Navigant Consulting 10-Q 27 Oct 17 2017 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 23, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Entity Registrant Name	NAVIGANT CONSULTING INC
Entity Central Index Key	1,019,737
Current Fiscal Year End Date	--12-31
Trading Symbol	nci
Entity Filer Category	Large Accelerated Filer
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,017
Entity Common Stock, Shares Outstanding		45,919,941

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 9,005	$ 8,291
Accounts receivable, net	295,750	261,755
Prepaid expenses and other current assets	27,335	29,762
Total current assets	332,090	299,808
Non-current assets:
Property and equipment, net	88,139	82,953
Intangible assets, net	22,124	28,727
Goodwill	633,045	625,027
Other assets	23,658	18,282
Total assets	1,099,056	1,054,797
Current liabilities:
Accounts payable	12,233	11,871
Accrued liabilities	14,035	16,144
Accrued compensation-related costs	89,335	106,779
Income tax payable	1,648	1,564
Other current liabilities	29,452	38,616
Total current liabilities	146,703	174,974
Non-current liabilities:
Deferred income tax liabilities	84,389	77,737
Other non-current liabilities	35,834	32,579
Bank debt non-current	176,723	135,030
Total non-current liabilities	296,946	245,346
Total liabilities	443,649	420,320
Stockholders' equity:
Common stock	58	57
Additional paid-in capital	656,616	644,519
Treasury stock	(209,373)	(181,361)
Retained earnings	227,875	196,468
Accumulated other comprehensive loss	(19,769)	(25,206)
Total stockholders' equity	655,407	634,477
Total liabilities and stockholders' equity	$ 1,099,056	$ 1,054,797

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Consolidated Statements Of Comprehensive Income [Abstract]
Revenues before reimbursements	$ 237,505	$ 237,115	$ 708,954	$ 699,075
Reimbursements	24,771	24,294	68,005	69,304
Total revenues	262,276	261,409	776,959	768,379
Cost of services before reimbursable expenses	161,597	156,061	495,370	467,967
Reimbursable expenses	24,771	24,294	68,005	69,304
Total cost of services	186,368	180,355	563,375	537,271
General and administrative expenses	44,180	42,126	127,390	126,464
Depreciation expense	6,742	7,008	22,041	20,545
Amortization expense	2,175	2,905	6,713	8,717
Other operating costs (benefit):
Contingent acquisition liability adjustments, net	1,014	480	2,213	1,330
Office consolidation, net			(38)	174
Deferred debt issuance costs write off			145
Other costs	1,620		1,620
Operating income	20,177	28,535	53,500	73,878
Interest expense	1,367	1,310	3,716	3,999
Interest income	(124)	(35)	(236)	(110)
Other expense (income), net	104	(350)	489	(1,134)
Income before income tax expense	18,830	27,610	49,531	71,123
Income tax expense	6,891	10,435	17,699	26,529
Net income	$ 11,939	$ 17,175	$ 31,832	$ 44,594
Basic net income per share	$ 0.26	$ 0.36	$ 0.68	$ 0.94
Shares used in computing basic per share data	46,619	47,369	46,888	47,448
Diluted net income per share	$ 0.25	$ 0.35	$ 0.66	$ 0.91
Shares used in computing diluted per share data	48,017	48,763	48,561	48,878
Net income	$ 11,939	$ 17,175	$ 31,832	$ 44,594
Other comprehensive income (loss), net of tax
Unrealized net gain (loss), foreign currency translation	1,865	(1,752)	5,409	(5,741)
Unrealized net gain (loss) on interest rate derivatives	(18)	69	(22)	(138)
Reclassification adjustment on interest rate derivatives included in interest expense and income tax expense	36	41	50	133
Other comprehensive gain (loss), net of tax	1,883	(1,642)	5,437	(5,746)
Total comprehensive income, net of tax	$ 13,822	$ 15,533	$ 37,269	$ 38,848

Consolidated Statements Of Stoc

Consolidated Statements Of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at December 31,2016	$ 57	$ (181,361)	$ 644,519	$ (25,206)	$ 196,468	$ 634,477
Cumulative-effect adjustment resulting from the adoption of ASU 2016-09 (see Note 2)			719		(425)	294
Balance, shares at Dec. 31, 2016	57,325	(10,339)
Comprehensive income				5,437	31,832	37,269
Issuances of common stock	$ 1		3,210			3,211
Issuances of common stock, shares	213
Vesting of restricted stock units, net of forfeitures and tax withholdings			(4,793)			(4,793)
Vesting of restricted stock units, net of forfeitures and tax withholdings, shares	455
Share-based compensation expense			10,414			10,414
Additional paid-in capital recorded through compensation expense			2,547			2,547
Repurchases of common stock		$ (28,012)				(28,012)
Repurchases of common stock, shares		(1,484)
Balance, shares at Sep. 30, 2017	57,993	(11,823)
Balance at December 31,2016						655,407
Balance at September 30, 2017	$ 58	$ (209,373)	$ 656,616	$ (19,769)	$ 227,875	$ 655,407

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 31,832	$ 44,594
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	22,041	20,545
Amortization expense	6,713	8,717
Share-based compensation expense	10,414	9,445
Deferred income taxes	7,054	625
Allowance for doubtful accounts receivable	6,344	7,006
Contingent acquisition liability adjustments, net	2,213	1,330
Other, net	1,827	1,085
Changes in assets and liabilities (net of acquisitions):
Accounts receivable	(39,933)	(63,917)
Prepaid expenses and other assets	(1,035)	5,315
Accounts payable	906	959
Accrued liabilities	1,069	1,084
Accrued compensation-related costs	(17,943)	296
Income taxes payable	(33)	16,940
Other liabilities	2,050	1,607
Net cash provided by operating activities	33,519	55,631
Cash flows from investing activities:
Purchases of property and equipment	(30,729)	(13,464)
Acquisitions of businesses, net of cash acquired		(7,995)
Other acquisition payments		(5,500)
Payments of acquisition liabilities		(1,165)
Other, net	(691)	(459)
Net cash used in investing activities	(31,420)	(28,583)
Cash flows from financing activities:
Issuances of common stock	3,211	3,568
Repurchases of common stock	(28,012)	(18,801)
Payments of contingent acquisition liabilities	(10,330)	(828)
Repayments to banks	(349,164)	(308,726)
Borrowings from banks	388,458	298,847
Payments of debt issuance costs	(1,292)
Other, net	(4,887)	(2,802)
Net cash used in financing activities	(2,016)	(28,742)
Effect of exchange rate changes on cash and cash equivalents	631	(157)
Net increase (decrease) in cash and cash equivalents	714	(1,851)
Cash and cash equivalents at beginning of the period	8,291	8,895
Cash and cash equivalents at end of the period	9,005	7,044
Supplemental Consolidated Cash Flow Information
Interest paid	2,987	3,008
Income taxes paid, net of refunds	$ 11,876	$ 7,004

Description Of Business And Bas

Description Of Business And Basis Of Presentation	9 Months Ended
	Sep. 30, 2017
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. (“Navigant,” “we,” “us,” or “our”) (NYSE: NCI) is a specialized, global professional services firm that helps clients take control of their future. With a focus on markets and clients facing transformational change and significant regulatory or legal pressures, Navigant primarily serves clients in the healthcare, energy and financial services industries. The accompanying unaudited consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ( “ SEC ” ) for interim reporting and do not include all of the information and disclosures required by accounting principles generally accepted in the United States of America ( “ GAAP ” ). The information contained herein includes all adjustments, consisting of normal and recurring adjustments except where indicated, which are, in the opinion of management, necessary for a fair presentation of the results of operations for the interim periods presented. The results of operations for the nine months ended September 30, 2017 are not necessarily indicative of the results to be expected for the enti re year ending December 31, 2017 . These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes as of and for the year ended December 31, 2016 included in our Annual Report on Form 10-K filed with the SEC on February 1 7, 2017 ( “ 201 6 Form 10-K ” ). The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the unaudited consolidated financial statements and the related notes. Actual results could differ from those estimates and may affect future results of operations and cash flows. We have evaluated events and transactions occurring after the balance sheet date and prior to the date of the filing of this report. 

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2017
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	2 . RECENT ACCOUNTING PRONOUNCEMENTS There have b een no material changes to our significant accounting policies and estimates from the informat ion provided in Part II, Item 8, “Financial Statements and Supplementary Data” in our 2016 Form 10-K. Recently Adopted Accounting Pronouncements On January 1, 2017, we adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. As required by the standard, excess tax benefits and deficiencies recognized on share-based compensation expense are recorde d in the consolidated statement of comprehensive income as a component of income tax expense. Previously, these amounts were recorded as a component of additional paid-in capital on the consolidated balance sheet . We elected to apply the change in presentatio n to the consolidated statement of cash flows prospectively to classify excess tax benefits as an operating activity rather than a financing activity. Upon adoption, we determined that we did not have previously unrecognized excess tax benefits to be recognized on a modified retrospective transition method as an adjustment to retained earnings. We will continue to classify cash pai d related to shares withheld to satisfy tax-withholding requirements as a financing activity, as required by the standard. We made a policy election to account for forfeitures as they occur, rather than estimating the expected forfeitures over the course of the vesting period. The cumulative-effect adjustment to retained earnings as of the date of adoption was $0.4 million, with a reduction in the related deferred tax liability of $0.3 million. ASU 2016-09 also requires that excess tax benefits and deficiencies be prospectively excluded from assumed future proceeds in the calculation of diluted weighted average shares when calculating diluted earnings per share utilizing the treasury stock method. We applied this change prospectively, and it did not have a material impact on our unaudited consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other: Simplifying the Test for Goodwill Impairment (Topic 350), which simplifies the goodwill impairment test by eliminating step 2, which is the step requiring companies to perform a hypothetical purchase price allocation to measure goodwill. Instead, under the new standard, impairment will be measured using the difference between the fair value of a reporting unit with its carrying amount. Any impairment charge will be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value, taking into consideration income tax effects from any deductible goodwill on the carrying amount of the reporting unit. This standard will be effective for public companies for annual and interim periods beginning after December 15, 2019 and will be applied prospectively. Early adoption is permitted for impairment tests performed on testing dates after January 1, 2017. We early adopted this standard during the first quarter of 2017; the adoption did not have a material effect on our unaudited consolidated financial statements or related disclosures. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. This update eliminates the requirement to separately measure and report hedge ineffectiveness and requires that all items that affect earnings be presented in the same income statement line as the hedged item. The update also provides alternatives for applying hedge accounting to additional hedging strategies and measuring the hedged item in fair value hedges of interest rate risk. This standard will be effective for financial statements issued by public companies for the annual and interim periods beginning after December 15, 2018. Early adoption of the standard is permitted. For cash flow and net investment hedges existing at the date of adoption, companies will apply a cumulative-effect adjustment to accumulated other comprehensive income with a corresponding adjustment to opening balance of retained earnings as of the beginning of the fiscal year that the company adopts the standard. The updated presentation and disclosure guidance is required prospectively. We early adopted this standard during the third quarter of 2017, and was applied prospectively. The adoption did not have a material impact on our unaudited consolidated financial statements or related disclosures. Recent Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This update is intended to improve the financial reporting requirements for revenue from contracts with customers by providing a principle-based approach. The core principle of the standard is that revenue should be recognized when the transfer of promised goods or services is made in an amount that the entity expects to be entitled to in exchange for the transfer of goods and services. The update also requires disclosures enabling users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. The FASB has recently issued several amendments to the standard, including clarification on principal versus agent considerations, accounting for licenses of intellectual property and identifying performance obligations. Although early adoption as of the original effective date of January 1, 2017 is permitted, we have elected to adopt the guidance effective January 1, 2018. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We currently anticipate that the largest impact to us of adopting the guidance will occur with contracts which include variable consideration. As a result, we anticipate using the cumulative catch-up transition method of adoption. We will continue to evaluate the impact of our pending adoption of this guidance to our consolidated financial statements, but our preliminary assessments of the impact of our adoption of this guidance are subject to change. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). This update amends the requirements for assets and liabilities recognized for all leases longer than twelve months. Lessees will be required to recognize a lease liability measured on a discounted basis, which is the lessee’s obligation to make lease payments arising from the lease, and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. This standard will be effective for financial statements issued by public companies for the annual and interim periods beginning after December 15, 2018. Early adoption of the standard is permitted. The standard will require a modified retrospective approach for leases existing at or entered into after the beginning of the earliest comparative period presented. We are currently evaluating the potential impact of our adoption of this guidance on our consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flow (Topic 230). This update is intended to reduce diversity in practice in how certain transactions are classified in the statement of cash flows. The update provides new guidance regarding the classification of debt prepayment or debt extinguishment costs, settlement of zero-coupon debt instruments, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, proceeds from the settlement of corporate-owned life insurance policies including bank-owned life insurance policies, distributions received from equity method investments, beneficial interests in securitized transactions, and separately identifiable cash flows and application of the predominance principle. This standard will be effective for financial statements issued by public companies for the annual and interim periods beginning after December 15, 2017. Early adoption of the standard is permitted. The standard will be applied in a retrospective approach for each period presented. We have completed an initial evaluation of the impact of our adoption of this standard and have determined that the manner in which we classify our contingent acquisition liability payments in the consolidated statement of cash flows will change. Based on our initial evaluation, our adoption of this standard may require an immaterial reclassification of a portion of the payments previously reported as financing activities for comparative periods in the statement of cash flows within our consolidated financial statements issued on or after January 1, 2018. Under this guidance, portions of these payments will be reclassified from financing activities to operating activities. We will continue to evaluate the potential impact of our adoption of this guidance on our consolidated financial statements, but our preliminary assessments of the impact of our adoption of this guidance are subject to change. In January 2017, the FASB issued ASU 2017-01, Business Combinations: Clarifying the Definition of a Business (Topic 805), which provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This standard will be effective for public companies for annual and interim periods beginning after December 15, 2017. Early adoption is permitted effective for transactions not yet reported in financial statements issued or made available for issuance. We are currently evaluating the potential impact of this guidance on our consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting. This update clarifies which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting. Specifically, an entity would not apply modification account ing if the fair value, vesting conditions, and classification as an equity or liability instrument are the same before and after the modification. Th is standard will be effective for financial statements issued by public companies for the annual and interim periods beginning after December 15, 2017. Early adoption of the standard is permitted. The standard will be applied prospectively to awards modified on or after the adoption date. We are currently evaluating the potential impact of our adoption of this guidance on our consolidated financial statements.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2017
Acquisitions [Abstract]
Acquisitions	3. ACQUISITIONS 2016 Acquisitions During the year ended December 31 , 2016, w e acquired three businesses, including Ecofys Investments B.V. (“Ecofys”), for a n aggregate purchase price of $19.1 million, of which $17.6 million was paid in cash at closing. Ecofys was integrated into our Energy segment, and the other two acquired businesses were integrated into our Healthcare segment. None of these acquisitions were material to our consolidated financial position. See Note 12 – Fair Value for additional information regarding deferred contingent consideration fair value adjustments. Pro Forma Information The following supplemental unaudited pro forma financial information was prepared as if the 2016 acquisitions had occurred as of January 1, 201 6 . 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 three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Total revenues $ 262,276 $ 267,928 $ 776,959 $ 788,579  Net income $ 11,939 $ 16,852 $ 31,832 $ 43,670  Basic net income per basic share $ 0.26 $ 0.36 $ 0.68 $ 0.92  Shares used in computing net income per basic share 46,619 47,369 46,888 47,448  Diluted net income per diluted share $ 0.25 $ 0.35 $ 0.66 $ 0.89  Shares used in computing net income per diluted share 48,017 48,763 48,561 48,878 

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2017
Segment Information [Abstract]
Segment Information	4 . SEGMENT INFORMATION Our business is assessed and resources are allocated based on the following four reportable segments: • The Healthcare segment provides consulting services and business process management services. Clients of this segment include healthcare providers, payers and life sciences companies. We help clients respond to market legislative changes such as the shift to an outcomes and value-based reimbursements model, ongoing industry consolidation and reorganization, Medicaid expansion, and the implementation of a new electronic health records system. • The Energy segment provides advisory services to utilities, governmental agencies, manufacturers and investors. We provide our clients with advisory solutions in business strategy and planning, distributed energy resources and renewables, energy efficiency and demand response, and grid modernization. In addition, we provide a broad array of benchmarking and research services. • The Financial Services Advisory and Compliance segment provides strategic, operational, valuation, risk management, investigative and compliance advisory services to clients primarily in the highly-regulated financial services industry, including major financial and insurance institutions. This segment also provides anti-corruption solut ions and anti-money laundering consulting , litigation support and tax compliance and valuation services to clients in a broad variety of industries. • The Disputes, Forensics & Legal Technology segment’s professional services include accounting, regulatory, construction and computer forensic expertise , as well as valuation and economic analysis . In addition to these capabilities, our professionals use technological tools to perform eDiscovery services and to deliver custom technology and data analytic solutions. The clients of this segment principally include companies along with their in-house counsel and law firms, as well as accounting firms, corporate boards and government agencies. 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 cost of services excluding long-term compensation expense attributable to c lient-service employees . Long-term compensation expense attributable to client-service employees includes share-based compensation expense and compensation expense attributed to certain retention incentives (see Note 7 — Share-B ased Compensation Expense and Note 8 — Supplemental Consolidated Balance Sheet Information). 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 summar ized as follows (in thousands):    For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016   Revenues before reimbursements:  Healthcare $ 95,860 $ 91,046 $ 280,540 $ 262,589  Energy 29,597 28,436 93,838 84,627  Financial Services Advisory and Compliance 38,016 40,265 104,606 113,909  Disputes, Forensics & Legal Technology 74,032 77,368 229,970 237,950  Total revenues before reimbursements $ 237,505 $ 237,115 $ 708,954 $ 699,075   Total revenues:  Healthcare $ 104,397 $ 100,033 $ 305,890 $ 288,521  Energy 35,144 32,076 109,410 96,210  Financial Services Advisory and Compliance 44,584 46,391 118,683 128,658  Disputes, Forensics & Legal Technology 78,151 82,909 242,976 254,990  Total revenues $ 262,276 $ 261,409 $ 776,959 $ 768,379   Segment operating profit:  Healthcare $ 29,693 $ 31,896 $ 85,422 $ 85,026  Energy 8,077 8,336 25,472 23,452  Financial Services Advisory and Compliance 15,937 17,682 39,858 48,699  Disputes, Forensics & Legal Technology 24,499 26,099 72,267 83,772  Total segment operating profit 78,206 84,013 223,019 240,949   Segment reconciliation to income before income tax expense:  Reconciling items:  General and administrative expenses 44,180 42,126 127,390 126,464  Depreciation expense 6,742 7,008 22,041 20,545  Amortization expense 2,175 2,905 6,713 8,717  Other operating costs, net 2,634 480 3,940 1,504  Long-term compensation expense attributable to client-service employees (including share-based compensation expense) 2,298 2,959 9,435 9,841  Operating income 20,177 28,535 53,500 73,878  Interest and other expense, net 1,347 925 3,969 2,755  Income before income tax expense $ 18,830 $ 27,610 $ 49,531 $ 71,123   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):     September 30, December 31,  2017 2016  Healthcare $ 402,920 $ 391,859  Energy 116,257 120,311  Financial Services Advisory and Compliance 111,879 98,846  Disputes, Forensics & Legal Technology 346,882 330,239  Unallocated assets 121,118 113,542  Total assets $ 1,099,056 $ 1,054,797 

Goodwill And Intangible Assets,

Goodwill And Intangible Assets, Net	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets, Net [Abstract]
Goodwill And Intangible Assets, Net	5 . GOOD WILL AND INTANGIBLE ASSETS, NET Changes made to our goodwill balances during the nine months ended September 30, 2017 and the year ended December 31, 2016 were as follows (in thousands):    Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics & Legal Technology Total Company  Gross goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 348,757 $ 752,497  Adjustments 12 2,749 (26) (115) 2,620  Foreign currency translation 381 879 651 3,487 5,398  Gross goodwill at September 30, 2017 272,425 81,552 54,409 352,129 760,515  Accumulated goodwill impairment - - - (122,045) (122,045)  Accumulated amortization - - - (5,425) (5,425)  Net goodwill at September 30, 2017 $ 272,425 $ 81,552 $ 54,409 $ 224,659 $ 633,045   Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics & Legal Technology Total Company  Gross goodwill at December 31, 2015 $ 264,163 $ 76,566 $ 55,341 $ 354,604 $ 750,674  Acquisitions 8,057 2,122 - - 10,179  Adjustments (12) - (35) (153) (200)  Foreign currency translation (176) (764) (1,522) (5,694) (8,156)  Gross goodwill at December 31, 2016 272,032 77,924 53,784 348,757 752,497  Accumulated goodwill impairment - - - (122,045) (122,045)  Accumulated amortization - - - (5,425) (5,425)  Net goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 221,287 $ 625,027    During the nine months ended September 3 0 , 2017, we recorded an adjustment to goodwill of $2.7 million related to the Ecofys acquisition in connection with working capital adjustments made during the period . We performed our annual goodwill im pairment test as of May 31, 2017. The key assumptions included: internal project ions completed during our first quarter 201 7 forecasting process; profit margin improvement generally consistent with our longer-term historical performance; assumptions regarding contingent revenue; revenue growth consistent with our longer term historical performance also considering our near term investment plans and growth objectives; discount rates based on comparable discount rates for our peer group; revenue and EBITDA multiples comparable to multiples for our peer group; Navigant -specific risk considerations; control premium ; and cost of capital based on our historical experience . Based on our assumptions, at that time, the estimated fair value exceeded the net asset carrying value for each of our reporting units as of May 31, 201 7 . Accordingly, there was no indication of impairment of our goodwill for any of our reporting units. As of May 31, 2017, the estimated fair value of our Healthcare, Energy, Financial Services Advisory and Compliance, and Disputes, Forensics & Legal Technology reporting units exceeded the fair value of invested capital by 30% , 38% , 70% , and 21% , respectively . We have reviewed our most recent financial projections 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. 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 impaired in the future. We will perform our next annual goodwill impair ment test as of May 31, 2018 . Intangible assets consisted of (in thousands):    September 30, December 31,  2017 2016   Intangible assets:  Customer lists and relationships $ 108,772 $ 106,536  Non-compete agreements 23,963 23,407  Other 28,784 28,274  Intangible assets, at cost 161,519 158,217  Less: accumulated amortization (139,395) (129,490)  Intangible assets, net $ 22,124 $ 28,727 Our intangible assets have estimated remaining useful lives ranging up to eight years which approximate the estimated periods of consumption. We will amortize the remaining net book values of intangible assets over their remaining useful lives. At September 30, 2017 , our intangible assets categories were as follows ( in thousands, except year data):     Weighted Average  Category Remaining Years Amount  Customer lists and relationships, net 5.0 $ 18,814  Non-compete agreements, net 3.0 1,935  Other intangible assets, net 2.7 1,375  Total intangible assets, net 4.6 $ 22,124  Total amortization expense was $ 6.7 million and $8.7 million for the nine months ended September 30, 2017 and 2016, respectively . T he estimated annual aggregate amortization expense to be recorded in the next five years related to intangible assets at September 30, 2017 is as follows (in thousands):     Year Ending December 31, Amount  2017 (includes January - September) $ 8,904  2018 6,337  2019 4,420  2020 3,367  2021 3,561  2022 581  

Net Income Per Share (EPS)

Net Income Per Share (EPS)	9 Months Ended
	Sep. 30, 2017
Net Income Per Share (EPS) [Abstract]
Net Income Per Share (EPS)	6. NET INCOME PER SHARE (EPS) The components of basic and diluted shares were as follows (in thousands and based on the weighted average days outstanding for the periods):     For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016   Basic shares 46,619 47,369 46,888 47,448  Employee stock options 87 132 168 106  Restricted stock units 1,257 1,206 1,437 1,243  Contingently issuable shares 54 56 68 81  Diluted shares (1) 48,017 48,763 48,561 48,878  Antidilutive shares (2) 348 92 177 181    (1) In connection with the adoption of ASU 2016-09 (s ee Note 2 – Recent Accounting Pronouncements), diluted shares for the nine months ended September 30, 2017 included approximately 164,000 shares which otherwise would not have been included but for the adoption of this guidance. (2) 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. 

Share-Based Compensation Expens

Share-Based Compensation Expense	9 Months Ended
	Sep. 30, 2017
Share-Based Compensation Expense [Abstract]
Share-Based Compensation Expense	7 . SHARE-BASED COMPENSATION EXPENSE Share-based compensation expense is recorded for restricted stock units, stock options and the discount given on employee stock purchase plan transactions. The amounts attributable to each category of share-based compensation expense were as follows (in thousands):    For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Amortization of restricted stock unit awards $ 2,797 $ 2,608 $ 9,592 $ 8,554  Amortization of stock option awards 152 232 531 633  Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan 63 81 291 258  Total share-based compensation expense $ 3,012 $ 2,921 $ 10,414 $ 9,445  Total share-based compensation expense consisted of the following (in thousands):    For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Cost of services before reimbursable expenses $ 1,377 $ 1,513 $ 5,593 $ 5,620  General and administrative expenses 1,635 1,408 4,821 3,825  Total share-based compensation expense $ 3,012 $ 2,921 $ 10,414 $ 9,445 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. At September 30, 2017 , we had $15.2 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 nine months ended September 30, 2017 , we granted an aggregate of 749,138 share-based awards, consisting of restricted stock units with an aggregate fair value of $16.8 million at the time of grant. These grants include certain awards that vest based on relative achievement of pre-established performance criteria.

Supplemental Consolidated Balan

Supplemental Consolidated Balance Sheet Information	9 Months Ended
	Sep. 30, 2017
Supplemental Consolidated Balance Sheet Information [Abstract]
Supplemental Consolidated Balance Sheet Information	8 . SUPPLEMENTAL CONSOLI DATED BALANCE SHEET INFORMATION Accounts Receivable, N et The components of accounts receivable were as follows (in thousands):    September 30, December 31,  2017 2016  Billed amounts $ 201,363 $ 183,656  Engagements in process 124,459 100,779  Allowance for uncollectible billed amounts (18,145) (14,967)  Allowance for uncollectible engagements in process (11,927) (7,713)  Accounts receivable, net $ 295,750 $ 261,755  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. Prepaid Expenses and Other Current Assets The components of prepaid expe nses and other current assets we re as follows (in thousands):    September 30, December 31,  2017 2016  Notes receivable - current $ 3,202 $ 2,636  Prepaid recruiting and retention incentives - current 8,414 9,173  Other prepaid expenses and other current assets 15,719 17,953  Prepaid expenses and other current assets $ 27,335 $ 29,762 Other Assets The components of other assets we re as follows (in thousands):   September 30, December 31,  2017 2016  Notes receivable - non-current $ 6,883 $ 2,943  Capitalized client-facing assets 1,947 1,733  Prepaid recruiting and retention incentives - non-current 8,608 11,116  Prepaid expenses and other non-current assets 6,220 2,490  Other assets $ 23,658 $ 18,282  Notes receivable, current and non-current, represent unsecured employee loans. These loans were issued to recruit or r etain certain senior-level client-service employees . During the nine months ended September 30, 2017, we issued loans aggregating $7.5 million , and during the nine months ended September 30, 2016 , no such loans were issued. The principal amount and accrued interest on these loans is either paid by the employee or forgiven by us over the term of the loans so long as the employee 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 term s of the loans. Capitalized client-facing assets include software and hardware that is used by our clients as part of their engagements. These amounts are amortized into cost of services before reimbursable expenses over their estimated remaining useful life. 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 voluntarily terminates employment or if the employee’s employment is terminated for “cause” prior to fulfilling his or her obligations to us. These amounts are amortized as compensation expense over the period s in which they are recoverable from the employee s , which periods are generally up to six years. During the nine months ended September 30, 2017 and 2016, we granted $5.7 million and $11.4 million, respectively, in sign-on and retention bonuse s. Property and Equipment, N et The components of p roperty and equipment, net were as follows (in thousands):     September 30, December 31,  2017 2016  Furniture, fixtures and equipment $ 71,326 $ 69,210  Software 91,696 83,766  Leasehold improvements 55,607 57,128  Property and equipment, at cost 218,629 210,104  Less: accumulated depreciation and amortization (130,490) (127,151)  Property and equipment, net $ 88,139 $ 82,953  During the nine months ended September 30, 2017 , we invested $30.7 million in property and equipment ( $3.7 million of which was accrued in prior periods), including $14.0 million in leasehold improvements related primarily to the build-out of our new Chicago corporate headquarters, $11.9 million in technology infrastructure and softwa re, and $4.8 million in furniture. During the nine months ended September 30, 2017, we retired $19.0 million of fully-depreciated assets. Other Current Liabilities The components of other current liabilities we re as follows (in thousands):    September 30, December 31,  2017 2016  Deferred acquisition liabilities - current $ 2,660 $ 10,780  Deferred revenue 20,588 21,258  Deferred rent - current 3,067 2,894  Other current liabilities 3,137 3,684  Total other current liabilities $ 29,452 $ 38,616    Other Non-Current Liabilities The components of other non-current liabilities we re as follows (in thousands):    September 30, December 31,  2017 2016  Deferred acquisition liabilities - non-current $ 1,154 $ 943  Deferred rent - non-current 26,214 19,776  Other non-current liabilities 8,466 11,860  Total other non-current liabilities $ 35,834 $ 32,579  D eferred acquisition liabilities , current and non-current, at September 30, 2017 consisted of cash obligations related to contingent purchase price considerations recorded at fair value . During the nine months ended September 30, 2017 , $10.0 million was paid for settlement of a deferred acquisition liability to the selling members of McKinnis Consulting Services LLC, which we acquired in December 2015. During the nine months ended September 30, 2017 , we recorded a fair value adjustment which increased deferred contingent acquisition liabilities by $2.2 million. See Note 12 – Fair Value for additional information regarding deferred contingent consideration fair value adjustments. The current and non-current portion s of deferred rent relate to tenant allowances and incentives on lease arrangements for our office facilities that expire at various dates through 2028 . During the nine months ended S eptember 30, 2017 we recorded $ 6.8 million in deferred rent related our new Chicago office space. At September 30, 2017 , other non-current liabilities included $0.8 million of performance-based long-term incentive compensation liabilities. During the nine months ended September 30, 2017, we reclassified $2.5 million of performance-based long-term incentive compensation liabilities to equity upon grant of the related restricted stock units. As part of our long-term incentive program for select senior-level client service employees and leaders, we grant restricted stock units which vest three years from the grant date . The value of equity granted is based on the relative achievement of certain performance targets during the year prior to grant . Deferred revenue represents advance billings to our clients for services that have not yet been performed and earned.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss	 9. ACCUMULATED OTHER COMPREHENSIVE LOSS The activity in accumulated other comprehensive loss was as follows (in thousands):    For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Unrealized loss on foreign exchange:  Balance at beginning of period $ (21,622) $ (20,435) $ (25,166) $ (16,446)  Unrealized gain (loss) on foreign exchange 1,865 (1,752) 5,409 (5,741)  Balance at end of period $ (19,757) $ (22,187) $ (19,757) $ (22,187)   Unrealized loss on derivatives:  Balance at beginning of period $ (30) $ (229) $ (40) $ (114)  Unrealized (loss) gain on derivatives in period, net of reclassification (18) 69 (22) (138)  Reclassified to interest expense 61 69 84 222  Income tax expense (25) (28) (34) (89)  Balance at end of period $ (12) $ (119) $ (12) $ (119)   2017 2016  Accumulated other comprehensive loss at September 30, $ (19,769) $ (22,306) 

Derivatives And Hedging Activit

Derivatives And Hedging Activity	9 Months Ended
	Sep. 30, 2017
Derivatives And Hedging Activity [Abstract]
Derivatives And Hedging Activity	10 . DERIVATIVES AND HEDGING ACTIVITY During the nine months ended September 30, 2017 , the interest rate derivatives outstanding were as follows (summarized based on month of execution):    Number of Total Notional Amount  Month executed Contracts Beginning Date Maturity Date Rate (millions)  June 2015 1 June 30, 2015 June 30, 2018 1.40% $5.0  April 2017 2 April 13, 2017 April 30, 2020 1.81% $15.0  July 2017 4 July 31, 2017 July 31, 2020 1.85% $17.5  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 nine months ended September 30, 2017 . During the nine months ended September 30, 2017 and 2016 , we recorded $0.1 million and $0.2 million, respectively, in interest expense associated with differentials received or paid under the interest rate derivatives.

Bank Debt

Bank Debt	9 Months Ended
	Sep. 30, 2017
Bank Debt [Abstract]
Bank Debt	1 1 . BANK DEBT On March 28, 2017, we entered into a new credit agreement with a syndicate of banks, amending and extending the maturity date of the five -year, $400 million revolving credit facility provided under our prior credit agreement. As amended and restated, the credit facility matures on March 28, 20 22 . 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 million. Borrowings and repayments under the credit facility may be made in multiple currencies including U nited States (U.S.) Dollars, Canadian Dollars, United Kingdom (U.K.) Pound s Sterling and Euro. At September 30, 2017 , we had aggregate borrowings outstanding of $176.7 million, compared to $135 . 0 million at December 31, 2016 . Based on our financial covenants at September 30, 2017 , approximately $219.7 m illion in additional borrowings w ere available to us under the credit facility. At September 30, 2017 , we had $3.6 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 September 30, 2017 , 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 0.00% and 1.00 % . Our average borrowing rate (including the impact of our interest rate derivatives; see Note 10 — Derivatives and Hedging Activity) was 2.7% and 2.4% for the three months ended September 30, 2017 and 2016, respectively, and 2.5% and 2.3% for the nine months ended September 30, 2017 and 2016, respectively. Our credit agreement contains certain financial covenants, including covenants that require that we maintain a consolidated leverage ratio of not greater than 3.5 :1 , with certain exceptions as defined in the agreement, and a consolidated interest coverage ratio (the rat io of the sum of adjusted EBIT, as defined in the credit agreement , to cash interest expense) of not less than 2.0 :1. At September 30, 2017 , under the definitions in the credit agreement, our consolidated leverage ratio was 1.2 :1 and our consolidated interest coverage ratio was 27.9 :1. In addition, the credit agreement contains customary affirmative and negative covenants (subject to exceptions), including covenants that in certain circumstances limit our ability to incur liens or other encumbrances, make investments and acquisitions , incur indebtedness, enter into mergers, consolidations and asset disposition s, pay cash dividends after the occurrence of an event of default, 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 covenants contained in our credit agreement at September 30, 2017 ; however, there can be no assurances that we will remain in compliance in the future.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2017
Fair Value [Abstract]
Fair Value	1 2 . 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. As circumstances change, we will reassess the level in which the inputs are included in the fair value hierarchy. We utilize a third party to value our interest rate derivatives. The interest rate derivatives are used to hedge the risk of variability from interest payment s on our borrowings (see Note 10 – Derivatives and Hedging Activity). A majority of the inputs used in determining the fair value of the derivatives is derived mainly from Level 2 observations which include counterparty quotations in over the counter markets. However, the credit valuation adjustments associated with the derivatives utilize Level 3 inputs , such as estimates of current credit spreads , to evaluate the likelihood of default by ourselves and our counterparties. We determined that these adjustments are not significant to the overall valuation of our derivatives. As a result, our interest rate derivatives are classified in Level 2 in the fair value hierarchy. 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 together with our corporate development and finance departments . Any change in the fair value estimate is recorded in the earnings of that period. During the nine months ended September 30, 2017 and 2016, we recorded $2.2 million and $1.3 million, respectively, in other operating costs for a net increase in the liability , reflecting changes in the fair value estimate of the deferred contingent acquisition liability for cer tain acquisitions made in 2016 and 2015 (see Note 3 – Acquisitions to the consolidated financial statements in our 2016 Form 10-K). The following table summarizes the changes in deferred contingent acquisition liabilities (in thousands):      For the nine months ended  September 30,  2017 2016   Beginning Balance $ 1,723 $ 8,782  Acquisitions - 1,500  Accretion of acquisition-related contingent consideration 208 516  Remeasurement of acquisition-related contingent consideration 2,213 1,330  Payments (330) (828)  Ending Balance $ 3,814 $ 11,300  At September 30, 2017 , the carrying value of our bank debt approximated fair value as it bears interest at variable rates, and we believe our credit risk is consistent with when the debt originated . 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 September 30, 2017 based upon the short-term nature of the assets and liabilities. Our financial assets and liabilities measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016 were as follows ( 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 September 30, 2017  Interest rate derivatives, net $ — $ 20 $ — $ 20  Deferred contingent acquisition liabilities $ — $ — $ 3,814 $ 3,814  At December 31, 2016  Interest rate derivatives, net $ — $ 64 $ — $ 64  Deferred contingent acquisition liabilities $ — $ — $ 1,723 $ 1,723 

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2017
Acquisitions [Abstract]
Schedule Of Supplemental Unaudited Pro Forma Financial Information	  For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Total revenues $ 262,276 $ 267,928 $ 776,959 $ 788,579  Net income $ 11,939 $ 16,852 $ 31,832 $ 43,670  Basic net income per basic share $ 0.26 $ 0.36 $ 0.68 $ 0.92  Shares used in computing net income per basic share 46,619 47,369 46,888 47,448  Diluted net income per diluted share $ 0.25 $ 0.35 $ 0.66 $ 0.89  Shares used in computing net income per diluted share 48,017 48,763 48,561 48,878 

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Information [Abstract]
Schedule Of Segment Revenues Before Reimbursements, Segment Total Revenues And Segment Operating Profit	   For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016   Revenues before reimbursements:  Healthcare $ 95,860 $ 91,046 $ 280,540 $ 262,589  Energy 29,597 28,436 93,838 84,627  Financial Services Advisory and Compliance 38,016 40,265 104,606 113,909  Disputes, Forensics & Legal Technology 74,032 77,368 229,970 237,950  Total revenues before reimbursements $ 237,505 $ 237,115 $ 708,954 $ 699,075   Total revenues:  Healthcare $ 104,397 $ 100,033 $ 305,890 $ 288,521  Energy 35,144 32,076 109,410 96,210  Financial Services Advisory and Compliance 44,584 46,391 118,683 128,658  Disputes, Forensics & Legal Technology 78,151 82,909 242,976 254,990  Total revenues $ 262,276 $ 261,409 $ 776,959 $ 768,379   Segment operating profit:  Healthcare $ 29,693 $ 31,896 $ 85,422 $ 85,026  Energy 8,077 8,336 25,472 23,452  Financial Services Advisory and Compliance 15,937 17,682 39,858 48,699  Disputes, Forensics & Legal Technology 24,499 26,099 72,267 83,772  Total segment operating profit 78,206 84,013 223,019 240,949   Segment reconciliation to income before income tax expense:  Reconciling items:  General and administrative expenses 44,180 42,126 127,390 126,464  Depreciation expense 6,742 7,008 22,041 20,545  Amortization expense 2,175 2,905 6,713 8,717  Other operating costs, net 2,634 480 3,940 1,504  Long-term compensation expense attributable to client-service employees (including share-based compensation expense) 2,298 2,959 9,435 9,841  Operating income 20,177 28,535 53,500 73,878  Interest and other expense, net 1,347 925 3,969 2,755  Income before income tax expense $ 18,830 $ 27,610 $ 49,531 $ 71,123  
Total Assets By Segment	  September 30, December 31,  2017 2016  Healthcare $ 402,920 $ 391,859  Energy 116,257 120,311  Financial Services Advisory and Compliance 111,879 98,846  Disputes, Forensics & Legal Technology 346,882 330,239  Unallocated assets 121,118 113,542  Total assets $ 1,099,056 $ 1,054,797 

Goodwill And Intangible Asset20

Goodwill And Intangible Assets, Net (Tables)	9 Months Ended
	Sep. 30, 2017
Goodwill And Intangible Assets, Net [Abstract]
Schedule Of Change In Carrying Values Of Goodwill Assets By Segment	  Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics & Legal Technology Total Company  Gross goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 348,757 $ 752,497  Adjustments 12 2,749 (26) (115) 2,620  Foreign currency translation 381 879 651 3,487 5,398  Gross goodwill at September 30, 2017 272,425 81,552 54,409 352,129 760,515  Accumulated goodwill impairment - - - (122,045) (122,045)  Accumulated amortization - - - (5,425) (5,425)  Net goodwill at September 30, 2017 $ 272,425 $ 81,552 $ 54,409 $ 224,659 $ 633,045   Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics & Legal Technology Total Company  Gross goodwill at December 31, 2015 $ 264,163 $ 76,566 $ 55,341 $ 354,604 $ 750,674  Acquisitions 8,057 2,122 - - 10,179  Adjustments (12) - (35) (153) (200)  Foreign currency translation (176) (764) (1,522) (5,694) (8,156)  Gross goodwill at December 31, 2016 272,032 77,924 53,784 348,757 752,497  Accumulated goodwill impairment - - - (122,045) (122,045)  Accumulated amortization - - - (5,425) (5,425)  Net goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 221,287 $ 625,027 
Schedule Of Finite-Lived Intangible Assets By Major Category	  September 30, December 31,  2017 2016   Intangible assets:  Customer lists and relationships $ 108,772 $ 106,536  Non-compete agreements 23,963 23,407  Other 28,784 28,274  Intangible assets, at cost 161,519 158,217  Less: accumulated amortization (139,395) (129,490)  Intangible assets, net $ 22,124 $ 28,727 
Schedule Of Intangible Assets Categories	  Weighted Average  Category Remaining Years Amount  Customer lists and relationships, net 5.0 $ 18,814  Non-compete agreements, net 3.0 1,935  Other intangible assets, net 2.7 1,375  Total intangible assets, net 4.6 $ 22,124 
Schedule Of Amortization Expense	  Year Ending December 31, Amount  2017 (includes January - September) $ 8,904  2018 6,337  2019 4,420  2020 3,367  2021 3,561  2022 581  

Net Income Per Share (EPS) (Tab

Net Income Per Share (EPS) (Tables)	9 Months Ended
	Sep. 30, 2017
Net Income Per Share (EPS) [Abstract]
Schedule Of Weighted Average Number Of Shares	    For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016   Basic shares 46,619 47,369 46,888 47,448  Employee stock options 87 132 168 106  Restricted stock units 1,257 1,206 1,437 1,243  Contingently issuable shares 54 56 68 81  Diluted shares (1) 48,017 48,763 48,561 48,878  Antidilutive shares (2) 348 92 177 181    (1) In connection with the adoption of ASU 2016-09 (s ee Note 2 – Recent Accounting Pronouncements), diluted shares for the nine months ended September 30, 2017 included approximately 164,000 shares which otherwise would not have been included but for the adoption of this guidance. (2) 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.

Share-Based Compensation Expe22

Share-Based Compensation Expense (Tables)	9 Months Ended
	Sep. 30, 2017
Share-Based Compensation Expense [Abstract]
Schedule Of Share-Based Compensation Expense Showing Amount Attributable To Each Category	  For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Amortization of restricted stock unit awards $ 2,797 $ 2,608 $ 9,592 $ 8,554  Amortization of stock option awards 152 232 531 633  Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan 63 81 291 258  Total share-based compensation expense $ 3,012 $ 2,921 $ 10,414 $ 9,445 
Schedule Of Total Share-Based Compensation Expense	  For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Cost of services before reimbursable expenses $ 1,377 $ 1,513 $ 5,593 $ 5,620  General and administrative expenses 1,635 1,408 4,821 3,825  Total share-based compensation expense $ 3,012 $ 2,921 $ 10,414 $ 9,445 

Supplemental Consolidated Bal23

Supplemental Consolidated Balance Sheet Information (Tables)	9 Months Ended
	Sep. 30, 2017
Supplemental Consolidated Balance Sheet Information [Abstract]
Components Of Accounts Receivable, Net	  September 30, December 31,  2017 2016  Billed amounts $ 201,363 $ 183,656  Engagements in process 124,459 100,779  Allowance for uncollectible billed amounts (18,145) (14,967)  Allowance for uncollectible engagements in process (11,927) (7,713)  Accounts receivable, net $ 295,750 $ 261,755 
Components Of Prepaid Expenses And Other Current Assets	  September 30, December 31,  2017 2016  Notes receivable - current $ 3,202 $ 2,636  Prepaid recruiting and retention incentives - current 8,414 9,173  Other prepaid expenses and other current assets 15,719 17,953  Prepaid expenses and other current assets $ 27,335 $ 29,762 
Components Of Other Assets	  September 30, December 31,  2017 2016  Notes receivable - non-current $ 6,883 $ 2,943  Capitalized client-facing assets 1,947 1,733  Prepaid recruiting and retention incentives - non-current 8,608 11,116  Prepaid expenses and other non-current assets 6,220 2,490  Other assets $ 23,658 $ 18,282 
Property And Equipment, Net	  September 30, December 31,  2017 2016  Furniture, fixtures and equipment $ 71,326 $ 69,210  Software 91,696 83,766  Leasehold improvements 55,607 57,128  Property and equipment, at cost 218,629 210,104  Less: accumulated depreciation and amortization (130,490) (127,151)  Property and equipment, net $ 88,139 $ 82,953 
Components Of Other Current Liabilities	  September 30, December 31,  2017 2016  Deferred acquisition liabilities - current $ 2,660 $ 10,780  Deferred revenue 20,588 21,258  Deferred rent - current 3,067 2,894  Other current liabilities 3,137 3,684  Total other current liabilities $ 29,452 $ 38,616 
Components Of Other Non-Current Liabilities	  September 30, December 31,  2017 2016  Deferred acquisition liabilities - non-current $ 1,154 $ 943  Deferred rent - non-current 26,214 19,776  Other non-current liabilities 8,466 11,860  Total other non-current liabilities $ 35,834 $ 32,579 

Accumulated Other Comprehensi24

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2017
Accumulated Other Comprehensive Loss [Abstract]
Summary Of Activity In Accumulated Other Comprehensive Loss	  For the three months ended For the nine months ended  September 30, September 30,  2017 2016 2017 2016  Unrealized loss on foreign exchange:  Balance at beginning of period $ (21,622) $ (20,435) $ (25,166) $ (16,446)  Unrealized gain (loss) on foreign exchange 1,865 (1,752) 5,409 (5,741)  Balance at end of period $ (19,757) $ (22,187) $ (19,757) $ (22,187)   Unrealized loss on derivatives:  Balance at beginning of period $ (30) $ (229) $ (40) $ (114)  Unrealized (loss) gain on derivatives in period, net of reclassification (18) 69 (22) (138)  Reclassified to interest expense 61 69 84 222  Income tax expense (25) (28) (34) (89)  Balance at end of period $ (12) $ (119) $ (12) $ (119)   2017 2016  Accumulated other comprehensive loss at September 30, $ (19,769) $ (22,306) 

Derivatives And Hedging Activ25

Derivatives And Hedging Activity (Tables)	9 Months Ended
	Sep. 30, 2017
Derivatives And Hedging Activity [Abstract]
Schedule Of Interest Rate Derivatives	  Number of Total Notional Amount  Month executed Contracts Beginning Date Maturity Date Rate (millions)  June 2015 1 June 30, 2015 June 30, 2018 1.40% $5.0  April 2017 2 April 13, 2017 April 30, 2020 1.81% $15.0  July 2017 4 July 31, 2017 July 31, 2020 1.85% $17.5 

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value [Abstract]
Changes In The Deferred Contingent Consideration Liabilities	   For the nine months ended  September 30,  2017 2016   Beginning Balance $ 1,723 $ 8,782  Acquisitions - 1,500  Accretion of acquisition-related contingent consideration 208 516  Remeasurement of acquisition-related contingent consideration 2,213 1,330  Payments (330) (828)  Ending Balance $ 3,814 $ 11,300 
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 September 30, 2017  Interest rate derivatives, net $ — $ 20 $ — $ 20  Deferred contingent acquisition liabilities $ — $ — $ 3,814 $ 3,814  At December 31, 2016  Interest rate derivatives, net $ — $ 64 $ — $ 64  Deferred contingent acquisition liabilities $ — $ — $ 1,723 $ 1,723 

Recent Accounting Pronounceme27

Recent Accounting Pronouncements (Narrative) (Details) - USD ($) $ in Thousands	Jan. 01, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment resulting from the adoption of ASU 2016-09 (see Note 2)		$ 294
Restatement Adjustment [Member] | Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax liabilities	$ (300)
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment resulting from the adoption of ASU 2016-09 (see Note 2)		$ (425)

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)item
Business Acquisition [Line Items]
Number of businesses acquired	3
Purchase price | $	$ 19.1
Cash paid for acquisition | $	$ 17.6
Energy [Member]
Business Acquisition [Line Items]
Number of businesses acquired	1
Healthcare [Member]
Business Acquisition [Line Items]
Number of businesses acquired	2

Acquisitions (Schedule Of Suppl

Acquisitions (Schedule Of Supplemental Unaudited Pro Forma Financial Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Acquisitions [Abstract]
Total revenues	$ 262,276	$ 267,928	$ 776,959	$ 788,579
Net income	$ 11,939	$ 16,852	$ 31,832	$ 43,670
Basic net income per basic share	$ 0.26	$ 0.36	$ 0.68	$ 0.92
Shares used in computing net income per basic share	46,619	47,369	46,888	47,448
Diluted net income per diluted share	$ 0.25	$ 0.35	$ 0.66	$ 0.89
Shares used in computing net income per diluted share	48,017	48,763	48,561	48,878

Segment Information (Narrative)

Segment Information (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017segment
Segment Information [Abstract]
Number of reportable segments	4

Segment Information (Schedule O

Segment Information (Schedule Of Segment Revenues Before Reimbursements, Segment Total Revenues And Segment Operating Profit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Total revenues before reimbursements	$ 237,505	$ 237,115	$ 708,954	$ 699,075
Total revenues	262,276	261,409	776,959	768,379
Total segment operating profit	78,206	84,013	223,019	240,949
General and administrative expenses	44,180	42,126	127,390	126,464
Depreciation expense	6,742	7,008	22,041	20,545
Amortization expense	2,175	2,905	6,713	8,717
Other operating costs, net	2,634	480	3,940	1,504
Long-term compensation expense attributable to client-service employees (including share-based compensation expense)	2,298	2,959	9,435	9,841
Operating income	20,177	28,535	53,500	73,878
Interest and other expense, net	1,347	925	3,969	2,755
Income before income tax expense	18,830	27,610	49,531	71,123
Healthcare [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	95,860	91,046	280,540	262,589
Total revenues	104,397	100,033	305,890	288,521
Total segment operating profit	29,693	31,896	85,422	85,026
Energy [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	29,597	28,436	93,838	84,627
Total revenues	35,144	32,076	109,410	96,210
Total segment operating profit	8,077	8,336	25,472	23,452
Financial Services Advisory and Compliance [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	38,016	40,265	104,606	113,909
Total revenues	44,584	46,391	118,683	128,658
Total segment operating profit	15,937	17,682	39,858	48,699
Disputes, Forensics & Legal Technology [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	74,032	77,368	229,970	237,950
Total revenues	78,151	82,909	242,976	254,990
Total segment operating profit	$ 24,499	$ 26,099	$ 72,267	$ 83,772

Segment Information (Total Asse

Segment Information (Total Assets By Segment) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,099,056	$ 1,054,797
Healthcare [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	402,920	391,859
Energy [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	116,257	120,311
Financial Services Advisory and Compliance [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	111,879	98,846
Disputes, Forensics & Legal Technology [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	346,882	330,239
Unallocated Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 121,118	$ 113,542

Goodwill And Intangible Asset33

Goodwill And Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	May 31, 2017
Goodwill [Line Items]
Adjustments			$ 2,620		$ (200)
Amortization expense	$ 2,175	$ 2,905	$ 6,713	$ 8,717
Maximum [Member]
Goodwill [Line Items]
Estimated remaining useful lives			8 years
Disputes, Forensics & Legal Technology [Member]
Goodwill [Line Items]
Adjustments			$ (115)		(153)
Percentage of fair value of reporting unit in excess of carrying value						21.00%
Healthcare [Member]
Goodwill [Line Items]
Adjustments			12		(12)
Percentage of fair value of reporting unit in excess of carrying value						30.00%
Energy [Member]
Goodwill [Line Items]
Adjustments			2,749
Percentage of fair value of reporting unit in excess of carrying value						38.00%
Financial Services Advisory and Compliance [Member]
Goodwill [Line Items]
Adjustments			(26)		$ (35)
Percentage of fair value of reporting unit in excess of carrying value						70.00%
Ecofys Investments B.V. [Member]
Goodwill [Line Items]
Adjustments			$ 2,700

Goodwill And Intangible Asset34

Goodwill And Intangible Assets, Net (Schedule Of Change In Carrying Values Of Goodwill Assets By Segment) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill [Line Items]
Gross goodwill, beginning balance	$ 752,497	$ 750,674
Acquisitions		10,179
Adjustments	2,620	(200)
Foreign currency translation	5,398	(8,156)
Gross goodwill, ending balance	760,515	752,497
Accumulated goodwill impairment	(122,045)	(122,045)
Accumulated amortization	(5,425)	(5,425)
Net goodwill	633,045	625,027
Healthcare [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	272,032	264,163
Acquisitions		8,057
Adjustments	12	(12)
Foreign currency translation	381	(176)
Gross goodwill, ending balance	272,425	272,032
Net goodwill	272,425	272,032
Energy [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	77,924	76,566
Acquisitions		2,122
Adjustments	2,749
Foreign currency translation	879	(764)
Gross goodwill, ending balance	81,552	77,924
Net goodwill	81,552	77,924
Financial Services Advisory and Compliance [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	53,784	55,341
Acquisitions
Adjustments	(26)	(35)
Foreign currency translation	651	(1,522)
Gross goodwill, ending balance	54,409	53,784
Net goodwill	54,409	53,784
Disputes, Forensics & Legal Technology [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	348,757	354,604
Acquisitions
Adjustments	(115)	(153)
Foreign currency translation	3,487	(5,694)
Gross goodwill, ending balance	352,129	348,757
Accumulated goodwill impairment	(122,045)	(122,045)
Accumulated amortization	(5,425)	(5,425)
Net goodwill	$ 224,659	$ 221,287

Goodwill And Intangible Asset35

Goodwill And Intangible Assets, Net (Schedule Of Finite-Lived Intangible Assets By Major Category) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Goodwill And Intangible Assets, Net [Abstract]
Customer lists and relationships	$ 108,772	$ 106,536
Non-compete agreements	23,963	23,407
Other	28,784	28,274
Intangible assets, at cost	161,519	158,217
Less: accumulated amortization	(139,395)	(129,490)
Intangible assets, net	$ 22,124	$ 28,727

Goodwill And Intangible Asset36

Goodwill And Intangible Assets, Net (Schedule Of Intangible Assets Categories) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	4 years 7 months 6 days
Amount	$ 22,124	$ 28,727
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	5 years
Amount	$ 18,814
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	3 years
Amount	$ 1,935
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	2 years 8 months 12 days
Amount	$ 1,375

Goodwill And Intangible Asset37

Goodwill And Intangible Assets, Net (Schedule Of Amortization Expense) (Details) $ in Thousands	Sep. 30, 2017USD ($)
Goodwill And Intangible Assets, Net [Abstract]
2017 (includes January - September)	$ 8,904
2,018	6,337
2,019	4,420
2,020	3,367
2,021	3,561
2,022	$ 581

Net Income Per Share (EPS) (Sch

Net Income Per Share (EPS) (Schedule Of Weighted Average Number Of Shares) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic shares	46,619	47,369	46,888	47,448
Contingently issuable shares	54	56	68	81
Diluted shares	48,017	48,763	48,561	48,878
Antidilutive shares	348	92	177	181
Employee Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards	87	132	168	106
Restricted Stock Units [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards	1,257	1,206	1,437	1,243
Accounting Standards Update 2016-09 [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Diluted shares			164

Share-Based Compensation Expe39

Share-Based Compensation Expense (Narrative) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)shares
Restricted Stock Units And Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs related to the outstanding or unvested stock-based compensation awards	$ 15.2
Weighted average remaining vesting period	2 years
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate share-based awards granted | shares	749,138
Aggregate fair value of share-based awards granted	$ 16.8
Vesting period	3 years

Share-Based Compensation Expe40

Share-Based Compensation Expense (Schedule Of Share-Based Compensation Expense Showing Amount Attributable To Each Category) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-Based Compensation Expense [Abstract]
Amortization of restricted stock unit awards	$ 2,797	$ 2,608	$ 9,592	$ 8,554
Amortization of stock option awards	152	232	531	633
Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan	63	81	291	258
Total share-based compensation expense	$ 3,012	$ 2,921	$ 10,414	$ 9,445

Share-Based Compensation Expe41

Share-Based Compensation Expense (Schedule Of Total Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 3,012	$ 2,921	$ 10,414	$ 9,445
Cost Of Services Before Reimbursable Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	1,377	1,513	5,593	5,620
General And Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 1,635	$ 1,408	$ 4,821	$ 3,825

Supplemental Consolidated Bal42

Supplemental Consolidated Balance Sheet Information (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Supplemental Consolidated Balance Sheet Information [Line Items]
Loans issued			$ 7,500	$ 0
Sign-on and retention bonuses issued			5,700	11,400
Purchases of property and equipment			30,729	13,464
Retired fully-depreciated assets	$ 19,000		19,000
Capital expenditures accrued			3,700
Contingent acquisition liability adjustments, net	1,014	$ 480	2,213	$ 1,330
Additional paid-in capital recorded through compensation expense			2,547
Deferred rent	6,800		6,800
Performance-based long-term incentive compensation liabilities	$ 800		800
Technology Infrastructure and Software [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment			11,900
Leasehold Improvements [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment			14,000
Furniture [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment			$ 4,800
Maximum [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Employee retention and signing bonuses, term, years			6 years
Lease expiration			Dec. 31, 2028
Healthcare [Member] | McKinnis Consulting Services, LLC [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Payment to the selling members for undistributed cash held in the business as of the closing			$ 10,000
Restricted Stock Units [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Vesting period			3 years

Supplemental Consolidated Bal43

Supplemental Consolidated Balance Sheet Information (Components Of Accounts Receivable, Net) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]
Billed amounts	$ 201,363	$ 183,656
Engagements in process	124,459	100,779
Allowance for uncollectible billed amounts	(18,145)	(14,967)
Allowance for uncollectible engagements in process	(11,927)	(7,713)
Accounts receivable, net	$ 295,750	$ 261,755

Supplemental Consolidated Bal44

Supplemental Consolidated Balance Sheet Information (Components Of Prepaid Expenses And Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]
Notes receivable - current	$ 3,202	$ 2,636
Prepaid recruiting and retention incentives - current	8,414	9,173
Other prepaid expenses and other current assets	15,719	17,953
Prepaid expenses and other current assets	$ 27,335	$ 29,762

Supplemental Consolidated Bal45

Supplemental Consolidated Balance Sheet Information (Components Of Other Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]
Notes receivable - non-current	$ 6,883	$ 2,943
Capitalized client-facing assets	1,947	1,733
Prepaid recruiting and retention incentives - non-current	8,608	11,116
Prepaid expenses and other non-current assets	6,220	2,490
Other assets	$ 23,658	$ 18,282

Supplemental Consolidated Bal46

Supplemental Consolidated Balance Sheet Information (Property And Equipment, Net) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 218,629	$ 210,104
Less: accumulated depreciation and amortization	(130,490)	(127,151)
Property and equipment, net	88,139	82,953
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	71,326	69,210
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	91,696	83,766
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 55,607	$ 57,128

Supplemental Consolidated Bal47

Supplemental Consolidated Balance Sheet Information (Components Of Other Current Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]
Deferred acquisition liabilities - current	$ 2,660	$ 10,780
Deferred revenue	20,588	21,258
Deferred rent - current	3,067	2,894
Other current liabilities	3,137	3,684
Total other current liabilities	$ 29,452	$ 38,616

Supplemental Consolidated Bal48

Supplemental Consolidated Balance Sheet Information (Components Of Other Non-Current Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Supplemental Consolidated Balance Sheet Information [Abstract]
Deferred acquisition liabilities - non-current	$ 1,154	$ 943
Deferred rent - non-current	26,214	19,776
Other non-current liabilities	8,466	11,860
Total other non-current liabilities	$ 35,834	$ 32,579

Accumulated Other Comprehensi49

Accumulated Other Comprehensive Loss (Summary Of Activity In Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period			$ (25,206)
Balance at end of period	$ (19,769)	$ (22,306)	(19,769)	$ (22,306)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(21,622)	(20,435)	(25,166)	(16,446)
Unrealized gain (loss)	1,865	(1,752)	5,409	(5,741)
Balance at end of period	(19,757)	(22,187)	(19,757)	(22,187)
Accumulated Net Loss from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(30)	(229)	(40)	(114)
Unrealized gain (loss)	(18)	69	(22)	(138)
Reclassified to interest expense	61	69	84	222
Income tax expense	(25)	(28)	(34)	(89)
Balance at end of period	$ (12)	$ (119)	$ (12)	$ (119)

Derivatives And Hedging Activ50

Derivatives And Hedging Activity (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Ineffectiveness related to the interest rate derivatives			$ 0
Interest expense	$ 1,367,000	$ 1,310,000	3,716,000	$ 3,999,000
Interest Rate Derivatives [Member]
Derivative [Line Items]
Interest expense			$ 100,000	$ 200,000

Derivatives And Hedging Activ51

Derivatives And Hedging Activity (Schedule Of Interest Rate Derivatives) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017USD ($)contract
Interest Rate Contract June 2015 [Member]
Derivative [Line Items]
Number of Contracts | contract	1
Beginning Date	Jun. 30, 2015
Maturity Date	Jun. 30, 2018
Rate	1.40%
Total Notional Amount | $	$ 5
Interest Rate Contract April 2017 [Member]
Derivative [Line Items]
Number of Contracts | contract	2
Beginning Date	Apr. 13, 2017
Maturity Date	Apr. 30, 2020
Rate	1.81%
Total Notional Amount | $	$ 15
Interest Rate Contract July 2017 [Member]
Derivative [Line Items]
Number of Contracts | contract	4
Beginning Date	Jul. 31, 2017
Maturity Date	Jul. 31, 2020
Rate	1.85%
Total Notional Amount | $	$ 17.5

Bank Debt (Narrative) (Details)

Bank Debt (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016	Sep. 30, 2017USD ($)	Sep. 30, 2016	Dec. 31, 2016USD ($)
Line of Credit Facility [Line Items]
Maturity period of bank borrowings			5 years
Revolving credit facility	$ 400,000		$ 400,000
Maturity date of bank borrowings			Mar. 28, 2022
Maximum borrowing capacity	500,000		$ 500,000
Aggregate bank borrowings	176,723		176,723		$ 135,030
Additional bank borrowings	$ 219,700		$ 219,700
Credit agreement, average borrowing rate	2.70%	2.40%	2.50%	2.30%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Additional bank borrowings	$ 3,600		$ 3,600
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Consolidated leverage ratio			1.2
Consolidated interest coverage ratio			27.9
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			3.5
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%

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value [Abstract]
Remeasurement of acquisition-related contingent consideration	$ 1,014	$ 480	$ 2,213	$ 1,330

Fair Value (Changes In The Defe

Fair Value (Changes In The Deferred Contingent Consideration Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance			$ 1,723	$ 8,782
Acquisitions				1,500
Accretion of acquisition-related contingent consideration			208	516
Remeasurement of acquisition-related contingent consideration	$ 1,014	$ 480	2,213	1,330
Payments of contingent acquisition liabilities			(10,330)	(828)
Ending Balance	$ 3,814	$ 11,300	3,814	$ 11,300
Other Acquisitions [Member]
Business Acquisition, Contingent Consideration [Line Items]
Payments of contingent acquisition liabilities			$ (330)

Fair Value (Schedule Of Assets

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred contingent acquisition liabilities	$ 3,814	$ 1,723	$ 11,300	$ 8,782
Fair Value on a Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate derivatives, net	20	64
Deferred contingent acquisition liabilities	3,814	1,723
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	20	64
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	$ 3,814	$ 1,723