The information presented does not necessarily reflect the results of segment operations that would have occurred had the segments been stand-alone businesses.
	Information on the segment operations has been summarized as follows (in thousands):
			For the year ended
			December 31,
			2014			2013		2012
	Revenues before reimbursements:
	Disputes, Investigations & Economics		$	309,570		$	301,545	$	340,036
	Financial, Risk & Compliance			135,498			155,656		141,421
	Healthcare			223,817			182,783		151,065
	Energy			97,667			94,449		89,668
	Total revenues before reimbursements		$	766,552		$	734,433	$	722,190
	Total revenues:
	Disputes, Investigations & Economics		$	333,273		$	326,130	$	364,426
	Financial, Risk & Compliance			162,637			190,116		177,722
	Healthcare			248,095			205,215		170,150
	Energy			115,612			114,124		105,899
	Total revenues		$	859,617		$	835,585	$	818,197
	Segment operating profit:
	Disputes, Investigations & Economics		$	104,466		$	99,828	$	123,288
	Financial, Risk & Compliance			58,929			62,487		55,926
	Healthcare			65,104			67,696		50,959
	Energy			30,507			31,280		31,721
	Total segment operating profit			259,006			261,291		261,894
	Segment reconciliation to income (loss) from continuing operations before income tax (benefit) expense:
	Reconciling items:
	General and administrative expenses			136,057			127,079		141,195
	Depreciation expense			19,580			16,180		14,986
	Amortization expense			5,959			6,826		6,767
	Other operating costs (benefit), net			118,580			-6,766		1,645
	Long-term compensation expense attributable to consultants (including share-based compensation expense)			11,611			14,825		16,048
	Operating income (loss)			-32,781			103,147		81,253
	Interest and other expense, net			5,477			4,145		4,503
	Income (loss) from continuing operations before income tax (benefit) expense		$	-38,258		$	99,002	$	76,750
	Total assets allocated by segment include accounts receivable (net), certain retention-related prepaid assets, intangible assets and goodwill. The remaining assets are unallocated. Allocated assets by segment were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Disputes, Investigations & Economics	$	322,014		$	443,417
	Financial, Risk & Compliance		83,834			89,498
	Healthcare		289,229			173,066
	Energy		103,218			101,851
	Unallocated assets		105,198			96,365
	Total assets	$	903,493		$	904,197
	Geographic data
	Total revenues and assets by geographic region were as follows (shown in thousands):
			For the year ended
			December 31,
			2014			2013		2012
	Total revenue:
	United States		$	788,422		$	777,108	$	754,925
	United Kingdom			56,536			44,530		50,446
	Other			14,659			13,947		12,826
	Total		$	859,617		$	835,585	$	818,197
			December 31,			December 31,
	Total assets:		2014			2013
	United States		$	810,262		$	773,331
	United Kingdom			74,316			100,603
	Other			18,915			30,263
Total		$	903,493		$	904,197

Goodwill_And_Intangible_Assets

Goodwill And Intangible Assets, Net	12 Months Ended
	Dec. 31, 2014
Goodwill And Intangible Assets, Net [Abstract]
Goodwill And Intangible Assets, Net	6.GOODWILL AND INTANGIBLE ASSETS, NET
	Goodwill consisted of (in thousands):
		December 31,		December 31,
		2014		2013
	Goodwill	$	695,561	$	620,768
	Less - accumulated amortization		-5,425		-5,425
	Less - accumulated goodwill impairment		-122,045		-
	Goodwill, net	$	568,091	$	615,343
	Changes made to our goodwill balances during the year ended December 31, 2014 and 2013 were as follows (in thousands):
		Disputes,		Financial,
		Investigations		Risk &						Total
		& Economics		Compliance		Healthcare		Energy		Company
	Goodwill, net as of January 1, 2013	$	357,091	$	56,982	$	129,231	$	76,628	$	619,932
	Acquisitions		4,302		-		-		-		4,302
	Adjustments		-156		-6		-40		-		-202
	Disposition		-7,350		-1,519		-		-		-8,869
	Foreign currency		334		-127		-		-27		180
	Goodwill, net as of December 31, 2013	$	354,221	$	55,330	$	129,191	$	76,601	$	615,343
	Acquisitions		3,100		-		76,068		-		79,168
	Impairment		-122,045		-		-		-		-122,045
	Adjustments		-154		-35		-12		-		-201
	Disposition		-		-		-778		-		-778
	Foreign currency		-3,392		25		-		-29		-3,396
	Goodwill, net as of December 31, 2014	$	231,730	$	55,320	$	204,469	$	76,572	$	568,091
	We performed our annual goodwill impairment test as of May 31, 2014 (see Note 2 – Summary of Significant Accounting Policies for further information on goodwill testing procedures).  The key assumptions used in our annual impairment test included:  internal projections completed during our most recent quarterly forecasting process; profit margin improvement generally consistent with our longer-term historical performance; assumptions regarding contingent revenue; revenue growth rates consistent with our longer-term historical performance also considering our near term investment plans and growth objectives; discount rates that were determined based on comparable discount rates for our peer group; company specific risk considerations; and cost of capital based on our historical experience. Each reporting unit’s estimated fair value depends on various factors including its expected ability to achieve profitable growth.
	Based on our assumptions, the estimated fair value exceeded the net asset carrying value for our Healthcare, Energy and Financial, Risk & Compliance reporting units as of May 31, 2014.  Accordingly, there was no indication of impairment of our goodwill for these reporting units.  Our Healthcare, Energy and Financial, Risk & Compliance reporting units exceeded their net asset carrying values by 41%,  41% and 65%, respectively.
	Based on our impairment test as of May 31, 2014, the estimated fair value of our Disputes, Investigations & Economics reporting unit was less than the net asset carrying value by approximately 1%.  As such, we performed the second step of the goodwill impairment test on this reporting unit.  The second step indicated that the current fair value of the reporting unit’s identifiable intangible assets based upon the hypothetical purchase price allocation mentioned above significantly exceeded the carrying value of those assets.   As such, a pre-tax goodwill impairment of $122.0 million was recorded as a separate line item within other operating costs (benefit) within the audited consolidated statements of comprehensive income (loss).  The impairment was non-cash in nature and did not affect our current liquidity, cash flows, borrowing capability or operations; nor did it impact the debt covenants under our credit agreement. Additionally, we tested the intangible and tangible assets related to this reporting unit based on the related undiscounted future cash flows and concluded that no impairment for these assets existed.
	Historically, our May 31, 2013 and 2012 impairment tests of our Disputes, Investigations & Economics segment indicated that the reporting unit exceeded its carrying value by 7% and 18%, respectively. Given the relatively lower percentage of excess of carrying value and the decreasing trend in the estimated fair value of this reporting unit, we indicated in previous periodic reports filed with the SEC that if the estimated fair value decreased in future periods, an impairment could result.  Also, due to the relatively low excess carrying value, we have evaluated our Disputes, Investigations, & Economics each quarter since our May 31, 2013 impairment test, and each time, concluded that it was not more likely than not that the fair value of the reporting unit had fallen below the carrying value and as a result, the two step impairment test was not performed prior to the May 2014 annual impairment test.
	In completing our annual impairment test at May 31, 2014, we considered historical trends as we updated projections for the business.  While Disputes, Investigations & Economics revenue before reimbursements (RBR) during the three months ended June 30, 2014 was consistent with the corresponding period in 2013 and segment operating profit as a percentage of RBR (margins) was slightly improved, the results were lower than assumed in previous projections.  At the same time, declines in our projections at that time indicated results were not expected to return to levels included in previous projections.  As a result, as we finalized our longer term growth assumptions for our Disputes, Investigations & Economics segment (as well as our other segments), we reduced our long-term RBR growth rates and also lowered our expectations for margin improvements in the future, partly due to the anticipated change in mix of services within the segment.  We also considered contingent events not included in our projections that would potentially improve RBR and margin performance, and included those factors in our impairment test.  However, the impact of lower long-term RBR and margin growth combined with these other contingent improvement considerations resulted in a lower overall projection from previous projections for the segment.
	We have reviewed performance expectations of our most recent financial projections for the full year 2015 and considered the impact of changes to our business and market conditions on our goodwill valuation and determined that no events or conditions have occurred or are expected to occur that would trigger a need to perform an interim goodwill impairment test.  In addition, we performed a sensitivity analysis based on current projections and evaluated various likelihoods of meeting the projections and the potential impact on the fair value.  We will continue to monitor the factors and key assumptions used in determining the fair value of each of our reporting units. There can be no assurance that goodwill or intangible assets will not be further impaired in the future. We will perform our next annual goodwill impairment test on May 31, 2015.
	As we review our portfolio of services in the future, we may exit certain markets or reposition certain service offerings within our business. Consistent with past evaluations, further evaluations may result in redefining our operating segments and may impact a significant portion of one or more of our reporting units. As noted above, if such actions occur, they may be considered triggering events that would result in our performing an interim impairment test of our goodwill and an impairment test of our intangible assets.
	Intangible assets consisted of (in thousands):
		December 31,		December 31,
		2014		2013
	Intangible assets:
	Customer lists and relationships	$	95,616	$	79,514
	Non-compete agreements		22,326		22,557
	Other		26,520		24,297
	Intangible assets, at cost		144,462		126,368
	Less: accumulated amortization		-117,960		-115,590
	Intangible assets, net	$	26,502	$	10,778
	Our intangible assets have estimated remaining useful lives ranging up to ten years which approximate the estimated periods of consumption. We will amortize the remaining net book values of intangible assets over their remaining useful lives.  During the year ended December 31, 2014, we acquired $18.0 million of intangible assets as part of our Cymetrix acquisition (see Note 3 – Acquisitions). At December 31, 2014, our intangible assets consisted of the following (in thousands, except year data):
		Weighted Average
	Category	Remaining Years		Amount
	Customer lists and relationships, net		6.6	$	21,813
	Non-compete agreements, net		3.8		1,384
	Other intangible assets, net		3.1		3,305
	Total intangible assets, net		6	$	26,502
	Total amortization expense was $6.0 million, $6.8 million and $6.8 million for the year ended December 31, 2014, 2013 and 2012, respectively. Below is the estimated annual aggregate amortization expense to be recorded in future years related to intangible assets at December 31, 2014  (in thousands):
	Year Ending December 31,	Amount
	2015	$	7,235
	2016		5,647
	2017		4,322
	2018		3,146
	2019		1,976
	Thereafter		4,176
	Total	$	26,502

Net_Income_Loss_Per_Share_EPS

Net Income (Loss) Per Share (EPS)	12 Months Ended
	Dec. 31, 2014
Net Income (Loss) Per Share (EPS) [Abstract]
Net Income Per Share (EPS)	7.NET INCOME (LOSS) PER SHARE (EPS)
	The components of basic and diluted shares (in thousands and based on the weighted average days outstanding for the periods) are as follows:
		For the year ended
		December 31,
		2014	2013	2012
	Basic shares	48,741	49,771	50,894
	Employee stock options	-	117	92
	Restricted stock and restricted stock units	-	949	562
	Contingently issuable shares	-	114	24
	Diluted shares	48,741	50,951	51,572
	Antidilutive shares1	1,338	349	589
	(1)   Stock options with exercise prices greater than the average market price of our common stock during the respective time periods were excluded from the computation of diluted shares because the impact of including the shares subject to these stock options in the diluted share calculation would have been antidilutive.
	Due to a net loss applicable to common shareholders for the year ended December 31, 2014, we excluded 1,235 in potentially dilutive securities from the computation as their effect would have been antidilutive.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity [Abstract]
Stockholders' Equity	8.STOCKHOLDERS’ EQUITY
	For the year ended December 31, 2014
	During the year ended December 31, 2014, we repurchased 1,653,315 shares of our common stock at a weighted average price of $16.50. During the year ended December 31, 2014, $2.6 million relating to accrued incentive compensation liabilities for the 2013 performance year was recorded as additional paid-in capital at the time of grant of the restricted stock units in 2014.
	For the year ended December 31, 2013
	During the year ended December 31, 2013, we repurchased 2,059,220 shares of our common stock at a weighted average price of $13.76. During the year ended December 31, 2013, $2.3 million relating to accrued incentive compensation liabilities for the 2012 performance year was recorded as additional paid-in capital at the time of grant of the restricted stock units in 2013.
	For the year ended December 31, 2012
	During the year ended December 31, 2012, we repurchased 1,601,906 shares of our common stock at a weighted average price of $11.78. During the year ended December 31, 2012, $0.8 million relating to incentive compensation for the 2011 performance year to be settled in the form of restricted stock units or deferred cash at the employee’s election was recorded as additional paid-in capital upon their election to receive restricted stock units.

ShareBased_Compensation_Expens

Share-Based Compensation Expense	12 Months Ended
	Dec. 31, 2014
Share-Based Compensation Expense [Abstract]
Share-Based Compensation Expense	9.SHARE-BASED COMPENSATION EXPENSE
	Summary
	On May 22, 2012, our shareholders approved the Navigant Consulting, Inc. 2012 Long-Term Incentive Plan (2012 Plan). The purposes of the 2012 Plan are: (i) to align the interests of our shareholders and recipients of awards under the 2012 Plan by increasing the proprietary interest of such recipients in our growth and success; (ii) to attract and retain officers, other employees, non-employee directors, consultants, independent contractors and agents; and (iii) to motivate such persons to act in the long-term best interests of our shareholders. The 2012 Plan allows for awards of stock options, stock appreciation rights, restricted stock and restricted stock units, and performance awards.
	The maximum number of shares of our common stock available for awards under the 2012 Plan is 6.2 million, reduced by the number of shares of our common stock subject to awards granted under 2005 Long-Term Incentive Plan, as amended on or after January 1, 2012.
	As of December 31, 2014, there were 3.0 million shares available for future issuance under the 2012 Plan.
	We record share-based compensation expense for restricted stock, restricted stock units, stock options and the discount given on employee stock purchase plan transactions. Our long-term incentive program for our senior-level consultants currently provides for either an award of restricted stock units or deferred cash. The value of the awards granted to eligible recipients is determined based on our financial performance for the prior fiscal year.  In 2014, we recorded $1.0 million in other compensation expense. The share- based expense attributable to this program has not been included in the table below as the final form of the grant has not yet been determined. These awards will have an approximate grant date fair value of $4.0 million and will have a three year cliff vesting schedule from grant date beginning in 2015.
	The following table shows the amounts attributable to each category (in thousands):
			For the year ended
			December 31,
			2014			2013			2012
	Amortization of restricted stock and restricted stock unit awards		$	8,283		$	9,977		$	8,513
	Amortization of stock option awards			758			828			1,216
	Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan			275			233			247
	Total share-based compensation expense		$	9,316		$	11,038		$	9,976
	Total share-based compensation expense consisted of the following (in thousands):
			For the year ended
			December 31,
			2014			2013			2012
	Cost of services before reimbursable expenses		$	4,965		$	5,854		$	5,646
	General and administrative expenses			4,351			5,184			4,330
	Total share-based compensation expense		$	9,316		$	11,038		$	9,976
	Share-based compensation expense attributable to client-service employees was included in cost of services before reimbursable expenses. Share-based compensation expense attributable to corporate management and support personnel was included in general and administrative expenses. Amounts are presented on a continuing operations basis.
	Income tax (benefit) expense recorded in the accompanying consolidated statements of comprehensive income (loss) related to share-based compensation expense for the years ended December 31, 2014 and 2013 were an expense of $0.3 million and a benefit of $4.9 million, respectively.
	At December 31, 2014, we had $11.6 million of total compensation costs related to unvested share-based awards that have not been recognized as share-based compensation expense. The compensation costs will be recognized as an expense over the remaining vesting periods. The weighted average remaining vesting period is approximately two years. During the year ended December 31, 2014, we granted an aggregate of 870,482 share-based awards, consisting of restricted stock units and stock options with an aggregate fair value of $14.6 million at the time of grant.  These grants include certain awards that vest based on relative achievement of pre-established performance criteria.
	Restricted Stock and Restricted Stock Units Outstanding
	The measurement price of our restricted stock and restricted stock units is the market price of our common stock at the date of grant of the awards.
	At December 31, 2014, we had $10.8 million of total compensation costs related to our unvested restricted stock units that have not been recognized as share-based compensation expense. Those compensation costs will be recognized as an expense over the remaining vesting periods. The weighted average remaining vesting period is approximately two years.
	The following table summarizes restricted stock activity for the year ended December 31, 2014:
		Number of		Weighted Average
		Shares		Measurement Date
		(000s)		Price
	Restricted stock outstanding at beginning of the period	217		$	15.84
	Vested	-211			15.75
	Forfeited	-6			18.56
	Restricted stock outstanding at end of period	-		$	-
	The following table summarizes information regarding restricted stock units outstanding as of December 31, 2014:
				Weighted
		Outstanding		Average
		Shares		Measurement
	Range of Measurement Date Prices	(000s)		Date Price
	$10.00 — $14.99	1,156			12.64
	$15.00 — $19.99	745			17.97
	Total restricted stock units outstanding	1,901		$	14.73
	The median measurement price of outstanding restricted stock units at December 31, 2014 was $15.97.
	The following table summarizes restricted stock unit activity for the year ended December 31, 2014:
		Number of		Weighted Average
		Shares		Measurement Date
		(000s)		Price
	Restricted stock units outstanding at beginning of the period	1,879		$	11.94
	Granted	777			17.90
	Vested	-707			10.83
	Forfeited	-48			14.46
	Restricted stock units outstanding at end of period	1,901		$	14.73
	During the year ended December 31, 2014, we granted 777,509 restricted stock units. At the time of grant, the awards had a fair value of $13.9 million. Of the restricted stock units granted, 79,277 shares vest based upon the achievement of certain performance criteria or market conditions. The fair value of these awards based on an assessment of performance achievement at the time of grant was estimated to be $1.5 million.
	Stock Options Outstanding
	At December 31, 2014, the intrinsic value of the stock options outstanding and stock options exercisable was $2.3 million and $2.0 million, respectively, based on a market price of $15.37 per share for our common stock at December 31, 2014.
	The following table summarizes stock option activity for the year ended December 31, 2014:
		Number of		Weighted Average
		Shares		Exercise
		(000's)		Price
	Options outstanding beginning of the period	780		$	12.37
	Granted	93			18.45
	Exercised	-29			12.27
	Forfeited	-26			17.93
Options outstanding at end of the period	818		$	12.89
Options exercisable at end of the period	595		$	11.95
The following table summarizes information regarding stock options outstanding at December 31, 2014:
Range of Measurement Date Prices	Outstanding		Average			Remaining
	Shares		Measurement			Exercise
	(000s)		Date Price			Period
$0.00 — $9.99	94		$	9.54		1.7
$10.00 — $14.99	631			12.57		1.8
$15.00 — $19.99	93			18.45		5.2
Total	818		$	12.89		2.2
The following table summarizes information regarding stock options exercisable at December 31, 2014:
	Outstanding		Weighted Average			Remaining
	Shares		Exercise			Exercise
Range of Exercise Prices	(000s)		Price			Period (years)
$0.00 — $9.99	94		$	9.54		1.7
$10.00 — $14.99	501			12.40		1.3
Total	595		$	11.95		1.4
The following table summarizes the information regarding stock options outstanding under each plan at December 31, 2014:
						Shares
						Remaining
				Weighted		Available
	Outstanding			Average		for Future
	Shares			Exercise		Issuances
Plan Category	(000s)			Price		(000s)
Long-Term Incentive Plan	818		$	12.89		3,024
Shares of our common stock issued in connection with either the vesting of restricted stock units, or the exercise of stock options, granted under the 2005 or 2012 Long-Term Incentive Plan are new issuances, and shares of our common stock issued in connection with the exercise of stock options granted under our Supplemental Equity Incentive Plan are issued from treasury.
Stock Option Grants
The fair value of each option grant is estimated at the grant date using the Black-Scholes-Merton option-pricing model. The weighted average fair value of options granted and the assumptions used in the Black-Scholes-Merton option-pricing model were as follows:
		2014		2013		2012
Fair value of options granted		$		$		$
		7.53		5.89		6.14
Expected volatility		45	%	55	%	56	%
Risk free interest rate		1.7	%	0.7	%	1.0	%
Forfeiture rate		0	%	0	%	0	%
Dividend yield		0	%	0	%	0	%
Expected lives (years)		5.0		4.5		4.5
We estimated a zero forfeiture rate for these stock option grants as the awards have short vesting terms and have a low probability of forfeiture based on the recipients of the stock options.
Employee Stock Purchase Plan
On May 3, 2006, our shareholders approved a new employee stock purchase plan that became effective on January 1, 2007. The employee stock purchase plan permits employees to purchase shares of our common stock each quarter at 90 percent of the market value. The market value of shares purchased for this purpose is determined to be the closing market price on the last day of each calendar quarter. The plan is considered compensatory and, as such, the purchase discount from market price purchased by employees is recorded as compensation expense. During each of the years ended December 31, 2014, 2013 and 2012, we recorded $0.3 million, $0.2 million, and $0.2 million of compensation expense, respectively, related to the discount given on employee stock purchases through our employee stock purchase plan.  During the years ended December 31, 2014, 2013 and 2012, we issued 166,425,  164,941 and 198,956 shares, respectively, of our common stock related to this plan.
The maximum number of shares of our common stock remaining at December 31, 2014 that can be issued under the employee stock purchase plan was 0.7 million shares, subject to certain adjustments. The employee stock purchase plan will expire on the date that all of the shares available under it are purchased by or issued to employees.
During the years ended December 31, 2014, 2013, and 2012, we received $2.8 million, $3.1 million, and $3.3 million, respectively, of cash from employee stock option exercises and employee stock purchases. Additionally, during the years ended December 31, 2014, 2013, and 2012, we generated tax benefits of $0.1 million, $0.1 million, and $0.2 million, respectively, related to employee stock option exercises.

Supplemental_Consolidated_Bala

Supplemental Consolidated Balance Sheet Information	12 Months Ended
	Dec. 31, 2014
Supplemental Consolidated Balance Sheet Information [Abstract]
Supplemental Consolidated Balance Sheet Information	10.SUPPLEMENTAL CONSOLIDATED BALANCE SHEET INFORMATION
	Accounts Receivable, net
	The components of accounts receivable were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Billed amounts	$	135,787		$	121,335
	Engagements in process, net		62,712			55,650
	Allowance for uncollectible accounts		-10,847			-9,919
	Accounts receivable, net	$	187,652		$	167,066
	Receivables attributable to engagements in process represent balances for services that have been performed and earned but have not been billed to the client. Services are generally billed on a monthly basis for the prior month’s services. Our allowance for uncollectible accounts is based on historical experience and management judgment and may change based on market conditions or specific client circumstances.  Allowances on engagements in process were $7.0 million at the year ended December 31, 2014 and 2013.  During the year ended December 31, 2014, we acquired $11.3 million in accounts receivable as part of the Cymetrix acquisition (see Note 3 – Acquisitions).
	Prepaid Expenses and Other Current Assets
	The components of prepaid expenses and other current assets were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Notes receivable - current	$	3,701		$	4,906
	Prepaid recruiting and retention incentives		8,633			8,001
	Other prepaid expenses and other current assets		14,808			11,647
	Prepaid expenses and other current assets	$	27,142		$	24,554
	Other Assets
	The components of other assets were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Notes receivable - non-current	$	3,401		$	7,155
	Capitalized client-facing software		2,163			5,586
	Prepaid recruiting and retention incentives - non-current		7,482			6,773
	Prepaid expenses and other non-current assets		4,340			3,322
	Other assets	$	17,386		$	22,836
	Notes receivable, current and non-current, represent unsecured employee loans. These loans were issued to recruit or retain certain senior-level consultants. The principal amount and accrued interest on these loans is either paid by the consultant or forgiven by us over the term of the loans so long as the consultant remains continuously employed by us and complies with certain contractual requirements. The expense associated with the forgiveness of the principal amount of the loans is amortized as compensation expense over the service period, which is consistent with the term of the loans.
	Capitalized client-facing software is used by our employees as part of client engagements. These amounts are amortized into cost of services before reimbursable expenses over their estimated remaining useful life.  During the years ended December 31, 2014 and 2013, we capitalized or acquired $2.4 million and $3.3 million, respectively, in capitalized client-facing software.  In addition, during the year ended December 31, 2014, we transferred $3.1 million of developed software into property and equipment, net due to a change in scope for its use.  During the year ended December 31, 2014, we recorded $1.3 million of impairment on client-facing software assets that are no longer being utilized by our client-service employees.
	Prepaid recruiting and retention incentives, current and non-current, include sign-on and retention bonuses that are generally recoverable from an employee if the employee terminates employment prior to fulfilling his or her obligations to us. These amounts are amortized as compensation expense over the period in which they are recoverable from the employee, generally in periods up to six years. During the year ended December 31, 2014 and 2013, we granted $12.5 million and $7.3 million, respectively, of sign-on and retention bonuses, which have been included in current and non-current prepaid recruiting and retention incentives.
	Property and Equipment, net
	Property and equipment, net consisted of (in thousands):
			December 31,			December 31,
			2014			2013
	Furniture, fixtures and equipment		$	65,077		$	62,486
	Software			65,410			43,867
	Leasehold improvements			33,807			32,416
	Property and equipment, at cost			164,294			138,769
	Less: accumulated depreciation and amortization			-103,677			-94,431
	Property and equipment, net		$	60,617		$	44,338
	During the year ended December 31, 2014, we invested $23.5 million in property and equipment which included $19.7 million in our technology infrastructure and software.  This amount included $2.5 million, net of additions, previously or currently accrued. In addition, we added $11.8 million as part of the Cymetrix acquisition (see Note 3 – Acquisitions) and transferred $3.1 million from client-facing software included in other assets due to a change in scope for the use of the developed product.  Additionally, we disposed of $10.1 million in fully depreciated assets.
	Other Current Liabilities
	The components of other current liabilities were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Deferred acquisition liabilities	$	26,202		$	5,773
	Deferred revenue		16,405			19,503
	Deferred rent - short term		3,006			997
	Other current liabilities		6,913			5,736
	Total other current liabilities	$	52,526		$	32,009
	The deferred acquisition liabilities at December 31, 2014 consisted of cash obligations related to definitive and contingent purchase price considerations recorded at net present value and fair value, respectively. During the year ended December 31, 2014, we made cash payments of $5.4 million in connection with deferred acquisition liabilities relating to prior period acquisitions.  Additionally, during the year ended December 31, 2014, we reduced the fair value of certain contingent acquisition liabilities by $0.8 million, and added $20.3 million relating to the Cymetrix acquisition (see Note 3 Acquisitions and Note 17 – Fair Value). During the year ended December 31, 2014, $2.6 million relating to accrued incentive compensation liabilities for the 2013 performance year was recorded as additional paid-in capital at the time of grant of certain restricted stock units in 2014.
	The current portion of deferred rent relates to rent allowances and incentives on lease arrangements for our office facilities that expire at various dates through 2025.
	Deferred revenue represents advance billings to our clients for services that have not yet been performed and earned.
	Other Non-Current Liabilities
	The components of other non-current liabilities were as follows (in thousands):
		December 31,			December 31,
		2014			2013
	Deferred acquisition liabilities	$	1,760		$	8,038
	Deferred rent - long term		9,015			10,642
	Other non-current liabilities		3,612			7,336
	Total other non-current liabilities	$	14,387		$	26,016
	The deferred acquisition liabilities at December 31, 2014 consisted of cash obligations related to definitive and contingent purchase price considerations recorded at net present value and fair value, respectively.  As obligations become payable within the year, these cash obligations are moved to other current liabilities.  During the year ended December 31, 2014, we reduced the fair value of certain non-current deferred contingent acquisition liabilities by $4.2 million and added $0.5 million relating to new acquisitions in deferred definitive acquisition liabilities (see Note 3 – Acquisitions and Note 17 – Fair Value).
	The long-term portion of deferred rent relates to rent allowances and incentives on lease arrangements for our office facilities that expire at various dates through 2025.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2014
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss
	11.ACCUMULATED OTHER COMPREHENSIVE LOSS
	The following table summarizes the activity in accumulated other comprehensive loss (in thousands):
		For the year ended
		December 31,
		2014		2013		2012
	Unrealized gain (loss) on foreign exchange:
	Balance at beginning of period	$	-9,129	$	-8,418	$	-12,506
	Unrealized gain (loss) on foreign exchange		-2,844		-711		4,088
	Balance at end of period	$	-11,973	$	-9,129	$	-8,418
	Unrealized gain (loss) on derivatives:
	Balance at beginning of period	$	-212	$	-306	$	-275
	Unrealized loss on derivatives, net of reclassification		-127		-39		-339
	Reclassified to interest expense		380		222		514
	Income tax expense		-152		-89		-206
	Balance at end of period	$	-111	$	-212	$	-306
		2014		2013		2012
	Accumulated other comprehensive loss at December 31,	$	-12,084	$	-9,341	$	-8,724

Derivatives_And_Hedging_Activi

Derivatives And Hedging Activity	12 Months Ended
	Dec. 31, 2014
Derivatives And Hedging Activity [Abstract]
Derivatives And Hedging Activity	12.DERIVATIVES AND HEDGING ACTIVITY
	During the year ended December 31, 2014, the following interest rate derivatives were outstanding (summarized based on month of execution):
		Number of				Total Notional Amount
	Month executed	Contracts	Beginning Date	Maturity Date	Rate	(millions)
	Nov-11	1	31-May-12	31-May-15	0.98%	$10.00
	Dec-11	2	31-Dec-12	31-Dec-15	1.17%	$10.00
	Mar-12	1	29-Jun-12	30-Jun-15	1.01%	$5.00
	May-12	1	28-Jun-13	27-May-16	1.15%	$5.00
	Jul-14	5	11-Jul-14	11-Jul-17	1.10%	$30.00
	We expect the interest rate derivatives to be highly effective against changes in cash flows related to changes in interest rates and have recorded the derivatives as a cash flow hedge. As a result, gains or losses related to fluctuations in the fair value of the interest rate derivatives are recorded as a component of accumulated other comprehensive loss and reclassified into interest expense as the variable interest expense on our bank debt is recorded. There was no ineffectiveness related to the interest rate derivatives during the year ended December 31, 2014. For the years ended December 31, 2014 and 2013, we recorded $0.4 million and $0.2 million, respectively, in interest expense associated with differentials received or paid under the interest rate derivatives.
	At December 31, 2014 and December 31, 2013, we had $0.2 million and $0.4 million, respectively, of net liability related to the interest rate derivatives.

Bank_Debt

Bank Debt	12 Months Ended
	Dec. 31, 2014
Bank Debt [Abstract]
Bank Debt	13.BANK DEBT
	Our credit agreement provides a $400.0 million revolving credit facility.  At our option, subject to the terms and conditions specified in the credit agreement, we may elect to increase commitments under the credit facility up to an aggregate amount of $500.0 million.  The credit facility becomes due and payable in full upon maturity in September 2018. Borrowings and repayments under the credit facility may be made in multiple currencies including U.S. Dollars, Canadian Dollars, United Kingdom Pound Sterling and Euro.
	At December 31, 2014, we had aggregate borrowings outstanding of $109.8 million, compared to $56.7 million at December 31, 2013. Based on our financial covenants at December 31, 2014, approximately $275 million in additional borrowings were available to us under the credit facility.  At December 31, 2014 we had $8.1 million of unused letters of credit under our credit facility, which have been included as a reduction in the available borrowings above.  The letters of credit are primarily related to the requirements of certain lease agreements for office space.
	At our option, borrowings under the credit facility bear interest at a variable rate equal to an applicable base rate or LIBOR, in each case plus an applicable margin. For LIBOR loans, the applicable margin varies depending upon our consolidated leverage ratio (the ratio of total funded debt to adjusted EBITDA, as defined in the credit agreement). At December 31, 2014, the applicable margins on LIBOR and base rate loans were 1.00% and 0.00%, respectively. Depending upon our performance and financial condition, our LIBOR loans will have applicable margins varying between 1.00% and 2.00%, and our base rate loans have applicable margins varying between zero and 1.00%. Our average borrowing rate (including the impact of our interest rate derivatives; see Note 12 — Derivatives and Hedging Activity) was 2.3% and 2.5% for the year ended December 31, 2014 and 2013, respectively.
	Our credit agreement contains certain financial covenants, including covenants that require that we maintain a consolidated leverage ratio of not greater than 3.25:1 (except for the first quarter of each calendar year when the covenant requires us to maintain a consolidated leverage ratio of not greater than 3.5:1) and a consolidated interest coverage ratio (the ratio of the sum of adjusted EBITDA (as defined in the credit agreement) and rental expense to the sum of cash interest expense and rental expense) of not less than 2.0:1. At December 31, 2014, under the definitions in the credit agreement, our consolidated leverage ratio was 1.0 and our consolidated interest coverage ratio was 4.9. In addition, the credit agreement contains customary affirmative and negative covenants (subject to customary exceptions), including covenants that limit our ability to incur liens or other encumbrances, make investments, incur indebtedness, enter into mergers, consolidations and asset sales, change the nature of our business and engage in transactions with affiliates, as well as customary provisions with respect to events of default. We were in compliance with the terms of our credit agreement at December 31, 2014; however, there can be no assurances that we will remain in compliance in the future.

Other_Operating_Costs_Benefit

Other Operating Costs (Benefit)	12 Months Ended
	Dec. 31, 2014
Other Operating Costs (Benefit) [Abstract]
Other Operating Costs (Benefits)	14.OTHER OPERATING COSTS (BENEFIT)
	Other operating costs (benefit) for the years ended December 31, 2014, 2013, and 2012 consisted of the following (shown in thousands):
		2014		2013		2012
	Office consolidation, net:
	Adjustments to office closure obligations, discounted and net of expected sublease income	$	-	$	-150	$	580
	Rent expense during office consolidation		725		-		-
	Accelerated depreciation		-		498		-
	Contingent acquisition liability adjustments, net		-4,992		-5,399		1,065
	Gain on disposition of assets		-541		-1,715		-
	Goodwill impairment		122,045		-		-
	Other impairment		1,343		-		-
	Other operating costs (benefit)	$	118,580	$	-6,766	$	1,645
	Office Consolidation, Net
	During the year ended December 31, 2014, we recorded a cost of $0.7 million related to rent expense for our new office space located in New York, New York which we took possession of on October 22, 2014.  For a period of time we will have duplicate rent as we continue to occupy our existing New York offices which are to be consolidated into the new space upon completion of the build-out.
	During the year ended December 31, 2013, we consolidated two office spaces and recorded an additional $0.5 million of depreciation expense as a result of accelerating the useful life for the leasehold improvements related to those offices.  We have no additional obligations for these office consolidations.  In addition, we subleased our New York office space, acquired from our AFE acquisition, ahead of our estimated sublease date which resulted in a benefit of $0.2 million.
	During the year ended December 31, 2012, we recorded a $0.6 million liability related to a New York office lease acquired with our AFE acquisition which was abandoned as acquired employees assumed space at our existing New York office.
	Balance Sheet — At December 31, 2014, we have recorded $0.2 million in current and non-current liabilities for restructured real estate. The activity for the years ended December 31, 2014 and 2013 is as follows (shown in thousands):
		Office Space Reductions
	Balance at December 31, 2012	$	1,235
	Benefit to operations during the year ended December 31, 2013		-150
	Utilized during the year ended December 31, 2013		-685
	Balance at December 31, 2013	$	400
	Utilized during the year ended December 31, 2014		-158
	Balance at December 31, 2014	$	242
	We monitor our estimates for office closure obligations and related expected sublease income periodically. Additionally, we continue to consider all options with respect to the abandoned offices, including settlements with the property owners and the timing of termination clauses under the lease. Such estimates are subject to market conditions and may be adjusted in future periods as necessary. Of the $0.2 million liability recorded at December 31, 2014, we expect to pay $0.2 million in cash relating to these obligations during the next twelve months. The office closure obligations have been discounted to net present value.
	Gain on Disposition of Assets
	During the year ended December 31, 2014, we recorded a $0.5 million gain relating to the October 1, 2014 sale of certain software within our Healthcare segment (see Note 4 – Dispositions and Discontinued Operations).
	During the year ended December 31, 2013, we recorded a $1.7 million gain relating to the January 31, 2013 sale of a portion of the economics business within our Disputes, Investigations & Economics segment (see Note 4 – Dispositions and Discontinued Operations).
	Contingent Acquisition Liability Adjustment, Net
	During the year ended December 31, 2014 and 2013, we recorded benefits of $5.0 million and $5.4 million, respectively, and in 2012, we recorded a $1.1 million expense relating to net adjustments to our contingent acquisition liabilities.
	Contingent acquisition liabilities are initially estimated based on expected performance at the acquisition date and subsequently reviewed each quarter (see Note 17 – Fair Value).
	Goodwill Impairment
	During the year ended December 31, 2014, we recorded a pre-tax goodwill impairment of $122.0 million (see Note 6 – Goodwill and Intangible Assets, Net).
	Other Impairment
	During the year ended December 31, 2014, we recorded $1.3 million of impairment on software assets that are no longer being utilized by our client-service employees.

Lease_Commitments

Lease Commitments	12 Months Ended
	Dec. 31, 2014
Lease Commitments [Abstract]
Lease Commitments	15.LEASE COMMITMENTS
	We lease office facilities under operating lease arrangements that expire at various dates through 2025. We lease office facilities under non-cancelable operating leases that include fixed or minimum payments plus, in some cases, scheduled base rent increases over the terms of the leases and additional rents based on the Consumer Price Index. Certain leases provide for monthly payments of real estate taxes, insurance and other operating expenses applicable to the property. Some of our leases contain renewal provisions.
	Future minimum annual lease payments for the years subsequent to December 31, 2014 and in the aggregate are as follows (shown in thousands):
	Year ending December 31,	Amount
	2015	$	23,064
	2016		21,364
	2017		18,055
	2018		14,860
	2019		13,119
	Thereafter		37,658
		$	128,120
	Rent expense for operating leases was $26.3 million, $27.6 million and $28.7 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes
Income Taxes	16.INCOME TAXES
	The sources of income (loss) before income taxes are as follows (shown in thousands):
				For the year ended
				December 31,
				2014			2013			2012
		United States		$	-2,747		$	109,089		$	84,220
		Foreign			-35,511			-10,087			-7,470
		Total income (loss) from continuing operations before income tax (benefit) expense		$	-38,258		$	99,002		$	76,750
	Income tax expense (benefit) consists of the following (shown in thousands):
			For the year ended
			December 31,
			2014			2013			2012
	Federal:
	Current		$	13,590		$	21,458		$	18,667
	Deferred			-13,401			14,703			9,136
	Total			189			36,161			27,803
	State:
	Current			2,949			4,440			4,349
	Deferred			-3,419			3,752			2,331
	Total			-470			8,192			6,680
	Foreign:
	Current			162			-429			-1,621
	Deferred			-1,232			-34			-344
	Total			-1,070			-463			-1,965
	Total federal, state and foreign income tax (benefit) expense from continuing operations		$	-1,351		$	43,890		$	32,518
	Income tax expense differs from the amounts estimated by applying the statutory income tax rates to income before income taxes as follows:
			For the year ended
			December 31,
			2014			2013			2012
		Federal tax (benefit) expense at the statutory rate	-35	%		35.0	%		35.0	%
		State tax expense at the statutory rate, net of federal tax benefits	-			6.0			6.0
		Foreign taxes	0.1			1.1			0.9
		Effect of goodwill impairment	30.7			-			-
		Effect of enacted tax rate changes	0.5			-			-
		Effect of valuation allowances	-1.6			2.1			-
		Effect of non-deductible meals and entertainment expense	1.6			0.6			0.8
		Effect of other transactions, net	0.2			-0.5			-0.3
			-3.5	%		44.3	%		42.4	%
	Deferred income taxes result from temporary differences between years in the recognition of certain expense items for income tax and financial reporting purposes. The source and income tax effects of these differences (shown in thousands) are as follows:
			For the year ended
			December 31,
			2014			2013
		Deferred tax assets (liabilities) attributable to:
		Allowance for uncollectible receivables	$	4,115		$	4,055
		Deferred revenue		5,735			4,942
		Accrued compensation		2,306			4,329
		Accrued office consolidation costs		81			105
		Interest rate derivatives		60			143
		Share-based compensation		8,384			7,697
		Forgivable loans		1,848			2,349
		Foreign net operating losses		1,648			2,688
		Other		1,304			271
		Subtotal		25,481			26,579
		Foreign valuation allowance		-2,415			-3,222
		Deferred tax assets		23,066			23,357
		Goodwill and intangibles — domestic acquisitions		-73,638			-83,227
		Goodwill and intangibles — foreign acquisitions		-290			-1,627
		Depreciation and amortization		-9,316			-5,922
		Prepaid expenses		-2,696			-1,838
		Deferred tax liabilities		-85,940			-92,614
		Net deferred tax liabilities	$	-62,874		$	-69,257
	When appropriate, we evaluate the need for a valuation allowance to reduce deferred tax assets. The evaluation of the need for a valuation allowance requires management judgment and could impact our financial results and effective tax rate. Management has determined that it is more likely than not, due to the uncertainty surrounding our international business operations, that sufficient future taxable income will not be available to realize certain deferred tax assets, therefore management recognized a full valuation allowance for those deferred tax assets in the financial statements.
	We do not provide for U.S. federal income and foreign withholding taxes on the portion of undistributed earnings of foreign subsidiaries that are intended to be permanently reinvested. The cumulative amount of such undistributed earnings totaled approximately $6.7 million at December 31, 2014. These earnings would become taxable in the United States upon the sale or liquidation of these foreign subsidiaries or upon the remittance of dividends. It is not practicable to estimate the amount of the deferred tax liability on such earnings.
	Unrecognized Tax Benefits
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
	Amount
	(in thousands)
Balance at January 1, 2014	$	329
Additions based on tax positions of prior years		73
Reductions based on tax positions of prior years		-173
Settlements		-5
Balance at December 31, 2014	$	224
At December 31, 2014, our accrual for tax positions for which the ultimate deductibility is uncertain was not material. We believe that only a specific resolution of the matters with the taxing authorities or the expiration of the statute of limitations would provide sufficient evidence for management to conclude that the deductibility is more likely than not sustainable.
We are subject to U.S. federal income tax as well as income tax of multiple state and foreign jurisdictions. We have substantially concluded all U.S. federal income tax matters for years through 2010. Substantially all material state and local and foreign income tax matters have been concluded for years through 2010.  We are currently under audit with the Internal Revenue Service for the year 2012.

Fair_Value

Fair Value	12 Months Ended
	Dec. 31, 2014
Fair Value [Abstract]
Fair Value	17.FAIR VALUE
	Fair value is defined as the price that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The inputs used to measure fair value are classified into the following hierarchy:
	Level 1:  Unadjusted quoted prices in active markets for identical assets or liabilities
	Level 2:  Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability
	Level 3:  Unobservable inputs for the asset or liability
	We endeavor to utilize the best available information in measuring fair value.  Financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.
	Our interest rate derivatives (see Note 12 — Derivatives and Hedging Activity) are valued using counterparty quotations in over-the-counter markets. In addition, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk. The credit valuation adjustments associated with our interest rate derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default by ourselves and our counterparties. However, at December 31, 2014, we assessed the significance of the impact on the overall valuation and believe that these adjustments are not significant. As such, our interest rate derivatives are classified within Level 2.
	In certain instances our acquisitions provide for deferred contingent acquisition payments.  These deferred payments are recorded at fair value at the time of acquisition and are included in other current and/or non-current liabilities on our consolidated balance sheets. We estimate the fair value of our deferred contingent acquisition liabilities using a probability-weighted discounted cash flow model. This fair value measure is based on significant inputs not observed in the market and thus represents a Level 3 measurement. Fair value measurements characterized within Level 3 of the fair value hierarchy are measured based on unobservable inputs that are supported by little or no market activity and reflect our own assumptions in measuring fair value.
	The significant unobservable inputs used in the fair value measurements of our deferred contingent acquisition liabilities are our measures of the future profitability and related cash flows and discount rates. The fair value of the deferred contingent acquisition liabilities is reassessed on a quarterly basis based on assumptions provided to us by segment and business area leaders in conjunction with our business development and finance departments. Any change in the fair value estimate is recorded in the earnings of that period. During the year ended December 31, 2014 and 2013, we recorded $5.0 million and $5.4 million, respectively, in other operating benefit for a reduction in the liability reflecting changes in the fair value estimate of the contingent consideration for certain acquisitions made in 2013 and 2012 (see Note 3 – Acquisitions).  The following table summarizes the changes in deferred contingent consideration liabilities (in thousands):
		For the year ended
		December 31,
		2014		2013
	Beginning Balance	$	6,322	$	13,384
	Acquisitions		20,285		1,046
	Accretion of acquisition-related contingent consideration		2,121		578
	Remeasurement of acquisition-related contingent consideration		-4,992		-5,399
	Payments		-464		-3,287
	Ending Balance	$	23,272	$	6,322
	At December 31, 2014, the carrying value of our bank debt approximated fair value as it bears interest at variable rates. We consider the recorded value of our other financial assets and liabilities, which consist primarily of cash and cash equivalents, accounts receivable and accounts payable, to approximate the fair value of the respective assets and liabilities at December 31, 2014 based upon the short-term nature of the assets and liabilities.
	The following table summarizes our financial assets and liabilities measured at fair value on a recurring basis at December 31, 2014 and December 31, 2013  (in thousands):
			Quoted Prices in
			Active  Markets for	Significant Other		Significant
			Identical Assets	Observable  Inputs		Unobservable  Inputs
			(Level 1)	(Level 2)		(Level 3)			Total
	At December 31, 2014
	Interest rate derivatives, net	$	—	$	184	$	—	$	184
	Deferred contingent acquisition liabilities	$	—	$	—	$	23,272	$	23,272
	At December 31, 2013
	Interest rate derivatives, net	$	—	$	355	$	—	$	355
	Deferred contingent acquisition liabilities	$	—	$	—	$	6,322	$	6,322

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Employee Benefit Plans
Employee Benefit Plans	18.EMPLOYEE BENEFIT PLANS
	We sponsor a 401(k) savings plan for eligible U.S. employees and currently match an amount equal to 100 percent of the employee’s current contributions, up to a maximum of 3 percent of the employee’s total eligible annual compensation.  Beginning January 1, 2015, the eligible annual compensation limit used to compute the company matching contribution will increase from $260,000 to the IRS annual maximum, which is $265,000 for 2015.  As a result, employees participating in the plan in 2015 may receive up to $7,950 in matching contributions for 2015. We, as sponsor of the plan, use independent third parties to provide administrative services to the plan. We have the right to terminate the plan at any time. Our matching contributions were $7.6 million, $6.5 million, and $6.0 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	We sponsor other retirement plans for our foreign subsidiaries’ employees. During the years ended December 31, 2014, 2013 and 2012, we recorded expense of $2.2 million, $2.0 million and $2.2 million, respectively, for defined contribution retirement savings-related plans.

Litigation_And_Settlements

Litigation And Settlements	12 Months Ended
	Dec. 31, 2014
Litigation And Settlements Disclosure [Abstract]
Litigation And Settlements	19.LITIGATION AND SETTLEMENTS
	We are not party to any material legal proceedings.

Valuation_And_Qualifying_Accou

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation And Qualifying Accounts
Valuation And Qualifying Accounts	SCHEDULE II
	NAVIGANT CONSULTING, INC. AND SUBSIDIARIES
	VALUATION AND QUALIFYING ACCOUNTS
	Years ended December 31, 2014, 2013 and 2012
		Balance at						Balance at
		Beginning of		Charged to				End of
	Description	Year		Expenses (1)		Deductions (2)		Year
			(In thousands)
	Year ended December 31, 2014
	Allowance for doubtful accounts	$	9,919	$	5,009	$	-4,081	$	10,847
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	15,375	$	-686	$	-4,770	$	9,919
	Year ended December 31, 2012
	Allowance for doubtful accounts	$	14,973	$	6,329	$	-5,927	$	15,375
	(1) Includes discontinued operations and portions relating to sold businesses during the year.
	(2) Represents write-offs.
	See accompanying report of independent registered public accounting firm.

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Principles Of Consolidation	Principles of Consolidation
	The consolidated financial statements include our accounts and those of our subsidiaries. All significant intercompany transactions have been eliminated in consolidation.
Use Of Estimates	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 amounts reported in the consolidated financial statements and the related notes. Actual results could differ from those estimates and may affect future results of operations and cash flows. Examples include: determination of the allowance for doubtful accounts, accruals for incentive compensation, the fair value of acquisition-related contingent consideration, revenue-related percentage of completion estimates, the measurement of deferred tax assets, estimating future performance for recording expense associated with our performance based long-term incentive plan, and the assessment of recoverability of intangible assets and goodwill. We base our estimates on historical trends, current experience and other assumptions that we believe are reasonable.
Cash And Cash Equivelants	Cash and Cash Equivalents
	Cash equivalents are comprised of liquid instruments with original maturity dates of 90 days or less.
Fair Value Of Financial Instruments	Fair Value of Financial Instruments
	We consider the recorded value of our financial assets and liabilities, which consist primarily of cash and cash equivalents, accounts receivable and accounts payable, to approximate the fair value of the respective assets and liabilities at December 31, 2014 and 2013 based upon the short-term nature of the assets and liabilities. In addition, the fair value of our bank debt considers counterparty credit risk and as of December 31, 2014, approximated carrying value as it bears interest at variable rates. As noted below, we maintain interest rate derivatives which are recorded at fair value (see Note 17 — Fair Value).
Accounts Receivable Realization	Accounts Receivable Realization
	We maintain allowances for doubtful accounts for estimated losses resulting from our clients’ inability to make required cash payments of amounts due to us or for disputes that affect our ability to fully collect our billed accounts receivable or for potential fee reductions negotiated by clients. Our estimation is based on historical collection and our review and assessment of our clients’ likelihood to make required cash payments of amounts due to us.  Estimated losses may vary from actual results.  If our clients’ financial condition were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required.  If the collectability of billed amounts is not assured, an allowance is recorded to general and administrative expense. If the collectability of unbilled amounts is not assured or certain pricing adjustments are made, an allowance is recorded as a reduction to revenue.
Property And Equipment, Net	Property and Equipment, Net
	We record property and equipment at cost. We compute depreciation using the straight-line method based on the estimated useful lives of the assets, ranging from three to seven years for software, furniture, fixtures and equipment. We compute amortization of leasehold improvements over the shorter of the remaining lease term or the estimated useful life of the asset. The lease term of our leaseholds expire at various dates through 2025. During the years ended December 31, 2014, 2013 and 2012, we capitalized compensation costs related to internally developed software for internal use of $1.6 million, $0.9 million and $0.9 million, respectively. We capitalize internally developed software costs during the development stage.
Client-Facing Software	Client-Facing Software
	Prepaid expenses and other assets also include investments in capitalized client-facing software which is utilized to deliver services to or licensed to our clients.  These amounts are amortized into cost of services before reimbursable expenses over their estimated remaining useful life.
Operating Leases	Operating Leases
	We lease office space under operating leases. Some of the lease agreements contain one or more of the following provisions or clauses: tenant allowances, rent holidays, lease premiums, and rent escalation clauses. For the purpose of recognizing these provisions on a straight-line basis over the terms of the leases, we use the date of initial possession to begin amortization, which is generally when we enter the space and begin to make improvements in preparation of intended use.
	For tenant allowances and rent holidays, we record a deferred rent liability and amortize the deferred rent over the terms of the leases as reductions to rent expense. For scheduled rent escalation clauses during the lease term or for rental payments commencing at a date other than the date of initial occupancy, we record minimum rental expenses on a straight-line basis over the terms of the leases.
	In addition, some of our operating leases contain exit clauses, which include termination fees associated with exiting a lease prior to the expiration of the lease term. We record termination obligations when we give notice to the landlord that we have elected to exercise the early termination clause of such agreement.
Notes Receivable And Prepaid Sign-on And Retention Bonuses	Notes Receivable, Prepaid Sign-on and Retention Bonuses
	We grant and pay sign-on and retention bonuses to attract and retain certain senior-level consultants and administrative personnel. Generally, we require grantees to sign incentive recovery agreements, which obligate the grantees to fulfill a service term, typically between one to five years. If such service term is not fulfilled, the monetary equivalent of the uncompleted service term is required to be paid back to us. We record paid sign-on and retention bonuses to current and non-current other assets and the bonuses are amortized as compensation expense over the service period as defined by the incentive recovery agreements. Certain sign-on and retention bonuses of relatively low amounts are expensed to compensation expense when paid.
	We also issue notes receivable in the form of unsecured employee loans with terms that are generally three to five years. These loans are issued to recruit and retain certain senior-level consultants. The principal amount and accrued interest is either paid by the consultant or forgiven by us over the terms of the loans, so long as the consultant continues employment and complies with certain contractual requirements. The expense associated with the forgiveness of the principal amount of the loans and accrued interest is recorded as compensation expense over the service period, which is consistent with the term of the loans. The accrued interest is calculated based on the loan’s effective interest rate and is recorded as interest income.
Goodwill And Intangible Assets	Goodwill and Intangible Assets
	Goodwill represents the difference between the purchase price of the acquired business and the related fair value of the net assets acquired, which is accounted for by the acquisition method of accounting. Intangible assets consist of identifiable intangibles other than goodwill. Identifiable intangible assets, other than goodwill, include customer lists and relationships, employee non-compete agreements, backlog revenue and trade names. These assets are subject to changes in events or circumstances that could impact their carrying value.
	Goodwill is tested for impairment annually during the second quarter. In addition to our annual goodwill test, on a periodic basis, we are required to consider whether it is more likely than not that the fair value has fallen below the carrying amount of an asset and thus requiring us to perform an interim goodwill impairment test. We consider elements and other factors including, but not limited to:
	•adverse changes in the business climate in which we operate;
	•attrition of key personnel;
	•unanticipated competition;
	•our market capitalization in excess of our book value;
	•our recent operating performance; and/or
	•our financial projections.
	The goodwill impairment test is performed at a reporting unit level. A reporting unit, as defined by Accounting Standard Codification (ASC) 350, is an operating segment of a business or one level below an operating segment if discrete financial information is available and regularly reviewed by segment management. At December 31, 2014, we had four operating segments which were also considered to be our reporting units, as follows: Disputes, Investigations & Economics, Financial, Risk & Compliance, Healthcare and Energy.
	Financial Accounting Standards Board Accounting Standards Update (ASU) No. 2011-08, “Intangibles — Goodwill and Other (Topic 350): Testing Goodwill for Impairment” (“ASU Topic 350”)  permits an entity to make a qualitative assessment of whether it is more likely than not that a reporting unit’s fair value is less than its carrying amount before applying a two-step goodwill impairment test. This step is referred to as “step zero.” If an entity concludes that it is not likely that the fair value of the reporting unit is less than its carrying amount, it would not be required to perform a two-step impairment test for that reporting unit. The guidance lists certain factors to consider when making the qualitative assessment. In the event that the conclusion requires the two-step test, the first step compares the fair value of a reporting unit to its carrying value. The fair value is determined using a discounted cash flow analysis (income approach) and a comparable company analysis (market approach). The second step is performed only if the carrying value exceeds the fair value determined in step one.
	We determine the fair value of a reporting unit by using an equal weighting of estimated fair value using the income and market approaches. The income approach uses estimated future cash flows and terminal values. Assumptions used to determine future cash flows include: forecasted growth rates; profit margins; longer-term historical performance and cost of capital. Our assumptions are consistent with our internal projections and operating plans. Our internal projections and operating plans and thus our estimated fair value may be impacted by the overall economic environment. Our assumptions may change as a result of, among other things: changes in our estimated business future growth rate; profit margin; long-term outlook; market valuations of comparable companies; the ability to retain key personnel; changes in operating segments; competitive environment and weighted average cost of capital. Under the market approach for determining fair value, we adopt certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk or the risks inherent in the inputs to the valuation. Inputs to the valuation can be readily observable, market-corroborated or unobservable. Wherever possible, we use valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs; however, due to the use of our own assumptions about the inputs in measuring fair value, our goodwill impairment testing also makes use of significant unobservable inputs. The fair value of our reporting units is also impacted by our overall market capitalization and may be impacted by volatility in our stock price and assumed control premium, among other things.
	If the carrying value exceeds the fair value determined in step one, step two is performed. Step two requires us to calculate the implied fair value of a reporting unit’s goodwill. This is accomplished by performing a hypothetical purchase price allocation for the reporting unit as of the measurement date, similar to the purchase price allocation used when purchasing a new business. We estimate the fair value of the reporting unit’s assets and liabilities and deem the residual fair value of the reporting unit as the implied fair value of the reporting unit’s goodwill. To the extent that the implied fair value of goodwill is below our carrying value, an impairment charge is recorded to reduce the carrying value to the implied fair value. The resulting impairment charge may be significantly higher than the difference between the carrying value and fair value determined in step one as a result of fair value assigned to other assets and liabilities in the hypothetical purchase price allocation completed in step two.
	Intangible assets with definite lives are amortized based on the estimated period of consumption. We review these assets for impairment whenever events or changes in circumstances indicate an asset’s carrying value may not be recoverable.
	Further information regarding our goodwill balances and current year impairment testing and review can be found in Note 6 — Goodwill and Intangible Assets, Net.
Revenue Recognition	Revenue Recognition
	We recognize revenues when evidence of an arrangement exists, the price of work is fixed or determinable, work is performed and collectability is reasonably assured. We generate the majority of our revenues from providing services under the following types of arrangements: time and material (including units of production), fixed-fee and milestone based.
	For our time and material arrangements, revenue is recognized based on the number of hours worked by our client-service employees at the contracted bill rates or on units of service delivered, which are reviewed on a periodic basis. Additionally, revenue is recognized on our units of production arrangements in a similar manner based on measures such as the number of items processed at agreed-upon rates.
	With our fixed-fee arrangements, we are contracted to complete a pre-determined set of professional services for a pre-determined fee. However, the fee and engagement scope can be adjusted based on a mutual agreement between us and the client. In many cases, the recording of fixed revenue amounts requires us to make an estimate of the total amount of work to be performed, and revenues are then recognized as efforts are expended based on (i) objectively determinable output measures, (ii) input measures if output measures are not reliable or (iii) the straight-line method over the term of the arrangement.
	In milestone-based arrangements, fees are tied to the completion of contractually defined outcomes. In many cases, this fee is earned in addition to an hourly or fixed fee, but is not recognized until certain contractual milestones or outcomes are met. Variations in our quarterly or yearly revenues and resulting operating profit margins may occur depending on the timing of such contractual outcomes and our ability to consider these revenues earned and realized.
	In connection with recording revenues, estimates and assumptions are required in determining the expected conversion of the revenues to cash. We may provide multiple services under the terms of an arrangement and are required to assess whether one or more units of accounting are present.
	Reimbursable expenses for our engagements include travel, out-of-pocket and independent contractor costs. Such expenses are included in our revenues as applicable and are passed through to other cost of services. Typically, reimbursable expenses are recognized as revenue during the period in which the expense is incurred.
	Revenues recognized for services performed but not yet billed are recorded as unbilled receivables on our consolidated balance sheet. Advance payments and retainers are recorded as deferred revenue and are recognized as services are provided. Any taxes assessed on revenues relating to services provided to our clients are recorded on a net basis.
Legal	Legal
	We record legal expenses as incurred. Potential exposures related to unfavorable outcomes of legal matters are accrued for when they become probable and reasonably estimable.
Share-Based Compensation	Share-Based Compensation
	We recognize the cost resulting from all share-based compensation arrangements, including stock options, restricted stock awards and restricted stock units that we grant under our long-term incentive plans in our consolidated financial statements based on their grant date fair value. The expense is recognized over the requisite service period or performance period of the award. Awards with a graded vesting period based on service are expensed on a straight-line basis for the entire award. Awards with performance-based vesting requiring the achievement of a specific financial performance goal at the end of the performance period and required service period are recognized over the performance period.  Each reporting period, we reassess the probability of achieving the respective performance goal. If the goals are not expected to be met, no compensation cost is recognized and any previously recognized amount recorded is reversed. If the award contains market-based vesting conditions, the compensation cost is based on the grant date fair value and expected achievement of market condition and is not subsequently reversed if it is later determined that the condition is not likely to be met or are expected to be lower than initial expectations.
	Stock options grant date fair value is based on the Black-Scholes-Merton pricing model. The Black-Scholes-Merton option-pricing model requires judgmental assumptions including volatility and expected term, both based on historical experience. The risk-free interest rate is based on U.S. Treasury interest rates whose term is consistent with the expected term of the option.
	Restricted stock and restricted stock unit fair value is based on the closing price of the underlying stock on the date of the grant.
	At the time of the grant, we make an estimation of expected forfeitures based upon past experience. Compensation expense is recorded only for those awards expected to vest. Our forfeiture rate is reviewed periodically and may change from year to year.
Income Taxes	Income Taxes
	We account for income taxes in accordance with FASB ASC Topic 740, “Income Taxes”. Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits reflect management’s best assessment of estimated tax obligations. We are subject to income taxes in the United States and a number of foreign jurisdictions. Significant judgments and estimates are required in determining the consolidated income tax expense.
	Deferred income taxes arise from temporary differences between the tax and financial statement recognition of revenue and expense. In evaluating our ability to recover our deferred tax assets within the jurisdiction from which they arise, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax-planning strategies, and results of recent operations. When appropriate, we evaluate the need for a valuation allowance to reduce deferred tax assets. The evaluation of the need for a valuation allowance requires management judgment and could impact our financial results and effective tax rate. We record interest and penalties as a component of our income tax provision. Such amounts were not material during any of the years ended December 31, 2014, 2013 or 2012.
Treasury Stock	Treasury Stock
	We account for treasury stock transactions at cost and for the reissuance of treasury stock using the average cost method.
Foreign Currency	Foreign Currency
	The balance sheets of our foreign subsidiaries are translated into United States dollars using the period-end exchange rates, and revenues and expenses are translated using the average exchange rates for each period. The resulting translation gains or losses are recorded in stockholders’ equity as a component of accumulated other comprehensive loss. Gains and losses resulting from foreign exchange transactions are recorded in the consolidated statements of comprehensive income (loss). Such amounts were $0.2 million gain for the year ended December 31, 2014, and $0.4 million and $0.1 million losses for 2013 and 2012, respectively.
Interest Rate Derivatives	Interest Rate Derivatives
	We maintain interest rate swaps that are designated as cash flow hedges to manage the market risk from changes in interest rates on a portion of our variable rate loans. We recognize derivative instruments which are cash flow hedges as assets or liabilities at fair value, with the related gain or loss reflected within stockholders’ equity as a component of accumulated other comprehensive income (loss). Such instruments are recorded at fair value at each reporting date on a recurring basis. Changes in fair value as calculated are recorded in other comprehensive income (loss) (see Note 12 — Derivatives and Hedging Activity) only to the extent of effectiveness. Any ineffectiveness on the instruments would be recognized in the consolidated statements of comprehensive income (loss). The differentials to be received or paid under the instruments are recognized in earnings over the life of the contract as adjustments to interest expense. During the years ended December 31, 2014, 2013 and 2012, we recorded no gain or loss due to ineffectiveness and recorded $0.4 million, $0.2 million and $0.5 million, respectively, in interest expense associated with differentials paid under the instrument. Based on the net fair value of our interest rate swaps at December 31, 2014, we expect no material expense related to these instruments in the year ending December 31, 2015.
Accounting For Business Acquisition	Accounting for Business Combinations
	We use the acquisition method of accounting under the authoritative guidance on business combinations. Each acquired company’s operating results are included in our consolidated financial statements starting on the date of acquisition. The purchase price is equivalent to the fair value of consideration transferred. Tangible and identifiable intangible assets acquired and liabilities assumed as of the date of acquisition are recorded at fair value as of the acquisition date. Goodwill is recognized for the excess of purchase price over the net fair value of assets acquired and liabilities assumed. Contingent consideration, which is primarily based on the business achieving certain performance targets, is recognized at its fair value on the acquisition date, and changes in fair value are recognized in earnings until settled. For the years ended December 31, 2014, 2013 and 2012, we recorded $5.0 million and $5.4 million of operating benefit, and $1.1 million of operating costs, respectively, for these fair value adjustments.  The fair value of the contingent consideration is based on our estimations of future performance of the business and is determined based on Level 3 observable inputs. Further information regarding our contingent acquisition liability balances can be found in Note 17 — Fair Value.
Impairment Of Long-Lived Assets	Impairment of Long-Lived Assets
	We review long-lived assets such as property and equipment and definite-lived intangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. These events or changes in circumstances may include a significant deterioration of operating results, changes in business plans such as a disposition, or changes in anticipated future cash flows. If an impairment indicator is present, we evaluate recoverability of assets to be held and used by a comparison of the carrying value of the assets to future undiscounted net cash flows expected to be generated by the assets. We group assets at the lowest level for which there are identifiable cash flows that are largely independent of the cash flows generated by other asset groups. If the total of the expected undiscounted future cash flows is less than the carrying amount of the asset group, we estimate the fair value of the asset group to determine whether an impairment loss should be recognized. An impairment loss is recognized for the difference between the fair value and carrying value of the asset group.
Comprehensive Income	Comprehensive Income
	Comprehensive income consists of net income, unrealized foreign currency translation adjustments and unrealized net loss and/or gain on interest rate derivatives.
Discontinued Operations	Discontinued operations
	The results of operations for business components meeting the criteria for discontinued operations are presented as such in our consolidated statements of comprehensive income (loss). For periods prior to the designation as discontinued operations, we reclassify the results of operations to discontinued operations.  In addition, the net gain or loss (including any impairment loss) on the disposal is presented as discontinued operations when recognized. The change in presentation for discontinued operations does not have any impact on our financial condition or results of operations. We combine the cash flows and assets and liabilities attributable to discontinued operations with the respective cash flows and assets and liabilities from continuing operations to the extent that they are immaterial. On July 8, 2013, we sold the United Kingdom financial services advisory business within our Financial, Risk & Compliance segment.  All significant cash flows from this business were eliminated as a result of the sale, and we have no continuing involvement in the operations of this business, and as such, the results of operations for this business have been reclassified and presented as discontinued operations for all periods presented. See Note 4 – Dispositions and Discontinued Operations for further information.

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2014
Acquisitions [Abstract]
Preliminary Opening Balance Sheet for Cymetrix
	Cash	$	1,357
	Accounts receivable, net		11,283
	Other current assets		1,563
	Property and equipment, net		11,824
	Goodwill		71,335
	Intangible assets		18,000
	Total assets	$	115,362
	Total liabilities	$	36,995
Beginning Balance of Cymetrix Intangible Assets
	Category	Useful Life (years)		Amount
	Trade name	4	$	1,900
	Customer lists and relationships	8.3		16,100
			$	18,000
Schedule Of Supplemental Unaudited Pro Forma Financial Information
		For the year ended
		December 31,
		2014			2013
	Total revenues	$	884,970		$	908,018
	Net income (loss) from continuing operations	$	-37,123		$	56,246
	Basic net income (loss) from continuing operations per basic share	$	-0.76		$	1.13
	Shares used in computing net income (loss) per basic share		48,741			49,771
	Diluted net income (loss) from continuing operations per diluted share	$	-0.76		$	1.10
	Shares used in computing net income (loss) per diluted share		48,741			50,951

Dispositions_And_Discontinued_1

Dispositions And Discontinued Operations (Tables)	12 Months Ended
	Dec. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]
Schedule Of Discontinued Operations
		For the year ended
		December 31,
		2014		2013		2012
	Revenues before reimbursements	$	-	$	6,904	$	21,193
	Total revenues	$	-	$	9,035	$	26,444
	Income (loss) from discontinued operations before income tax expense	$	509	$	-2,680	$	2,605
	Income tax expense from discontinued operations	$	-	$	239	$	668
	Income (loss) from discontinued operations, net of tax	$	509	$	-2,919	$	1,937

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Information [Abstract]
Schedule Of Segment Revenues Before Reimbursements, Segment Total Revenues And Segment Operating Profit
			For the year ended
			December 31,
			2014			2013		2012
	Revenues before reimbursements:
	Disputes, Investigations & Economics		$	309,570		$	301,545	$	340,036
	Financial, Risk & Compliance			135,498			155,656		141,421
	Healthcare			223,817			182,783		151,065
	Energy			97,667			94,449		89,668
	Total revenues before reimbursements		$	766,552		$	734,433	$	722,190
	Total revenues:
	Disputes, Investigations & Economics		$	333,273		$	326,130	$	364,426
	Financial, Risk & Compliance			162,637			190,116		177,722
	Healthcare			248,095			205,215		170,150
	Energy			115,612			114,124		105,899
	Total revenues		$	859,617		$	835,585	$	818,197
	Segment operating profit:
	Disputes, Investigations & Economics		$	104,466		$	99,828	$	123,288
	Financial, Risk & Compliance			58,929			62,487		55,926
	Healthcare			65,104			67,696		50,959
	Energy			30,507			31,280		31,721
	Total segment operating profit			259,006			261,291		261,894
	Segment reconciliation to income (loss) from continuing operations before income tax (benefit) expense:
	Reconciling items:
	General and administrative expenses			136,057			127,079		141,195
	Depreciation expense			19,580			16,180		14,986
	Amortization expense			5,959			6,826		6,767
	Other operating costs (benefit), net			118,580			-6,766		1,645
	Long-term compensation expense attributable to consultants (including share-based compensation expense)			11,611			14,825		16,048
	Operating income (loss)			-32,781			103,147		81,253
	Interest and other expense, net			5,477			4,145		4,503
	Income (loss) from continuing operations before income tax (benefit) expense		$	-38,258		$	99,002	$	76,750
Total Assets By Segment
		December 31,			December 31,
		2014			2013
	Disputes, Investigations & Economics	$	322,014		$	443,417
	Financial, Risk & Compliance		83,834			89,498
	Healthcare		289,229			173,066
	Energy		103,218			101,851
	Unallocated assets		105,198			96,365
	Total assets	$	903,493		$	904,197
Revenue By Geographic Region
			For the year ended
			December 31,
			2014			2013		2012
	Total revenue:
	United States		$	788,422		$	777,108	$	754,925
	United Kingdom			56,536			44,530		50,446
	Other			14,659			13,947		12,826
	Total		$	859,617		$	835,585	$	818,197
Assets By Geographic Region
			December 31,			December 31,
	Total assets:		2014			2013
	United States		$	810,262		$	773,331
	United Kingdom			74,316			100,603
	Other			18,915			30,263
	Total		$	903,493		$	904,197

Goodwill_And_Intangible_Assets1

Goodwill And Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill And Intangible Assets, Net [Abstract]
Schedule Of Goodwill Balance
		December 31,		December 31,
		2014		2013
	Goodwill	$	695,561	$	620,768
	Less - accumulated amortization		-5,425		-5,425
	Less - accumulated goodwill impairment		-122,045		-
	Goodwill, net	$	568,091	$	615,343
Schedule Of Change In Carrying Values Of Goodwill Assets By Segment
		Disputes,		Financial,
		Investigations		Risk &						Total
		& Economics		Compliance		Healthcare		Energy		Company
	Goodwill, net as of January 1, 2013	$	357,091	$	56,982	$	129,231	$	76,628	$	619,932
	Acquisitions		4,302		-		-		-		4,302
	Adjustments		-156		-6		-40		-		-202
	Disposition		-7,350		-1,519		-		-		-8,869
	Foreign currency		334		-127		-		-27		180
	Goodwill, net as of December 31, 2013	$	354,221	$	55,330	$	129,191	$	76,601	$	615,343
	Acquisitions		3,100		-		76,068		-		79,168
	Impairment		-122,045		-		-		-		-122,045
	Adjustments		-154		-35		-12		-		-201
	Disposition		-		-		-778		-		-778
	Foreign currency		-3,392		25		-		-29		-3,396
	Goodwill, net as of December 31, 2014	$	231,730	$	55,320	$	204,469	$	76,572	$	568,091
Schedule Of Finite-Lived Intangible Assets By Major Category
		December 31,		December 31,
		2014		2013
	Intangible assets:
	Customer lists and relationships	$	95,616	$	79,514
	Non-compete agreements		22,326		22,557
	Other		26,520		24,297
	Intangible assets, at cost		144,462		126,368
	Less: accumulated amortization		-117,960		-115,590
	Intangible assets, net	$	26,502	$	10,778
Schedule Of Intangible Assets Estimated Useful Lives
		Weighted Average
	Category	Remaining Years		Amount
	Customer lists and relationships, net		6.6	$	21,813
	Non-compete agreements, net		3.8		1,384
	Other intangible assets, net		3.1		3,305
	Total intangible assets, net		6	$	26,502
Schedule Of Amortization Expense
	Year Ending December 31,	Amount
	2015	$	7,235
	2016		5,647
	2017		4,322
	2018		3,146
	2019		1,976
	Thereafter		4,176
	Total	$	26,502

Net_Income_Loss_Per_Share_EPS_

Net Income (Loss) Per Share (EPS) (Tables)	12 Months Ended
	Dec. 31, 2014
Net Income (Loss) Per Share (EPS) [Abstract]
Schedule Of Weighted Average Number Of Shares
		For the year ended
		December 31,
		2014	2013	2012
	Basic shares	48,741	49,771	50,894
	Employee stock options	-	117	92
	Restricted stock and restricted stock units	-	949	562
	Contingently issuable shares	-	114	24
	Diluted shares	48,741	50,951	51,572
	Antidilutive shares1	1,338	349	589
	(1)   Stock options with exercise prices greater than the average market price of our common stock during the respective time periods were excluded from the computation of diluted shares because the impact of including the shares subject to these stock options in the diluted share calculation would have been antidilutive.
	Due to a net loss applicable to common shareholders for the year ended December 31, 2014, we excluded 1,235 in potentially dilutive securities from the computation as their effect would have been antidilutive.

ShareBased_Compensation_Expens1

Share-Based Compensation Expense (Tables)	12 Months Ended
	Dec. 31, 2014
Schedule Of Total Share-Based Compensation Expense
			For the year ended
			December 31,
			2014			2013			2012
	Amortization of restricted stock and restricted stock unit awards		$	8,283		$	9,977		$	8,513
	Amortization of stock option awards			758			828			1,216
	Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan			275			233			247
	Total share-based compensation expense		$	9,316		$	11,038		$	9,976
Schedule Of Share-Based Compensation Expense Showing Amount Attributable To Each Category
			For the year ended
			December 31,
			2014			2013			2012
	Cost of services before reimbursable expenses		$	4,965		$	5,854		$	5,646
	General and administrative expenses			4,351			5,184			4,330
	Total share-based compensation expense		$	9,316		$	11,038		$	9,976
Summary Of Restricted Stock Untis Outstanding Activity
		Number of		Weighted Average
		Shares		Measurement Date
		(000s)		Price
	Restricted stock outstanding at beginning of the period	217		$	15.84
	Vested	-211			15.75
	Forfeited	-6			18.56
	Restricted stock outstanding at end of period	-		$	-
Summary Of Restricted Stock Unit Activity
		Number of		Weighted Average
		Shares		Measurement Date
		(000s)		Price
	Restricted stock units outstanding at beginning of the period	1,879		$	11.94
	Granted	777			17.90
	Vested	-707			10.83
	Forfeited	-48			14.46
	Restricted stock units outstanding at end of period	1,901		$	14.73
Schedule Of Stock Option Activity
		Number of		Weighted Average
		Shares		Exercise
		(000's)		Price
	Options outstanding beginning of the period	780		$	12.37
	Granted	93			18.45
	Exercised	-29			12.27
	Forfeited	-26			17.93
	Options outstanding at end of the period	818		$	12.89
	Options exercisable at end of the period	595		$	11.95
Schedule of stock options outstanding/ exercisable	The following table summarizes information regarding stock options outstanding at December 31, 2014:
	Range of Measurement Date Prices	Outstanding		Average			Remaining
		Shares		Measurement			Exercise
		(000s)		Date Price			Period
	$0.00 — $9.99	94		$	9.54		1.7
	$10.00 — $14.99	631			12.57		1.8
	$15.00 — $19.99	93			18.45		5.2
	Total	818		$	12.89		2.2
	The following table summarizes information regarding stock options exercisable at December 31, 2014:
		Outstanding		Weighted Average			Remaining
		Shares		Exercise			Exercise
	Range of Exercise Prices	(000s)		Price			Period (years)
	$0.00 — $9.99	94		$	9.54		1.7
	$10.00 — $14.99	501			12.40		1.3
	Total	595		$	11.95		1.4
Schedule of Stock options oustanding by plan
							Shares
							Remaining
					Weighted		Available
		Outstanding			Average		for Future
		Shares			Exercise		Issuances
	Plan Category	(000s)			Price		(000s)
	Long-Term Incentive Plan	818		$	12.89		3,024
Schedule Of Assumptions Used In Fair Value Of Options
			2014		2013		2012
	Fair value of options granted		$		$		$
			7.53		5.89		6.14
	Expected volatility		45	%	55	%	56	%
	Risk free interest rate		1.7	%	0.7	%	1.0	%
	Forfeiture rate		0	%	0	%	0	%
	Dividend yield		0	%	0	%	0	%
	Expected lives (years)		5.0		4.5		4.5
Restricted Stock Units (RSUs) [Member]
Schedule of stock options outstanding/ exercisable
				Weighted
		Outstanding		Average
		Shares		Measurement
	Range of Measurement Date Prices	(000s)		Date Price
	$10.00 — $14.99	1,156			12.64
	$15.00 — $19.99	745			17.97
	Total restricted stock units outstanding	1,901		$	14.73

Supplemental_Consolidated_Bala1

Supplemental Consolidated Balance Sheet Information (Tables)	12 Months Ended
	Dec. 31, 2014
Supplemental Consolidated Balance Sheet Information [Abstract]
Components Of Accounts Receivable
		December 31,			December 31,
		2014			2013
	Billed amounts	$	135,787		$	121,335
	Engagements in process, net		62,712			55,650
	Allowance for uncollectible accounts		-10,847			-9,919
	Accounts receivable, net	$	187,652		$	167,066
Components Of Prepaid Expenses And Other Current Assets
		December 31,			December 31,
		2014			2013
	Notes receivable - current	$	3,701		$	4,906
	Prepaid recruiting and retention incentives		8,633			8,001
	Other prepaid expenses and other current assets		14,808			11,647
	Prepaid expenses and other current assets	$	27,142		$	24,554
Components Of Other Assets
		December 31,			December 31,
		2014			2013
	Notes receivable - non-current	$	3,401		$	7,155
	Capitalized client-facing software		2,163			5,586
	Prepaid recruiting and retention incentives - non-current		7,482			6,773
	Prepaid expenses and other non-current assets		4,340			3,322
	Other assets	$	17,386		$	22,836
Property And Equipment
			December 31,			December 31,
			2014			2013
	Furniture, fixtures and equipment		$	65,077		$	62,486
	Software			65,410			43,867
	Leasehold improvements			33,807			32,416
	Property and equipment, at cost			164,294			138,769
	Less: accumulated depreciation and amortization			-103,677			-94,431
	Property and equipment, net		$	60,617		$	44,338
Components Of Other Current Liabilities
		December 31,			December 31,
		2014			2013
	Deferred acquisition liabilities	$	26,202		$	5,773
	Deferred revenue		16,405			19,503
	Deferred rent - short term		3,006			997
	Other current liabilities		6,913			5,736
	Total other current liabilities	$	52,526		$	32,009
Components Of Other Non-Current Liabilities
		December 31,			December 31,
		2014			2013
	Deferred acquisition liabilities	$	1,760		$	8,038
	Deferred rent - long term		9,015			10,642
	Other non-current liabilities		3,612			7,336
	Total other non-current liabilities	$	14,387		$	26,016

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2014
Accumulated Other Comprehensive Loss [Abstract]
Summary Of Activity In Accumulated Other Comprehensive Loss
		For the year ended
		December 31,
		2014		2013		2012
	Unrealized gain (loss) on foreign exchange:
	Balance at beginning of period	$	-9,129	$	-8,418	$	-12,506
	Unrealized gain (loss) on foreign exchange		-2,844		-711		4,088
	Balance at end of period	$	-11,973	$	-9,129	$	-8,418
	Unrealized gain (loss) on derivatives:
	Balance at beginning of period	$	-212	$	-306	$	-275
	Unrealized loss on derivatives, net of reclassification		-127		-39		-339
	Reclassified to interest expense		380		222		514
	Income tax expense		-152		-89		-206
	Balance at end of period	$	-111	$	-212	$	-306
		2014		2013		2012
	Accumulated other comprehensive loss at December 31,	$	-12,084	$	-9,341	$	-8,724

Derivative_And_Hedging_Activit

Derivative And Hedging Activity (Tables)	12 Months Ended
	Dec. 31, 2014
Derivatives And Hedging Activity [Abstract]
Schedule Of Interest Rate Derivatives
		Number of				Total Notional Amount
	Month executed	Contracts	Beginning Date	Maturity Date	Rate	(millions)
	Nov-11	1	31-May-12	31-May-15	0.98%	$10.00
	Dec-11	2	31-Dec-12	31-Dec-15	1.17%	$10.00
	Mar-12	1	29-Jun-12	30-Jun-15	1.01%	$5.00
	May-12	1	28-Jun-13	27-May-16	1.15%	$5.00
	Jul-14	5	11-Jul-14	11-Jul-17	1.10%	$30.00

Other_Operating_Costs_Benefit_

Other Operating Costs (Benefit) (Tables)	12 Months Ended
	Dec. 31, 2014
Other Operating Costs (Benefit) [Abstract]
Components Of Other Operating Costs (Benefit)
		2014		2013		2012
	Office consolidation, net:
	Adjustments to office closure obligations, discounted and net of expected sublease income	$	-	$	-150	$	580
	Rent expense during office consolidation		725		-		-
	Accelerated depreciation		-		498		-
	Contingent acquisition liability adjustments, net		-4,992		-5,399		1,065
	Gain on disposition of assets		-541		-1,715		-
	Goodwill impairment		122,045		-		-
	Other impairment		1,343		-		-
	Other operating costs (benefit)	$	118,580	$	-6,766	$	1,645
Schedule Of Activity For Restructured Real Estate
		Office Space Reductions
	Balance at December 31, 2012	$	1,235
	Benefit to operations during the year ended December 31, 2013		-150
	Utilized during the year ended December 31, 2013		-685
	Balance at December 31, 2013	$	400
	Utilized during the year ended December 31, 2014		-158
	Balance at December 31, 2014	$	242

Lease_Commitments_Tables

Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2014
Lease Commitments [Abstract]
Schedule Of Future Minimum Lease Payments
	Year ending December 31,	Amount
	2015	$	23,064
	2016		21,364
	2017		18,055
	2018		14,860
	2019		13,119
	Thereafter		37,658
		$	128,120

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Taxes
Schedule Of Income Before Income Taxes
				For the year ended
				December 31,
				2014			2013			2012
		United States		$	-2,747		$	109,089		$	84,220
		Foreign			-35,511			-10,087			-7,470
		Total income (loss) from continuing operations before income tax (benefit) expense		$	-38,258		$	99,002		$	76,750
Schedule Of Income Tax Expense (Benefit)
			For the year ended
			December 31,
			2014			2013			2012
	Federal:
	Current		$	13,590		$	21,458		$	18,667
	Deferred			-13,401			14,703			9,136
	Total			189			36,161			27,803
	State:
	Current			2,949			4,440			4,349
	Deferred			-3,419			3,752			2,331
	Total			-470			8,192			6,680
	Foreign:
	Current			162			-429			-1,621
	Deferred			-1,232			-34			-344
	Total			-1,070			-463			-1,965
	Total federal, state and foreign income tax (benefit) expense from continuing operations		$	-1,351		$	43,890		$	32,518
Schedule Of Effective Income Tax Rate Reconciliation
			For the year ended
			December 31,
			2014			2013			2012
		Federal tax (benefit) expense at the statutory rate	-35	%		35.0	%		35.0	%
		State tax expense at the statutory rate, net of federal tax benefits	-			6.0			6.0
		Foreign taxes	0.1			1.1			0.9
		Effect of goodwill impairment	30.7			-			-
		Effect of enacted tax rate changes	0.5			-			-
		Effect of valuation allowances	-1.6			2.1			-
		Effect of non-deductible meals and entertainment expense	1.6			0.6			0.8
		Effect of other transactions, net	0.2			-0.5			-0.3
			-3.5	%		44.3	%		42.4	%
Schedule Of Deferred Income Taxes
			For the year ended
			December 31,
			2014			2013
		Deferred tax assets (liabilities) attributable to:
		Allowance for uncollectible receivables	$	4,115		$	4,055
		Deferred revenue		5,735			4,942
		Accrued compensation		2,306			4,329
		Accrued office consolidation costs		81			105
		Interest rate derivatives		60			143
		Share-based compensation		8,384			7,697
		Forgivable loans		1,848			2,349
		Foreign net operating losses		1,648			2,688
		Other		1,304			271
		Subtotal		25,481			26,579
		Foreign valuation allowance		-2,415			-3,222
		Deferred tax assets		23,066			23,357
		Goodwill and intangibles — domestic acquisitions		-73,638			-83,227
		Goodwill and intangibles — foreign acquisitions		-290			-1,627
		Depreciation and amortization		-9,316			-5,922
		Prepaid expenses		-2,696			-1,838
		Deferred tax liabilities		-85,940			-92,614
		Net deferred tax liabilities	$	-62,874		$	-69,257
Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits
		Amount
		(in thousands)
	Balance at January 1, 2014	$	329
	Additions based on tax positions of prior years		73
	Reductions based on tax positions of prior years		-173
	Settlements		-5
	Balance at December 31, 2014	$	224

Fair_Value_Tables

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value [Abstract]
Changes In The Deferred Contingent Consideration Liabilities
		For the year ended
		December 31,
		2014		2013
	Beginning Balance	$	6,322	$	13,384
	Acquisitions		20,285		1,046
	Accretion of acquisition-related contingent consideration		2,121		578
	Remeasurement of acquisition-related contingent consideration		-4,992		-5,399
	Payments		-464		-3,287
	Ending Balance	$	23,272	$	6,322
Schedule Of Assets And Liabilities Measured At Fair Value On Recurring Basis
			Quoted Prices in
			Active  Markets for	Significant Other		Significant
			Identical Assets	Observable  Inputs		Unobservable  Inputs
			(Level 1)	(Level 2)		(Level 3)			Total
	At December 31, 2014
	Interest rate derivatives, net	$	—	$	184	$	—	$	184
	Deferred contingent acquisition liabilities	$	—	$	—	$	23,272	$	23,272
	At December 31, 2013
	Interest rate derivatives, net	$	—	$	355	$	—	$	355
	Deferred contingent acquisition liabilities	$	—	$	—	$	6,322	$	6,322

Description_Of_Business_And_Ba1

Description Of Business And Basis Of Presentation (Narrative) (Details) (Non-U.S. Subsidiaries [Member], Sales Revenue, Net [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Non-U.S. Subsidiaries [Member] | Sales Revenue, Net [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Concentration of total revenues outside of the United States	8.00%	7.00%	8.00%

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Capitalized compensation for software development	$1,600,000	$900,000	$900,000
Remeasurement of acquisition-related contingent consideration	-4,992,000	-5,399,000	1,065,000
Gain (loss) due to ineffectiveness	0	0	0
Interest differentials paid	400,000	200,000	500,000
Gains (losses) resulting from foreign exchange transactions	$200,000	($400,000)	($100,000)
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	3 years
Incentive recovery agreement, service term	1 year
Unsecured employee loan, term	3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	7 years
Lease expiration year	2025
Incentive recovery agreement, service term	5 years
Unsecured employee loan, term	5 years

Acquisitions_Narrative_Details

Acquisitions (Narrative) (Details) (USD $)	12 Months Ended			0 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	14-May-14	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Working capital adjustments	$5,400,000
Deferred contingent acquisition liabilities	23,272,000	6,322,000	13,384,000			23,272,000	6,322,000
Contingent acquisition liability adjustments, net	-4,992,000	-5,399,000	1,065,000
Goodwill acquired during the period	79,168,000	4,302,000
Disputes, Investigations & Economics [Member]
Business Acquisition [Line Items]
Goodwill acquired during the period	3,100,000	4,302,000
Healthcare [Member]
Business Acquisition [Line Items]
Goodwill acquired during the period	76,068,000
Cymetrix [Member] | Healthcare [Member]
Business Acquisition [Line Items]
Date of acquisition	14-May-14
Number of professionals in acquired entity	600
Cash paid, at closing				76,900,000
Working capital adjustments					1,400,000
Deferred contingent consideration liability, non-current	20,300,000					20,300,000
Period of time after end of performance period which the contingent payment must be made	90 days
Contingent consideration, maximum target	25,000,000					25,000,000
Acquisition costs	1,200,000					1,200,000
Contingent consideration, target period	1 year
Leerink, HLP and Assay [Member]
Business Acquisition [Line Items]
Cash paid, at closing	9,300,000
Purchase price	11,800,000
The Anson Group [Member]
Business Acquisition [Line Items]
Date of acquisition	1-Jul-13
Cash paid, at closing	3,000,000
Contingent consideration, maximum target	3,000,000					3,000,000
Purchase price	5,000,000
Deferred cash payments	300,000				700,000
Number of deferred acquisition payment installments	3					3
Contingent consideration, target period	3 years
Contingent acquisition liability adjustments, net	-200,000
Deferred acquisition liability	2,000,000
AFE Consulting [Member] | Disputes, Investigations & Economics [Member]
Business Acquisition [Line Items]
Date of acquisition	3-Dec-12
Cash paid, at closing	15,000,000
Contingent consideration, maximum target	10,000,000					10,000,000
Deferred contingent acquisition liabilities	4,400,000					4,400,000
Deferred cash payments	5,000,000
Contingent consideration, target period	4 years
Contingent acquisition liability adjustments, net	-2,600,000	-2,200,000
Purchase price, allocation of identifiable intangible assets	3,100,000					3,100,000
Goodwill acquired during the period	23,400,000
Restricted common stock issued, fair value	2,200,000					2,200,000
Common stock issued to acquiree	2,500,000
Easton Associates, LLC [Member] | Healthcare [Member]
Business Acquisition [Line Items]
Date of acquisition	2-Oct-12
Cash paid, at closing	8,000,000
Deferred cash payments						1,400,000	1,400,000
Deferred acquisition liability	4,100,000
Purchase price, property and equipment acquired	100,000					100,000
Purchase price, allocation of identifiable intangible assets	1,900,000					1,900,000
Goodwill acquired during the period	9,800,000
Empath Consulting, Inc. [Member] | Healthcare [Member]
Business Acquisition [Line Items]
Date of acquisition	24-Aug-12
Cash paid, at closing	700,000
Contingent consideration, maximum target	4,500,000					4,500,000
Deferred contingent acquisition liabilities	3,200,000					3,200,000
Deferred cash payments	800,000
Contingent consideration, target period	46 months
Contingent acquisition liability adjustments, net	-1,800,000	-900,000
Purchase price, allocation of identifiable intangible assets	100,000					100,000
Purchase price, allocation of current assets	700,000					700,000
Goodwill acquired during the period	3,900,000
Pike Research, LLC [ Member] | Energy [Member]
Business Acquisition [Line Items]
Date of acquisition	2-Jul-12
Cash paid, at closing	1,900,000
Contingent consideration, maximum target	4,000,000					4,000,000
Deferred contingent acquisition liabilities	2,500,000					2,500,000
Deferred cash payments	700,000
Contingent consideration, target period	3 years
Contingent acquisition liability adjustments, net	-300,000	-2,300,000
Purchase price, allocation of identifiable intangible assets	100,000					100,000
Purchase price, allocation of other current liabilities	700,000					700,000
Purchase price, allocation of current assets	400,000					400,000
Goodwill acquired during the period	5,300,000
Small, Unnamed Acquisition [Member] | Disputes, Investigations & Economics [Member]
Business Acquisition [Line Items]
Date of acquisition	1-Nov-12
Cash paid, at closing	2,600,000
Purchase price	$4,200,000

Acquisitions_Opening_Balance_S

Acquisitions (Opening Balance Sheet for Cymetrix) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	14-May-14
In Thousands, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$568,091	$615,343	$619,932
Healthcare [Member]
Business Acquisition [Line Items]
Goodwill	204,469	129,191	129,231
Healthcare [Member] | Cymetrix [Member]
Business Acquisition [Line Items]
Cash				1,357
Accounts receivable, net				11,283
Other current assets				1,563
Property and equipment, net				11,824
Goodwill				71,335
Intangible assets				18,000
Total assets				115,362
Total liabilities				$36,995

Acquisitions_Beginning_Balance

Acquisitions (Beginning Balance of Cymetrix Intangible Assets) (Details) (Healthcare [Member], Cymetrix [Member], USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	14-May-14	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Amount	$18,000	$18,000
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life		4 years
Amount	1,900
Customer Lists and Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Life		8 years 3 months 18 days
Amount	$16,100

Acquisitions_Schedule_Of_Suppl

Acquisitions (Schedule Of Supplemental Unaudited Pro Forma Financial Information) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Acquisitions [Abstract]
Total revenues	$884,970	$908,018
Net income (loss) from continuing operations	($37,123)	$56,246
Basic net income (loss) from continuing operations per basic share	($0.76)	$1.13
Shares used in computing net income (loss) per basic share	48,741	49,771
Diluted net income (loss) from continuing operations per diluted share	($0.76)	$1.10
Shares used in computing net income (loss) per diluted share	48,741	50,951

Dispositions_And_Discontinued_2

Dispositions And Discontinued Operations (Narrative) (Details) (USD $)	12 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from disposition, net of selling costs	$2,324,000	$16,973,000
Gain on disposition of assets	541,000	1,715,000
Goodwill disposition	778,000	8,869,000
Healthcare [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date of disposition	1-Oct-14
Proceeds from disposition, net of selling costs	1,500,000
Gain on disposition of assets	500,000
Intangible assets disposition	100,000
Other assets	200,000
Financial Services UK [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date of disposition		8-Jul-13
Proceeds from disposition, net of selling costs		1,400,000
Gain on disposition of assets			500,000
Number of employees sold with disposition		45
Contingent proceeds maximum target		2,500,000
Contingent consideration, target period		13 months
Disputes, Investigations & Economics [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill disposition		7,350,000
Disputes, Investigations & Economics [Member] | Economics Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Date of disposition		31-Jan-13
Proceeds from disposition, net of selling costs		15,600,000
Gain on disposition of assets		1,700,000
Number of employees sold with disposition		40
Working Capital Included in the Sale of Portion of a Business		6,500,000
Healthcare [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill disposition	$778,000

Dispositions_And_Discontinued_3

Dispositions And Discontinued Operations (Schedule Of Discontinued Operations) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations And Disposal Groups [Abstract]
Revenue before reimbursements		$6,904	$21,193
Total revenues		9,035	26,444
Income (loss) from discontinued operations before income tax expense	509	-2,680	2,605
Income tax expense from discontinued operations		239	668
Income (loss) from discontinued operations, net of tax	$509	($2,919)	$1,937

Segment_Information_Schedule_O

Segment Information (Schedule Of Segment Revenues Before Reimbursements, Segment Total Revenues And Segment Operating Profit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenues before reimbursements	$766,552	$734,433	$722,190
Total revenues	859,617	835,585	818,197
Total segment operating profit	259,006	261,291	261,894
General and administrative expenses	136,057	127,079	141,195
Depreciation expense	19,580	16,180	14,986
Amortization expense	5,959	6,826	6,767
Other operating costs (benefit), net	118,580	-6,766	1,645
Long-term compensation expense attributable to consultants (including share-based compensation expense)	11,611	14,825	16,048
Operating income (loss)	-32,781	103,147	81,253
Interest and other expense, net	5,477	4,145	4,503
Income (loss) from continuing operations before income tax (benefit) expense	-38,258	99,002	76,750
Disputes, Investigations & Economics [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	309,570	301,545	340,036
Total revenues	333,273	326,130	364,426
Total segment operating profit	104,466	99,828	123,288
Financial, Risk & Compliance [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	135,498	155,656	141,421
Total revenues	162,637	190,116	177,722
Total segment operating profit	58,929	62,487	55,926
Healthcare [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	223,817	182,783	151,065
Total revenues	248,095	205,215	170,150
Total segment operating profit	65,104	67,696	50,959
Energy [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	97,667	94,449	89,668
Total revenues	115,612	114,124	105,899
Total segment operating profit	$30,507	$31,280	$31,721

Segment_Information_Total_Asse

Segment Information (Total Assets By Segment) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$903,493	$904,197
Disputes, Investigations & Economics [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	322,014	443,417
Financial, Risk & Compliance [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	83,834	89,498
Healthcare [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	289,229	173,066
Energy [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	103,218	101,851
Unallocated Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$105,198	$96,365

Segment_Information_Schedule_O1

Segment Information (Schedule Of Revenue By Geographic Region) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenues	$859,617	$835,585	$818,197
United States [Member]
Segment Reporting Information [Line Items]
Total revenues	788,422	777,108	754,925
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total revenues	56,536	44,530	50,446
All other [Member]
Segment Reporting Information [Line Items]
Total revenues	$14,659	$13,947	$12,826

Segment_Information_Schedule_O2

Segment Information (Schedule Of Assets By Geographic Region) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Total assets	$903,493	$904,197
United States [Member]
Segment Reporting Information [Line Items]
Total assets	810,262	773,331
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total assets	74,316	100,603
All other [Member]
Segment Reporting Information [Line Items]
Total assets	$18,915	$30,263

Goodwill_And_Intangible_Assets2

Goodwill And Intangible Assets, Net (Goodwill Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	31-May-14	31-May-13	31-May-12
Goodwill [Line Items]
Goodwill impairment	$122,045
Healthcare [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value		41.00%
Energy [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value		41.00%
Financial, Risk & Compliance [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value		65.00%
Disputes, Investigations & Economics [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value			7.00%	18.00%
Percentage of carrying amount in excess of fair value		1.00%
Goodwill impairment	$122,045

Goodwill_And_Intangible_Assets3

Goodwill And Intangible Assets, Net (Finite-Lived Intangible Assets Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$5,959	$6,826	$6,767
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated remaining useful lives	10 years

Goodwill_And_Intangible_Assets4

Goodwill And Intangible Assets, Net (Schedule Of Goodwill Balance) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goodwill And Intangible Assets, Net [Abstract]
Goodwill	$695,561	$620,768
Less - accumulated amortization	-5,425	-5,425
Less - accumulated goodwill impairment	-122,045
Goodwill, net	$568,091	$615,343	$619,932

Goodwill_And_Intangible_Assets5

Goodwill And Intangible Assets, Net (Schedule Of Change In Carrying Values Of Goodwill Assets By Segment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
Balance as of the beginning of the period - Goodwill, net	$615,343	$619,932
Acquisitions	79,168	4,302
Impairment	-122,045
Adjustments	-201	-202
Disposition	-778	-8,869
Foreign currency	-3,396	180
Balance as of the end of the period - Goodwill, net	568,091	615,343
Disputes, Investigations & Economics [Member]
Goodwill [Line Items]
Balance as of the beginning of the period - Goodwill, net	354,221	357,091
Acquisitions	3,100	4,302
Impairment	-122,045
Adjustments	-154	-156
Disposition		-7,350
Foreign currency	-3,392	334
Balance as of the end of the period - Goodwill, net	231,730	354,221
Financial, Risk & Compliance [Member]
Goodwill [Line Items]
Balance as of the beginning of the period - Goodwill, net	55,330	56,982
Adjustments	-35	-6
Disposition		-1,519
Foreign currency	25	-127
Balance as of the end of the period - Goodwill, net	55,320	55,330
Healthcare [Member]
Goodwill [Line Items]
Balance as of the beginning of the period - Goodwill, net	129,191	129,231
Acquisitions	76,068
Adjustments	-12	-40
Disposition	-778
Balance as of the end of the period - Goodwill, net	204,469	129,191
Energy [Member]
Goodwill [Line Items]
Balance as of the beginning of the period - Goodwill, net	76,601	76,628
Foreign currency	-29	-27
Balance as of the end of the period - Goodwill, net	$76,572	$76,601

Goodwill_And_Intangible_Assets6

Goodwill And Intangible Assets, Net (Schedule Of Finite-Lived Intangible Assets By Major Category) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets, Net [Abstract]
Customer lists and relationships	$95,616	$79,514
Non-compete agreements	22,326	22,557
Other	26,520	24,297
Intangible assets, at cost	144,462	126,368
Less: accumulated amortization	-117,960	-115,590
Intangible assets, net	$26,502	$10,778

Goodwill_And_Intangible_Assets7

Goodwill And Intangible Assets, Net (Schedule Of Intangible Assets Estimated Useful Lives) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Intangible assets remaining amortization, Weighted Average Remaining Years	6 years
Intangible assets remaining amortization, Amount	$26,502	$10,778
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets remaining amortization, Weighted Average Remaining Years	6 years 7 months 6 days
Intangible assets remaining amortization, Amount	21,813
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets remaining amortization, Weighted Average Remaining Years	3 years 9 months 18 days
Intangible assets remaining amortization, Amount	1,384
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets remaining amortization, Weighted Average Remaining Years	3 years 1 month 6 days
Intangible assets remaining amortization, Amount	$3,305

Goodwill_And_Intangible_Assets8

Goodwill And Intangible Assets, Net (Schedule Of Amortization Expense) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill And Intangible Assets, Net [Abstract]
2015	$7,235
2016	5,647
2017	4,322
2018	3,146
2019	1,976
Thereafter	4,176
Total	$26,502

Net_Income_Loss_Per_Share_EPS_1

Net Income (Loss) Per Share (EPS) (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic shares	48,741	49,771	50,894
Contingently issuable shares		114	24
Diluted shares	48,741	50,951	51,572
Antidilutive shares	1,338	349	589
Potentially dilutive excluded from the computation as their effect would be anti-dilutive	1,235
Employee Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards		117	92
Restricted Stock And Restricted Stock Units [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards		949	562

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stockholders' Equity [Line Items]
Additional paid-in capital recorded through compensation expense	$2,583	$2,340	$750
Additional Paid-in Capital [Member]
Stockholders' Equity [Line Items]
Additional paid-in capital recorded through compensation expense	$2,583	$2,340	$750
Treasury Stock [Member]
Stockholders' Equity [Line Items]
Repurchases of common stock, shares	1,653,315	2,059,220	1,601,906
Share repurchases, weighted average share price	$16.50	$13.76	$11.78

ShareBased_Compensation_Expens2

Share-Based Compensation Expense (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$9,316,000	$11,038,000	$9,976,000
Expected fair value of performance base stock awards	4,000,000
Weighted-average vesting period	3 years
Share-based compensation expense/ benefit	-300,000	4,900,000
Total compensation cost related to the outstanding or unvested stock-based compensation awards	11,600,000
Number of Shares, Stock options, Granted	93,000
Number of shares granted, value	14,600,000
Intrinsic value of stock options outstanding	2,300,000
Intrinsic value of stock options exercisable	2,000,000
Market price of common stock	$15.37
Forfeiture rate	0.00%	0.00%	0.00%
ESPP, percent of market price purchased at	90.00%
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant under incentive plan	6,200,000
Shares available for future issuance	3,000,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	300,000	200,000	200,000
ESPP, stock issued during period, shares	166,425	164,941	198,956
Maximum number of shares remaining for repurchase	700,000
ESPP and SO, cash received	2,800,000	3,100,000	3,300,000
ESPP and SO exercises, excess tax benefits	100,000	100,000	200,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	1,000,000
Restricted Stock Units (RSU's) Performance Based Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Stock options, Granted	79,277
Number of shares granted, value	1,500,000
Restricted Stock And Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average vesting period	2 years
Total compensation cost related to the outstanding or unvested stock-based compensation awards	10,800,000
Restricted Stock Units And Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Stock options, Granted	870,482
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Stock options, Granted	777,509
Number of shares granted, value	13,900,000
Median Price, Outstanding, Period End	$15.97

ShareBased_Compensation_Expens3

Share-Based Compensation Expense (Schedule Of Total Share-Based Compensation Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-Based Compensation Expense [Abstract]
Amortization of restricted stock and restricted stock unit awards	$8,283	$9,977	$8,513
Amortization of stock option awards	758	828	1,216
Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan	275	233	247
Total share-based compensation	$9,316	$11,038	$9,976

ShareBased_Compensation_Expens4

Share-Based Compensation Expense (Schedule Of Share-Based Compensation Expense Showing Amount Attributable To Different Categories) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-Based Compensation Expense [Abstract]
Cost of services before reimbursable expenses	$4,965	$5,854	$5,646
General and administrative expenses	4,351	5,184	4,330
Total share-based compensation	$9,316	$11,038	$9,976

ShareBased_Compensation_Expens5

Share-Based Compensation Expense (Schedule Of Restricted Stock And Restricted Stock Unit By Price Range) (Details) (Restricted Stock Units (RSUs) [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	1,901	1,879
Weighted Average Measurement Date Price	$14.73	$11.94
$10.00-$14.99 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	1,156
Weighted Average Measurement Date Price	$12.64
$15.00-$19.99 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	745
Weighted Average Measurement Date Price	$17.97

ShareBased_Compensation_Expens6

Share-Based Compensation Expense (Summary Of Restricted Stock And Restricted Stock Unit Awards Activity) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Restricted stock and restricted stock units outstanding at beginning of the period	217
Number of shares, Vested	-211
Number of shares, Forfeited	-6
Weighted average measurement date price, Restricted stock and restricted stock units outstanding at beginning of the period	$15.84
Weighted average measurement date price, Vested	$15.75
Weighted average measurement date price, Forfeited	$18.56
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Restricted stock and restricted stock units outstanding at beginning of the period	1,879
Number of shares, Granted	777
Number of shares, Vested	-707
Number of shares, Forfeited	-48
Number of shares, Restricted stock and restricted stock units outstanding at end of the period	1,901
Weighted average measurement date price, Restricted stock and restricted stock units outstanding at beginning of the period	$11.94
Weighted average measurement date price, Granted	$17.90
Weighted average measurement date price, Vested	$10.83
Weighted average measurement date price, Forfeited	$14.46
Weighted average measurement date price, Restricted stock outstanding at end of the period	$14.73

ShareBased_Compensation_Expens7

Share-Based Compensation Expense (Schedule Of Stock Option Activity) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014
Share-Based Compensation Expense [Abstract]
Number of Shares, Oustanding Options Beginning	780
Number of Shares, Stock options, Granted	93
Number of Shares, Stock options, Exercised	-29
Number of Shares, Stock options, Forfeited	-26
Number of Shares, Outstanding Options Ending	818
Number of shares, Exercisable Stock Options Outstanding	595
Weighted Average Exercise Price, Oustanding Options Beginning	$12.37
Weighted Average Exercise Price, Options Granted	$18.45
Weighted Average Exercise Price, Options Exercised	$12.27
Weighted Average Exercise Price, Options Forfeited	$17.93
Weighted Average Exercise Price, Oustanding Options Beginning	$12.89
Weighted Average Exercise Price, Exercisable	$11.95

ShareBased_Compensation_Expens8

Share-Based Compensation Expense (Schedule Of Stock Options Outstanding/Exercisable) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	818	780
Weighted Average Exercise Price, Outstanding Options	$12.89	$12.37
Remaining Exercise Period, Outstanding	2 years 2 months 12 days
Outstanding Shares, Exercisable	595
Weighted Average Exercise Price, Exercisable	$11.95
Remaining Exercise Period (years), Exercisable	1 year 4 months 24 days
$0.00 - $9.99 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	94
Weighted Average Exercise Price, Outstanding Options	$9.54
Remaining Exercise Period, Outstanding	1 year 8 months 12 days
$10.00-$14.99 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	631
Weighted Average Exercise Price, Outstanding Options	$12.57
Remaining Exercise Period, Outstanding	1 year 9 months 18 days
$15.00-$19.99 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	93
Weighted Average Exercise Price, Outstanding Options	$18.45
Remaining Exercise Period, Outstanding	5 years 2 months 12 days

ShareBased_Compensation_Schedu

Share-Based Compensation (Schedule Of Stock Options By Plan) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	818	780
Weighted Average Exercise Price	$12.89	$12.37
Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Shares	818
Weighted Average Exercise Price	$12.89
Shares Remaining Available for Future Issuances	3,024

ShareBased_Compensation_Schedu1

Share-Based Compensation (Schedule Of Assumptions Used In Fair Value Of Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Fair value of options granted	$7.53	$5.89	$6.14
Expected volatility	45.00%	55.00%	56.00%
Risk free interest rate	1.70%	0.70%	1.00%
Forfeiture rate	0.00%	0.00%	0.00%
Dividend yield	0.00%	0.00%	0.00%
Contractual or expected lives (years)	5 years	4 years 6 months	4 years 6 months

Supplemental_Consolidated_Bala2

Supplemental Consolidated Balance Sheet Information (Narrative) (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	14-May-14
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Allowance for doubtful accounts	$10,847,000	$9,919,000
Capitalized cleint-facing software, additions	2,400,000	3,300,000
Transfer from developed software into property and equipment	3,100,000
Impairment on client-facing software assets	1,300,000
Employee retention and signing bonuses, term, years	6 years
Sign-on and retention bonuses issued	12,500,000	7,300,000
Investment in property and equipment	23,500,000
Disposals of fully depreciated assets	10,100,000
Cash payments in connection with deferred acquisition liabilities	5,400,000
Contingent acquisition liability adjustments, net	-4,992,000	-5,399,000	1,065,000
Deferred contingent consideration liability, current	-800,000
Deferred acquisition liabilities	1,760,000	8,038,000
Additional paid-in capital from accrued incentive compensation liabilities for the 2013 performance year	2,600,000
Unbilled Revenues [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Allowance for doubtful accounts	7,000,000	7,000,000
Other Noncurrent Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent acquisition liability adjustments, net	-4,200,000
Other Small Acquisitions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred acquisition liabilities	500,000
Technology Infrastructure and Software [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in property and equipment	19,700,000
Previously Accrued [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in property and equipment	2,500,000
Maximum [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lease expiration year	2025
Healthcare [Member] | Cymetrix [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accounts receivable, net					11,283,000
Property and equipment, net					11,824,000
Cash payments in connection with deferred acquisition liabilities				1,400,000
Deferred contingent consideration liability, non-current	$20,300,000

Supplemental_Consolidated_Bala3

Supplemental Consolidated Balance Sheet Information (Components Of Accounts Receivable) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Consolidated Balance Sheet Information [Abstract]
Billed amounts	$135,787	$121,335
Engagements in process	62,712	55,650
Allowance for uncollectible accounts	-10,847	-9,919
Accounts receivable, net	$187,652	$167,066

Supplemental_Consolidated_Bala4

Supplemental Consolidated Balance Sheet Information (Components Of Prepaid Expenses And Other Current Assets) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Consolidated Balance Sheet Information [Abstract]
Notes receivable - current	$3,701	$4,906
Prepaid recruiting and retention incentives	8,633	8,001
Other prepaid expenses and other current assets	14,808	11,647
Prepaid expenses and other current assets	$27,142	$24,554

Supplemental_Consolidated_Bala5

Supplemental Consolidated Balance Sheet Information (Components Of Other Assets) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Consolidated Balance Sheet Information [Abstract]
Notes receivable - non-current	$3,401	$7,155
Capitalized client-facing software	2,163	5,586
Prepaid recruiting and retention incentives - non-current	7,482	6,773
Prepaid expenses and other non-current assets	4,340	3,322
Other assets	$17,386	$22,836

Supplemental_Consolidated_Bala6

Supplemental Consolidated Balance Sheet Information (Property And Equipment) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$164,294	$138,769
Less: accumulated depreciation and amortization	-103,677	-94,431
Property and equipment, net	60,617	44,338
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	65,077	62,486
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	65,410	43,867
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$33,807	$32,416

Supplemental_Consolidated_Bala7

Supplemental Consolidated Balance Sheet Information (Components Of Other Current Liabilities) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Consolidated Balance Sheet Information [Abstract]
Deferred business acquisition obligations	$26,202	$5,773
Deferred revenue	16,405	19,503
Deferred rent - short term	3,006	997
Other current liabilities	6,913	5,736
Total other current liabilities	$52,526	$32,009

Supplemental_Consolidated_Bala8

Supplemental Consolidated Balance Sheet Information (Components Of Other Non-Current Liabilities) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Supplemental Consolidated Balance Sheet Information [Abstract]
Deferred acquisition liabilities	$1,760	$8,038
Deferred rent - long-term	9,015	10,642
Other non-current liabilities	3,612	7,336
Total other non-current liabilities	$14,387	$26,016

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at end of period	($12,084)	($9,341)	($8,724)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	-9,129	-8,418	-12,506
Unrealized gain (loss)	-2,844	-711	4,088
Balance at end of period	-11,973	-9,129	-8,418
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	-212	-306	-275
Unrealized gain (loss)	-127	-39	-339
Reclassified to interest expense	380	222	514
Income tax expense	-152	-89	-206
Balance at end of period	($111)	($212)	($306)

Derivatives_And_Hedging_Activi1

Derivatives And Hedging Activity (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Interest expense	$5,918,000	$4,433,000	$5,453,000
Interest Rate Derivatives [Member]
Derivative [Line Items]
Interest expense	400,000	200,000
Liability related to interest rate derivatives	$200,000	$400,000

Derivatives_And_Hedging_Activi2

Derivatives And Hedging Activity (Schedule Of Interest Rate Derivatives) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
	contract
Interest Rate Contract November 2011 [Member]
Derivative [Line Items]
Number of contracts	1
Beginning date	31-May-12
Maturity date	31-May-15
Rate	0.98%
Total notional amount	$10
Interest Rate Contract December 2011 [Member]
Derivative [Line Items]
Number of contracts	2
Beginning date	31-Dec-12
Maturity date	31-Dec-15
Rate	1.17%
Total notional amount	10
Interest Rate Contract March 2012 [Member]
Derivative [Line Items]
Number of contracts	1
Beginning date	29-Jun-12
Maturity date	30-Jun-15
Rate	1.01%
Total notional amount	5
Interest Rate Contract May 2012 [Member]
Derivative [Line Items]
Number of contracts	1
Beginning date	28-Jun-13
Maturity date	27-May-16
Rate	1.15%
Total notional amount	5
Interest Rate Contract July 2014 [Member]
Derivative [Line Items]
Number of contracts	5
Beginning date	11-Jul-14
Maturity date	11-Jul-17
Rate	1.10%
Total notional amount	$30

Bank_Debt_Narrative_Details

Bank Debt (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Line of Credit Facility [Line Items]
Revolving credit facility	$400
Maximum borrowing capacity	500
Maturity date of bank borrowings	1-Sep-18
Aggregate bank borrowings	109.8	56.7
Additional bank borrowings	275
Credit agreement, average borrowing rate	2.30%	2.50%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Additional bank borrowings	$8.10
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Consolidated leverage ratio	1
Consolidated interest coverage ratio	4.9
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Consolidated interest coverage ratio	2
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Consolidated leverage ratio	3.25
Maximum consolidated leverage ratio first quarter of every calendar year	3.5
LIBOR [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%
LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%
LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	2.00%
Base Rate [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	0.00%
Base Rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	0.00%
Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%

Other_Operating_Costs_Benefit_1

Other Operating Costs (Benefit) (Narrative) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Income and Other Expense [Line Items]
Rent expense during office consolidation	$725,000
Accelerated depreciation - office consolidation		498,000
Adjustments to office closures obligations, discounted and net of expected sublease income		-150,000	580,000
Expected cash payments relating to office closure obligations	200,000
Gain on disposition of assets	541,000	1,715,000
Contingent acquisition liability adjustments, net	-4,992,000	-5,399,000	1,065,000
Goodwill impairment	122,045,000
Other impairment	1,343,000
Disputes, Investigations & Economics [Member]
Other Income and Other Expense [Line Items]
Goodwill impairment	122,045,000
Economics Group [Member] | Disputes, Investigations & Economics [Member]
Other Income and Other Expense [Line Items]
Gain on disposition of assets		$1,700,000

Other_Operating_Costs_Benefits

Other Operating Costs (Benefits) (Components Of Other Operating Costs (Benefit)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Operating Costs (Benefit) [Abstract]
Adjustments to office closures obligations, discounted and net of expected sublease income		($150)	$580
Rent expense during office consolidation	725
Accelerated depreciation		498
Contingent acquisition liability adjustments, net	-4,992	-5,399	1,065
Gain on disposition of assets	-541	-1,715
Goodwill impairment	122,045
Other impairment	1,343
Other operating costs (benefit)	$118,580	($6,766)	$1,645

Other_Operating_Costs_Benefit_2

Other Operating Costs (Benefit) (Schedule Of Activity For Restructured Real Estate) (Details) (Office Space Reductions [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Office Space Reductions [Member]
Beginning balance	$400	$1,235
Benefit to operations during the year		-150
Utilized during the year	-158	-685
Ending balance	$242	$400

Lease_Commitments_Narrative_De

Lease Commitments (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leased Assets [Line Items]
Operating leases rent expense	$26.30	$27.60	$28.70
Maximum [Member]
Operating Leased Assets [Line Items]
Lease expiration year	2025

Lease_Commitments_Schedule_Of_

Lease Commitments (Schedule Of Future Minimum Lease Payments) (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Lease Commitments [Abstract]
2015	$23,064
2016	21,364
2017	18,055
2018	14,860
2019	13,119
Thereafter	37,658
Total future minimum lease payments	$128,120

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	Dec. 31, 2014
In Millions, unless otherwise specified
Income Taxes
Cumulative amount of undistributed earnings, foreign subsidiaries	$6.70

Income_Taxes_Schedule_Of_Incom

Income Taxes (Schedule Of Income Before Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes
United States	($2,747)	$109,089	$84,220
Foreign	-35,511	-10,087	-7,470
Income (loss) from continuing operations before income tax (benefit) expense	($38,258)	$99,002	$76,750

Income_Taxes_Schedule_Of_Incom1

Income Taxes (Schedule Of Income Tax Expense (Benefit)) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes
Federal, Current	$13,590	$21,458	$18,667
Federal, Deferred	-13,401	14,703	9,136
Federal, Total	189	36,161	27,803
State, Current	2,949	4,440	4,349
State, Deferred	-3,419	3,752	2,331
State, Total	-470	8,192	6,680
Foreign, Current	162	-429	-1,621
Foreign, Deferred	-1,232	-34	-344
Foreign, Total	-1,070	-463	-1,965
Total federal, state and foreign income tax (benefit) expense from continuing operations	($1,351)	$43,890	$32,518

Income_Taxes_Schedule_Of_Effec

Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes
Federal tax expense at the statutory rate	-35.00%	35.00%	35.00%
State tax expense at the statutory rate, net of federal tax benefits		6.00%	6.00%
Foreign taxes	0.10%	1.10%	0.90%
Effect of goodwill impairment	30.70%
Effect of enacted tax rate changes	0.50%
Effect of valuation allowances	-1.60%	2.10%
Effect of non-deductible meals and entertainment expense	1.60%	0.60%	0.80%
Effect of other transactions, net	0.20%	-0.50%	-0.30%
Effective income tax rate	-3.50%	44.30%	42.40%

Income_Taxes_Schedule_Of_Defer

Income Taxes (Schedule Of Deferred Income Taxes) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Income Taxes
Allowance for uncollectible receivables	$4,115	$4,055
Deferred revenue	5,735	4,942
Accrued compensation	2,306	4,329
Accrued office consolidation costs	81	105
Interest rate derivatives	60	143
Share-based compensation	8,384	7,697
Forgivable loans	1,848	2,349
Foreign net operating losses	1,648	2,688
Other	1,304	271
Subtotal	25,481	26,579
Foreign valuation allowance	-2,415	-3,222
Deferred tax assets	23,066	23,357
Goodwill and intangibles - domestic acquisitions	-73,638	-83,227
Goodwill and intangibles - foreign acquistions	-290	-1,627
Depreciation and amortization	-9,316	-5,922
Prepaid expenses	-2,696	-1,838
Deferred tax liabilities	-85,940	-92,614
Net deferred tax liabilities	($62,874)	($69,257)

Income_Taxes_Reconciliation_Of

Income Taxes (Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Income Taxes
Beginning balance	$329
Additions based on tax positions of prior years	73
Reductions based on tax positions of prior years	-173
Settlements	-5
Ending balance	$224

Fair_Value_Narrative_Details

Fair Value (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value [Abstract]
Contingent acquisition liability adjustments, net	($4,992)	($5,399)	$1,065

Fair_Value_Changes_In_The_Defe

Fair Value (Changes In The Deferred Contingent Consideration Liabilities) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value [Abstract]
Beginning Balance	$6,322	$13,384
Acquisitions	20,285	1,046
Accretion of acquisition-related contingent consideration	2,121	578
Remeasurement of acquisition-related contingent consideration	-4,992	-5,399	1,065
Payments	-464	-3,287
Ending Balance	$23,272	$6,322	$13,384

Fair_Value_Schedule_Of_Assets_

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred contingent acquisition liabilities	$23,272	$6,322	$13,384
Fair Value on a Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate derivatives, net	184	355
Deferred contingent acquisition liabilities	23,272	6,322
Fair Value on a Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate derivatives, net	184	355
Fair Value on a Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred contingent acquisition liabilities	$23,272	$6,322

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2015
Defined Contribution Plan Disclosure [Line Items]
Percentage of employee's current contributions matched by employer	100.00%
Maximum percentage of employee's total eligible compensation that can be matched by employer	3.00%
Employer matching contributions	$7,600,000	$6,500,000	$6,000,000
Scenario, Forecast [Member]
Defined Contribution Plan Disclosure [Line Items]
Maximum amount of employee contributions that can be matched by employer per participant per year				7,950
Foreign Postretirement Benefit Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer matching contributions	$2,200,000	$2,000,000	$2,200,000

Valuation_And_Qualifying_Accou1

Valuation And Qualifying Accounts (Details) (Allowance for Doubtful Accounts [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$9,919	$15,375	$14,973
Charged to Expenses	5,009	-686	6,329
Deductions	-4,081	-4,770	-5,927
Balance at End of Year	$10,847	$9,919	$15,375