Navigant Consulting 10-Q 2 May 18 2018 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
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	Q1
Document Fiscal Year Focus	2,018
Entity Common Stock, Shares Outstanding		45,187,592

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 6,646	$ 8,449
Accounts receivable, net and contract assets	288,744	267,841
Prepaid expenses and other current assets	33,616	32,921
Total current assets	329,006	309,211
Non-current assets:
Property and equipment, net	87,921	89,169
Intangible assets, net	19,247	21,053
Goodwill	638,953	637,287
Other assets	23,210	23,544
Total assets	1,098,337	1,080,264
Current liabilities:
Accounts payable	10,345	12,398
Accrued liabilities	15,923	13,895
Accrued compensation-related costs	60,567	96,773
Income tax payable	7,171	4,720
Other current liabilities	32,633	38,895
Total current liabilities	126,639	166,681
Non-current liabilities:
Deferred income tax liabilities	62,665	61,131
Other non-current liabilities	32,000	32,174
Bank debt non-current	184,327	132,944
Total non-current liabilities	278,992	226,249
Total liabilities	405,631	392,930
Stockholders' equity:
Common stock	58	58
Additional paid-in capital	662,924	659,825
Treasury stock	(235,723)	(224,366)
Retained earnings	282,999	270,995
Accumulated other comprehensive loss	(17,552)	(19,178)
Total stockholders' equity	692,706	687,334
Total liabilities and stockholders' equity	$ 1,098,337	$ 1,080,264

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenues before reimbursements	$ 243,879	$ 236,211
Reimbursements	20,641	21,626
Total revenues	264,520	257,837
Cost of services before reimbursable expenses	171,406	165,052
Reimbursable expenses	20,641	21,626
Total cost of services	192,047	186,678
General and administrative expenses	44,362	41,484
Depreciation expense	6,845	7,473
Amortization expense	1,856	2,319
Other operating costs:
Contingent acquisition liability adjustments, net		1,199
Other costs	983	107
Operating income	18,427	18,577
Interest expense	1,316	1,069
Interest income	(119)	(31)
Other expense (income), net	390	(217)
Income before income tax expense	16,840	17,756
Income tax expense	4,987	6,660
Net income	$ 11,853	$ 11,096
Basic net income per share	$ 0.26	$ 0.24
Shares used in computing basic per share data	45,120	46,932
Diluted net income per share	$ 0.25	$ 0.23
Shares used in computing diluted per share data	46,834	48,969
Net income	$ 11,853	$ 11,096
Other comprehensive income, net of tax
Unrealized net gain, foreign currency translation	1,369	830
Unrealized net gain on interest rate derivatives	250	11
Reclassification adjustment on interest rate derivatives included in interest expense and income tax expense	7	20
Other comprehensive gain, net of tax	1,626	861
Total comprehensive income, net of tax	$ 13,479	$ 11,957

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Comprehensive income (loss)	$ 11,957
Balance at Mar. 31, 2017					$ (24,345)
Balance at Dec. 31, 2017	687,334	$ 58	$ (224,366)	$ 659,825	(19,178)	$ 270,995
Balance, shares at Dec. 31, 2017		58,047	(12,661)
Cumulative-effect adjustment resulting from the adoption of ASU 2014-09 (Note 3)	151					151
Comprehensive income (loss)	13,479				1,626	11,853
Issuances of common stock	1,238			1,238
Issuances of common stock, shares		89
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings	(1,516)			(1,516)
Vesting of restricted stock and restricted stock units, net of forfeitures and tax withholdings, shares		94
Share-based compensation expense	3,377			3,377
Repurchases of common stock	(11,357)		$ (11,357)
Repurchases of common stock, shares			(569)
Balance at Mar. 31, 2018	$ 692,706	$ 58	$ (235,723)	$ 662,924	$ (17,552)	$ 282,999
Balance, shares at Mar. 31, 2018		58,230	(13,230)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 11,853	$ 11,096
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation expense	6,845	7,473
Amortization expense	1,856	2,319
Share-based compensation expense	3,377	3,022
Deferred income taxes	968	1,339
Allowance for doubtful accounts receivable	3,130	4
Contingent acquisition liability adjustments, net		1,199
Other, net	1,007	651
Changes in assets and liabilities (net of acquisitions):
Accounts receivable, net and contract assets	(23,615)	(4,279)
Prepaid expenses and other assets	(716)	(1,197)
Accounts payable	(2,100)	(81)
Accrued liabilities	2,200	584
Accrued compensation-related costs	(36,458)	(49,256)
Income taxes payable	2,926	4,353
Other liabilities	(6,120)	(188)
Net cash used in operating activities	(34,847)	(22,961)
Cash flows from investing activities:
Purchases of property and equipment	(5,750)	(13,789)
Other, net		(116)
Net cash used in investing activities	(5,750)	(13,905)
Cash flows from financing activities:
Issuances of common stock	1,238	1,914
Repurchases of common stock	(11,357)	(4,961)
Repayments to banks	(79,144)	(150,800)
Borrowings from banks	129,677	193,802
Payments of debt issuance costs		(1,166)
Other, net	(1,596)	(1,327)
Net cash provided by financing activities	38,818	37,462
Effect of exchange rate changes on cash and cash equivalents	(24)	245
Net (decrease) increase in cash and cash equivalents	(1,803)	841
Cash and cash equivalents at beginning of the period	8,449	8,291
Cash and cash equivalents at end of the period	6,646	9,132
Supplemental Consolidated Cash Flow Information
Interest paid	1,014	1,172
Income taxes paid, net of refunds	$ 891	$ 918

Description Of Business And Bas

Description Of Business And Basis Of Presentation	3 Months Ended
	Mar. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [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. Navigant’s professionals apply deep industry knowledge, substantive technical expertise, and an enterprising approach to help clients build, manage, and/or protect their business interests. 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. Across a range of advisory, consulting, outsourcing, and technology/analytics services, we believe our practitioners bring sharp insight that pinpoints opportunities and delivers powerful results. 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 three months ended March 31, 2018 are not necessarily indicative of the results to be expected for the entire year ending December 31, 2018. 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, 2017 included in our Annual Report on Form 10-K filed with the SEC on February 23, 2018 (“2017 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. Certain prior year results have been reclassified to reflect current year presentation.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
Recent Accounting Pronouncements	2. RECENT ACCOUNTING PRONOUNCEMENTS Recently Adopted Accounting Pronouncements On January 1, 2018 we adopted Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606). For updates to our revenue recognition policy see Note 3 – Revenue Recognition. Other than Topic 606, there have been no material changes to our significant accounting policies and estimates from the information provided in Part II, Item 8, “Financial Statements and Supplementary Data” in our 2017 Form 10-K. On January 1, 2018, we adopted 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. We 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 evaluation, adoption of this standard requires a 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 for periods beginning on or after January 1, 2018. Under this guidance, portions of these payments have been reclassified from financing activities to operating activities. We applied this change retrospectively, and it did not have a material impact on our consolidated financial statements. On January 1, 2018, we adopted 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. We applied this change prospectively, and it did not have a material impact on our consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted 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 February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220). This update addresses the effect of the change in the U.S. federal corporate tax rate due to the enactment of the December 22, 2017 Tax Cuts and Jobs Act (“Tax Reform”) on items within accumulated other comprehensive income (loss). ASU 2018-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. The Company is currently evaluating the impact of this new accounting standard on its consolidated financial statements.

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2018
Revenue Recognition [Abstract]
Revenue Recognition	3 . REVENUE RECOGNITION Recently Adopted Accounting Pronouncements On January 1, 2018, we adopted Topic 606 and all the related amendments (“new revenue standard”) to all contracts with customers not completed as of the adoption date using the cumulative catch-up transition (modified retrospective) method. Results as of January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting. As a result of the adoption, we recorded a net increase to opening retained earnings of $0.2 million, net of tax, with the impact primarily relating to certain contracts that include event-based variable consideration. Previously, we recognized event-based variable fees when contractual milestones or obligations were met, however, Topic 606 requires us to estimate and recognize the revenue from certain event-based variable fees over the period of performance to the extent that it is probable that a significant reversal will not occur. Effect of the Adoption of Topic 606 For the three months ended March 31, 2018 we recorded $2.8 million in additional revenue related to estimated variable consideration, which would not have been recognized under the prior revenue recognition guidance and have been included in accounts receivable, net and contract assets. Prior year results are presented in accordance with historical accounting. See our 2017 Form 10-K for our historical accounting policy. Significant Accounting Policy We recognize revenues when we transfer control of promised goods or services to our customers in an amount that reflects the consideration to which we expect to be entitled to in exchange for those goods and services. The majority of our revenues are generated from providing professional services under the following types of arrangements: time and material, fixed-fee, units of production and event or performance-based. For our time and material arrangements, the amounts charged correspond directly to the value our clients receive. These arrangements qualify for the right to invoice practical expedient which allows revenue to be recognized based on the number of hours worked by our Client-Service FTE at the contracted bill rates. In some cases, our time and materials engagements are subject to a maximum fee amount not to be exceeded, in which case we periodically evaluate the progress of work performed to ensure that the maximum amount billable to the client is not expected to be exceeded. Similarly, our units of production arrangements where the fee is unit/output priced at a per unit value qualifies for the right to invoice practical expedient. As such, revenue for units of production is recognized 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 (transaction price). 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 hours worked unless another method such as output or straight-line is more representative of value transferred to the client. We also have certain arrangements in which the fees are dependent on the completion of contractually defined outcomes. In many cases, this fee is earned in addition to an hourly or fixed-fee. These fees are rewarded when certain contractual milestones or outcomes are met. Contractually defined outcomes may be event-based or performance-based (for example based on obtaining a key performance indicator). For certain of these arrangements, the variable consideration is estimated at the expected value and subject to constraint based on risks specific to the contract. The estimate is evaluated in each reporting period and included in the total transaction price to the extent it is probable that a significant reversal of revenue will not occur. Transaction price is then recognized into revenue based upon efforts expended based on hours worked unless another method is more representative of revenue earned. In some cases, the estimation of the variable fees is complex and subject to many variables and may require significant judgement. The majority of our contracts have a single performance obligation. However, when certain arrangements have more than one performance obligation that are distinct from one another the transaction price is allocated to the separate performance obligations based on a relative standalone selling price basis. We determine the standalone selling prices based on our overall pricing or margins. Generally, we consider each of consulting/advisory services, transaction advisory or software based fees as one distinct performance obligation. Reimbursable expenses for our engagements include travel, out-of-pocket and independent contractor costs. Such expenses are passed through to clients as contractually allowed. Reimbursable expenses are considered a variable portion of the transaction price and are recognized into revenue consistent with the measure of progress of the respective performance obligation. Contract Assets and Liabilities We define contract assets as revenues recognized for fixed-fee, event-based or performance-based arrangements for which we are not contractually able to bill. These contract assets are included in accounts receivable, net and contract assets within the consolidated balance sheets. As of March 31, 2018, and December 31, 2017 contract assets were not material. In most cases, our standard fixed fee contracts allow for monthly billing. We define contract liabilities as advance payments or billings to our customers for services that have not yet been performed or earned and retainers. These liabilities are recorded within other current liabilities 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. As of March 31, 2018 and December 31, 2017 contract liabilities was $22.4 million and $28.0 million, respectively. During the three months ended March 31, 2018 $16.0 million was recognized into revenue from the opening balance. The remaining change related to amounts billed or payments received for work not yet performed. Performance Obligations For disclosure purposes, we apply the practical expedient to exclude the value of unsatisfied performance obligations for contracts with an enforceable duration of one year or less. We also apply the practical expedient to exclude those amounts for contracts in which we apply the right to invoice. The majority of our contracts include termination for convenience clauses which generally require 30 days notice with no penalty. The notice period required determines the contract duration resulting in very few agreements which are contractually enforceable beyond one year.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2018
Segment Reporting Measurement Disclosures [Abstract]
Segment Information	4 . SEGMENT INFORMATION Our business is assessed and resources are allocated based on the following four reportable segments: • The Healthcare • The Energy • The Financial Services Advisory and Compliance • The Disputes, Forensics and Legal Technology During the three months ended March 31, 2018, we moved our life sciences regulatory and compliance related business from the Disputes, Forensics and Legal Technology reporting segment into the Healthcare reporting segment. The change better aligns this group with our life sciences team within Healthcare as they have comparable client types and address similar business issues and industry dynamics. Prior year results have been adjusted to conform to current year presentation. 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 client-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-Based 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 reporting segments been stand-alone businesses. Information on the segment operations has been summarized as follows (in thousands): For the three months ended March 31, 2018 2017 Revenues before reimbursements: Healthcare $ 90,149 $ 94,010 Energy 33,704 32,498 Financial Services Advisory and Compliance 41,386 32,907 Disputes, Forensics and Legal Technology 78,640 76,796 Total revenues before reimbursements $ 243,879 $ 236,211 Total revenues: Healthcare $ 98,712 $ 103,016 Energy 37,637 37,722 Financial Services Advisory and Compliance 45,571 36,855 Disputes, Forensics and Legal Technology 82,600 80,244 Total revenues $ 264,520 $ 257,837 Segment operating profit: Healthcare $ 20,390 $ 28,472 Energy 10,728 8,879 Financial Services Advisory and Compliance 16,031 11,614 Disputes, Forensics and Legal Technology 27,908 25,480 Total segment operating profit 75,057 74,445 Segment reconciliation to income before income tax expense: Reconciling items: General and administrative expenses 44,362 41,484 Depreciation expense 6,845 7,473 Amortization expense 1,856 2,319 Other operating costs, net 983 1,306 Long-term compensation expense attributable to client-service employees (including share-based compensation expense) 2,584 3,286 Operating income 18,427 18,577 Interest and other expense, net 1,587 821 Income before income tax expense $ 16,840 $ 17,756 Total assets allocated by segment include accounts receivable, net and contract assets, certain retention-related prepaid assets, intangible assets, net and goodwill. The remaining assets are unallocated. Allocated assets by segment were as follows (in thousands): March 31, December 31, 2018 2017 Healthcare $ 416,227 $ 419,894 Energy 120,711 115,478 Financial Services Advisory and Compliance 102,775 95,534 Disputes, Forensics and Legal Technology 334,924 321,844 Unallocated assets 123,700 127,514 Total assets $ 1,098,337 $ 1,080,264

Goodwill And Intangible Assets,

Goodwill And Intangible Assets, Net	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	5 . GOODWILL AND INTANGIBLE ASSETS, NET During the three months ended March 31, 2018, we moved our life sciences regulatory and compliance related business from our Disputes, Forensics and Legal Technology into the Healthcare reporting segment to align with similar clients and industry (see Note 4 – Segment Information). As a result, a portion of the Disputes, Forensics and Legal Technology reporting unit was reclassed into Healthcare. We used the relative fair value approach based on an evaluation of expected future discounted cash flows to determine the reclassification amount. The changes made to the goodwill balances of our reporting units, including the reclassification for the three months ended March 31, 2018 and the year ended December 31, 2017, were as follows (shown in thousands): Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics and Legal Technology Total Company Gross goodwill at December 31, 2017 $ 278,130 $ 80,109 $ 54,462 $ 352,056 $ 764,757 Segment reclassification 15,934 - - (15,934 ) - Gross goodwill at December 31, 2017 adjusted $ 294,064 $ 80,109 $ 54,462 $ 336,122 $ 764,757 Adjustments (50 ) 200 (6 ) (26 ) 118 Foreign currency translation (50 ) 274 319 1,005 1,548 Gross goodwill at March 31, 2018 293,964 80,583 54,775 337,101 766,423 Accumulated goodwill impairment - - - (122,045 ) (122,045 ) Accumulated amortization - - - (5,425 ) (5,425 ) Net goodwill at March 31, 2018 $ 293,964 $ 80,583 $ 54,775 $ 209,631 $ 638,953 Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics and Legal Technology Total Company Gross goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 348,757 $ 752,497 Segment reclassification 15,934 - - (15,934 ) - Gross goodwill at December 31, 2016 adjusted $ 287,966 $ 77,924 $ 53,784 $ 332,823 $ 752,497 Acquisitions 5,837 - - - 5,837 Adjustments 9 1,231 (35 ) (154 ) 1,051 Foreign currency translation 252 954 713 3,453 5,372 Gross goodwill at December 31, 2017 adjusted 294,064 80,109 54,462 336,122 764,757 Accumulated goodwill impairment - - - (122,045 ) (122,045 ) Accumulated amortization - - - (5,425 ) (5,425 ) Net goodwill at December 31, 2017 $ 294,064 $ 80,109 $ 54,462 $ 208,652 $ 637,287 We performed our annual goodwill impairment test as of May 31, 2017. The key assumptions included: internal projections completed during our first quarter 2017 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, 2017. 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 and 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 segment change as of March 31, 2018 and determined that there was no indication of impairment. 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 impairment test as of May 31, 2018. Intangible assets consisted of (in thousands): March 31, December 31, 2018 2017 Intangible assets: Customer lists and relationships $ 110,387 $ 109,624 Non-compete agreements 24,292 24,217 Other 28,904 28,985 Intangible assets, at cost 163,583 162,826 Less: accumulated amortization (144,336 ) (141,773 ) Intangible assets, net $ 19,247 $ 21,053 Our intangible assets have estimated remaining useful lives ranging up to seven 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 March 31, 2018, our intangible assets categories were as follows (in thousands, except year data): Category Weighted Average Remaining Years Amount Customer lists and relationships, net 4.6 $ 16,497 Non-compete agreements, net 2.9 1,797 Other intangible assets, net 2.8 953 Total intangible assets, net 4.3 $ 19,247 Total amortization expense was $1.9 million and $2.3 million for the three months ended March 31, 2018 and 2017, respectively. The estimated annual aggregate amortization expense to be recorded in the next five years related to intangible assets at March 31, 2018 is as follows (in thousands): Year Ending December 31, Amount 2018 (includes January - March) $ 6,773 2019 4,621 2020 3,555 2021 3,705 2022 683 2023 1,081

Net Income Per Share (EPS)

Net Income Per Share (EPS)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [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 March 31, 2018 2017 Basic shares 45,120 46,932 Employee stock options 153 247 Restricted stock units 1,544 1,677 Contingently issuable shares 17 113 Diluted shares 46,834 48,969 Antidilutive shares (1) 33 3 ( 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.

Share-Based Compensation Expens

Share-Based Compensation Expense	3 Months Ended
	Mar. 31, 2018
Share Based Compensation [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 March 31, 2018 2017 Amortization of restricted stock unit awards $ 3,206 $ 2,656 Amortization of stock option awards 34 219 Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan 137 147 Total share-based compensation expense $ 3,377 $ 3,022 Total share-based compensation expense consisted of the following (in thousands): For the three months ended March 31, 2018 2017 Cost of services before reimbursable expenses $ 1,228 $ 1,617 General and administrative expenses 2,149 1,405 Total share-based compensation expense $ 3,377 $ 3,022 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 March 31, 2018, we had $12.8 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 three months ended March 31, 2018, we granted an aggregate of 212,646 share-based awards, consisting of restricted stock units with an aggregate fair value of $4.3 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	3 Months Ended
	Mar. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Supplemental Consolidated Balance Sheet Information	8 . SUPPLEMENTAL CONSOLIDATED BALANCE SHEET INFORMATION Accounts Receivable, Net and Contract Assets The components of accounts receivable, net and contract assets, were as follows (in thousands): March 31, December 31, 2018 2017 Billed amounts $ 200,785 $ 194,694 Engagements in process 119,537 102,026 Allowance for uncollectible billed amounts (19,474 ) (18,274 ) Allowance for uncollectible engagements in process (12,104 ) (10,605 ) Accounts receivable, net and contract assets $ 288,744 $ 267,841 Receivables attributable to engagements in process represent balances for services that have been performed and earned but have not been billed to the client. Engagements in process include contract assets. See Note 3 – Revenue Recognition for information on contract assets. 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 expenses and other current assets were as follows (in thousands): March 31, December 31, 2018 2017 Notes receivable - current $ 2,671 $ 3,047 Prepaid recruiting and retention incentives - current 9,546 8,705 Other prepaid expenses and other current assets 21,399 21,169 Prepaid expenses and other current assets $ 33,616 $ 32,921 Other Assets The components of other assets were as follows (in thousands): March 31, December 31, 2018 2017 Notes receivable - non-current $ 5,665 $ 6,260 Capitalized client-facing assets 1,153 1,803 Prepaid recruiting and retention incentives - non-current 9,860 8,611 Prepaid expenses and other non-current assets 6,532 6,870 Other assets $ 23,210 $ 23,544 Notes receivable, current and non-current, represent unsecured employee loans. These loans were issued to recruit or retain certain senior-level client-service employees. 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 terms 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 periods in which they are recoverable from the employees, which periods averaging three years. During the three months ended March 31, 2018 and 2017, we granted $5.1 million and $2.7 million, respectively, in sign-on and retention bonuses. Property and Equipment, Net The components of property and equipment, net were as follows (in thousands): March 31, December 31, 2018 2017 Furniture, fixtures and equipment $ 74,515 $ 72,776 Software 95,013 93,883 Leasehold improvements 60,509 57,689 Property and equipment, at cost 230,037 224,348 Less: accumulated depreciation and amortization (142,116 ) (135,179 ) Property and equipment, net $ 87,921 $ 89,169 During the three months ended March 31, 2018, we invested $5.8 million in property and equipment, including $3.1 million in leasehold improvements, $2.1 million in technology infrastructure and software, and $0.6 million in furniture and other equipment. Other Current Liabilities The components of other current liabilities were as follows (in thousands): March 31, December 31, 2018 2017 Deferred acquisition liabilities - current $ 3,698 $ 3,897 Contract liabilities 22,368 27,979 Deferred rent - current 3,450 3,341 Other current liabilities 3,117 3,678 Total other current liabilities $ 32,633 $ 38,895 Other Non-Current Liabilities The components of other non-current liabilities were as follows (in thousands): March 31, December 31, 2018 2017 Deferred acquisition liabilities - non-current $ 1,945 $ 1,972 Deferred rent - non-current 28,506 28,534 Other non-current liabilities 1,549 1,668 Total other non-current liabilities $ 32,000 $ 32,174 Deferred acquisition liabilities, current and non-current, at March 31, 2018 consisted of cash obligations related to contingent and definitive purchase price considerations recorded at fair value and net present value, respectively. See Note 13 – Fair Value for additional information regarding deferred contingent consideration fair value adjustments. The current and non-current portions of deferred rent relate to tenant allowances and incentives on lease arrangements for our office facilities that expire at various dates through 2028. At March 31, 2018, other non-current liabilities included $0.5 million of performance-based long-term incentive compensation liabilities. 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. Contract liabilities represents advance billings to our clients for services that have not yet been performed and earned. Further information regarding the amount of revenue recognized of the beginning contract liabilities balance in the three months ended March 31, 2018 can be found in Note 3 - Revenue Recognition. As a result of our adoption of Topic 606, as of January 1, 2018 we renamed Deferred Revenue to Contract liabilities.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income 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 March 31, 2018 2017 Unrealized loss on foreign exchange: Balance at beginning of period $ (19,308 ) $ (25,166 ) Unrealized gain on foreign exchange 1,369 830 Balance at end of period $ (17,939 ) $ (24,336 ) Unrealized loss on derivatives: Balance at beginning of period $ 130 $ (40 ) Unrealized gain on derivatives in period, net of reclassification 250 11 Reclassified to interest expense 10 34 Income tax expense (3 ) (14 ) Balance at end of period $ 387 $ (9 ) 2018 2017 Accumulated other comprehensive loss at March 31, (17,552 ) (24,345 )

Derivatives and Hedging Activit

Derivatives and Hedging Activity	3 Months Ended
	Mar. 31, 2018
Interest Rate Derivatives [Abstract]
Derivatives and Hedging Activity	10 . DERIVATIVES AND HEDGING ACTIVITY During the three months ended March 31, 2018, 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 1.78% $ 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 three months ended March 31, 2018. During both the three months ended March 31, 2018 and 2017, we recorded nil in interest expense associated with differentials received or paid under the interest rate derivatives.

Bank Debt

Bank Debt	3 Months Ended
	Mar. 31, 2018
Line Of Credit Facility [Abstract]
Bank Debt	1 1 . BANK DEBT Our credit agreement provides a $400 million revolving credit facility. The credit facility becomes due and payable in full upon maturity on March 28, 2022. 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 United States (U.S.) Dollars, Canadian Dollars, United Kingdom (U.K.) Pound Sterling and Euro. At March 31, 2018, we had aggregate borrowings outstanding of $184.3 million, compared to $132.9 million at December 31, 2017. Based on our financial covenants at March 31, 2018, approximately $211.7 million in additional borrowings were available to us under the credit facility. At March 31, 2018, we had $3.9 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 March 31, 2018, 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 3.0% and 2.7% for the three months ended March 31, 2018 and 2017, 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 ratio of the sum of adjusted EBIT, as defined in the credit agreement, to cash interest expense) of not less than 2.0:1. At March 31, 2018, under the definitions in the credit agreement, our consolidated leverage ratio was 1.3:1 and our consolidated interest coverage ratio was 23.6:1. 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 dispositions, 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 March 31, 2018; however, there can be no assurances that we will remain in compliance in the future.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	1 2 . INCOME TAXES On December 22, 2017, the President of the United States signed into law the Tax Reform. The legislation significantly changed U.S. tax law by, among other things, lowering corporate income tax rates, implementing a territorial tax system and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. Tax Reform permanently reduced the U.S. corporate income tax rate from a maximum of 35% to a 21% rate, effective January 1, 2018. While Tax Reform provides for a territorial tax system, beginning in 2018, it includes the global intangible low-taxed income (“GILTI”) provision. We elected to account for GILTI tax in the period in which it is incurred. The GILTI provisions require us to include in our U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiary’s tangible assets. As a result of the GILTI provisions, our effective tax rate increased by 0.7% for the three months ended March 31, 2018. In conjunction with the GILTI provisions, the new law provides a 13.125% effective tax rate on excess returns earned directly from foreign services. Specifically, the new law allows us a deduction equal to foreign derived intangible income ("FDII"). Our FDII is the amount of our "deemed intangible income" that is attributable to the performance of services for foreign persons or with respect to property outside the U.S. The FDII provisions allow us to deduct from our U.S. income tax return foreign services income in excess of a minimum return on our tangible assets. As a result of the FDII provisions, our effective tax rate decreased by 2.7% for the three months ended March 31, 2018. On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of Tax Reform. We recognized provisional tax impacts related to the deemed repatriated earnings and the revaluation of deferred tax assets and liabilities in its consolidated financial statements for the year ended December 31, 2017. The ultimate impact may differ from those provisional amounts, possibly materially, due to, among other things, additional analysis, changes in interpretations and assumptions we have made, additional regulatory guidance that may be issued, and actions we may take as a result of Tax Reform. Any adjustments made to the provisional amounts under SAB 118 should be recorded as discrete adjustments in the period identified (not to extend beyond the one-year measurement provided in SAB 118). During the three months ended March 31, 2018, our effective tax rate increased by 0.7% due to adjustments to its provisional amounts included in our consolidated financial statements for the year ended December 31, 2017. The accounting is expected to be completed when the 2017 U.S. corporate income tax return is filed in October of 2018.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	1 3 . 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 payments 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 three months ended March 31, 2017, we recorded $1.2 million 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 certain acquisitions made in 2016 (see Note 3 – Acquisitions to the consolidated financial statements in our 2017 Form 10-K). The following table summarizes the changes in deferred contingent acquisition liabilities (in thousands): For the three months ended March 31, 2018 2017 Beginning Balance $ 3,870 $ 1,723 Accretion of acquisition-related contingent consideration 59 49 Remeasurement of acquisition-related contingent consideration - 1,199 Payments (204 ) - Ending Balance $ 3,725 $ 2,971 At March 31, 2018, 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, net and contract assets and accounts payable, to approximate the fair value of the respective assets and liabilities at March 31, 2018 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 March 31, 2018 and December 31, 2017 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 March 31, 2018 Interest rate derivatives, net $ - $ (535 ) $ - $ (535 ) Deferred contingent acquisition liabilities $ - $ - $ 3,725 $ 3,725 At December 31, 2017 Interest rate derivatives, net $ - $ (213 ) $ - $ (213 ) Deferred contingent acquisition liabilities $ - $ - $ 3,870 $ 3,870

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting Measurement Disclosures [Abstract]
Schedule of Segment Revenues before Reimbursements, Segment Total Revenues and Segment Operating Profit	For the three months ended March 31, 2018 2017 Revenues before reimbursements: Healthcare $ 90,149 $ 94,010 Energy 33,704 32,498 Financial Services Advisory and Compliance 41,386 32,907 Disputes, Forensics and Legal Technology 78,640 76,796 Total revenues before reimbursements $ 243,879 $ 236,211 Total revenues: Healthcare $ 98,712 $ 103,016 Energy 37,637 37,722 Financial Services Advisory and Compliance 45,571 36,855 Disputes, Forensics and Legal Technology 82,600 80,244 Total revenues $ 264,520 $ 257,837 Segment operating profit: Healthcare $ 20,390 $ 28,472 Energy 10,728 8,879 Financial Services Advisory and Compliance 16,031 11,614 Disputes, Forensics and Legal Technology 27,908 25,480 Total segment operating profit 75,057 74,445 Segment reconciliation to income before income tax expense: Reconciling items: General and administrative expenses 44,362 41,484 Depreciation expense 6,845 7,473 Amortization expense 1,856 2,319 Other operating costs, net 983 1,306 Long-term compensation expense attributable to client-service employees (including share-based compensation expense) 2,584 3,286 Operating income 18,427 18,577 Interest and other expense, net 1,587 821 Income before income tax expense $ 16,840 $ 17,756
Total Assets by Segment	March 31, December 31, 2018 2017 Healthcare $ 416,227 $ 419,894 Energy 120,711 115,478 Financial Services Advisory and Compliance 102,775 95,534 Disputes, Forensics and Legal Technology 334,924 321,844 Unallocated assets 123,700 127,514 Total assets $ 1,098,337 $ 1,080,264

Goodwill And Intangible Asset20

Goodwill And Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Change in Carrying Values of Goodwill Assets by Segment	Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics and Legal Technology Total Company Gross goodwill at December 31, 2017 $ 278,130 $ 80,109 $ 54,462 $ 352,056 $ 764,757 Segment reclassification 15,934 - - (15,934 ) - Gross goodwill at December 31, 2017 adjusted $ 294,064 $ 80,109 $ 54,462 $ 336,122 $ 764,757 Adjustments (50 ) 200 (6 ) (26 ) 118 Foreign currency translation (50 ) 274 319 1,005 1,548 Gross goodwill at March 31, 2018 293,964 80,583 54,775 337,101 766,423 Accumulated goodwill impairment - - - (122,045 ) (122,045 ) Accumulated amortization - - - (5,425 ) (5,425 ) Net goodwill at March 31, 2018 $ 293,964 $ 80,583 $ 54,775 $ 209,631 $ 638,953 Healthcare Energy Financial Services Advisory and Compliance Disputes, Forensics and Legal Technology Total Company Gross goodwill at December 31, 2016 $ 272,032 $ 77,924 $ 53,784 $ 348,757 $ 752,497 Segment reclassification 15,934 - - (15,934 ) - Gross goodwill at December 31, 2016 adjusted $ 287,966 $ 77,924 $ 53,784 $ 332,823 $ 752,497 Acquisitions 5,837 - - - 5,837 Adjustments 9 1,231 (35 ) (154 ) 1,051 Foreign currency translation 252 954 713 3,453 5,372 Gross goodwill at December 31, 2017 adjusted 294,064 80,109 54,462 336,122 764,757 Accumulated goodwill impairment - - - (122,045 ) (122,045 ) Accumulated amortization - - - (5,425 ) (5,425 ) Net goodwill at December 31, 2017 $ 294,064 $ 80,109 $ 54,462 $ 208,652 $ 637,287
Schedule of Finite-Lived Intangible Assets by Major Category	March 31, December 31, 2018 2017 Intangible assets: Customer lists and relationships $ 110,387 $ 109,624 Non-compete agreements 24,292 24,217 Other 28,904 28,985 Intangible assets, at cost 163,583 162,826 Less: accumulated amortization (144,336 ) (141,773 ) Intangible assets, net $ 19,247 $ 21,053
Schedule of Intangible Assets Categories	Category Weighted Average Remaining Years Amount Customer lists and relationships, net 4.6 $ 16,497 Non-compete agreements, net 2.9 1,797 Other intangible assets, net 2.8 953 Total intangible assets, net 4.3 $ 19,247
Schedule of Amortization Expense	Year Ending December 31, Amount 2018 (includes January - March) $ 6,773 2019 4,621 2020 3,555 2021 3,705 2022 683 2023 1,081

Net Income Per Share (EPS) (Tab

Net Income Per Share (EPS) (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	For the three months ended March 31, 2018 2017 Basic shares 45,120 46,932 Employee stock options 153 247 Restricted stock units 1,544 1,677 Contingently issuable shares 17 113 Diluted shares 46,834 48,969 Antidilutive shares (1) 33 3 ( 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.

Share-Based Compensation Expe22

Share-Based Compensation Expense (Tables)	3 Months Ended
	Mar. 31, 2018
Share Based Compensation [Abstract]
Schedule of Share-Based Compensation Expense Showing Amount Attributable to Each Category	For the three months ended March 31, 2018 2017 Amortization of restricted stock unit awards $ 3,206 $ 2,656 Amortization of stock option awards 34 219 Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan 137 147 Total share-based compensation expense $ 3,377 $ 3,022
Schedule of Total Share-Based Compensation Expense	For the three months ended March 31, 2018 2017 Cost of services before reimbursable expenses $ 1,228 $ 1,617 General and administrative expenses 2,149 1,405 Total share-based compensation expense $ 3,377 $ 3,022

Supplemental Consolidated Bal23

Supplemental Consolidated Balance Sheet Information (Tables)	3 Months Ended
	Mar. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Components of Accounts Receivable, Net and Contract Asset	March 31, December 31, 2018 2017 Billed amounts $ 200,785 $ 194,694 Engagements in process 119,537 102,026 Allowance for uncollectible billed amounts (19,474 ) (18,274 ) Allowance for uncollectible engagements in process (12,104 ) (10,605 ) Accounts receivable, net and contract assets $ 288,744 $ 267,841
Components of Prepaid Expenses and Other Current Assets	March 31, December 31, 2018 2017 Notes receivable - current $ 2,671 $ 3,047 Prepaid recruiting and retention incentives - current 9,546 8,705 Other prepaid expenses and other current assets 21,399 21,169 Prepaid expenses and other current assets $ 33,616 $ 32,921
Components of Other Assets	March 31, December 31, 2018 2017 Notes receivable - non-current $ 5,665 $ 6,260 Capitalized client-facing assets 1,153 1,803 Prepaid recruiting and retention incentives - non-current 9,860 8,611 Prepaid expenses and other non-current assets 6,532 6,870 Other assets $ 23,210 $ 23,544
Property and Equipment, Net	March 31, December 31, 2018 2017 Furniture, fixtures and equipment $ 74,515 $ 72,776 Software 95,013 93,883 Leasehold improvements 60,509 57,689 Property and equipment, at cost 230,037 224,348 Less: accumulated depreciation and amortization (142,116 ) (135,179 ) Property and equipment, net $ 87,921 $ 89,169
Components of Other Current Liabilities	March 31, December 31, 2018 2017 Deferred acquisition liabilities - current $ 3,698 $ 3,897 Contract liabilities 22,368 27,979 Deferred rent - current 3,450 3,341 Other current liabilities 3,117 3,678 Total other current liabilities $ 32,633 $ 38,895
Components of Other Non-Current Liabilities	March 31, December 31, 2018 2017 Deferred acquisition liabilities - non-current $ 1,945 $ 1,972 Deferred rent - non-current 28,506 28,534 Other non-current liabilities 1,549 1,668 Total other non-current liabilities $ 32,000 $ 32,174

Accumulated Other Comprehensi24

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income Loss [Abstract]
Summary of Activity in Accumulated Other Comprehensive Loss	The activity in accumulated other comprehensive loss was as follows (in thousands): For the three months ended March 31, 2018 2017 Unrealized loss on foreign exchange: Balance at beginning of period $ (19,308 ) $ (25,166 ) Unrealized gain on foreign exchange 1,369 830 Balance at end of period $ (17,939 ) $ (24,336 ) Unrealized loss on derivatives: Balance at beginning of period $ 130 $ (40 ) Unrealized gain on derivatives in period, net of reclassification 250 11 Reclassified to interest expense 10 34 Income tax expense (3 ) (14 ) Balance at end of period $ 387 $ (9 ) 2018 2017 Accumulated other comprehensive loss at March 31, (17,552 ) (24,345 )

Derivatives And Hedging Activ25

Derivatives And Hedging Activity (Tables)	3 Months Ended
	Mar. 31, 2018
Interest Rate Derivatives [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 1.78% $ 17.5

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Changes in Deferred Contingent Consideration Liabilities	For the three months ended March 31, 2018 2017 Beginning Balance $ 3,870 $ 1,723 Accretion of acquisition-related contingent consideration 59 49 Remeasurement of acquisition-related contingent consideration - 1,199 Payments (204 ) - Ending Balance $ 3,725 $ 2,971
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 March 31, 2018 Interest rate derivatives, net $ - $ (535 ) $ - $ (535 ) Deferred contingent acquisition liabilities $ - $ - $ 3,725 $ 3,725 At December 31, 2017 Interest rate derivatives, net $ - $ (213 ) $ - $ (213 ) Deferred contingent acquisition liabilities $ - $ - $ 3,870 $ 3,870

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Revenue Recognition [Line Items]
Contract liabilities	$ 22,368	$ 27,979
Remaining performance obligations expected to be satisfied beyond one year	$ 38,400
Contract termination notice days with no penalty	30 days
Effect of Adoption of Topic 606 [Member]
Revenue Recognition [Line Items]
Net increase to opening retained earnings, net of tax	$ 200
Contract liabilities	22,400	$ 28,000
Amount of contract liability, revenue recognized	16,000
Effect of Adoption of Topic 606 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606
Revenue Recognition [Line Items]
Estimated variable consideration that have not recognized in prior revenue recognition guidance	$ 2,800

Segment Information (Narrative)

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2018Segment
Segment Reporting Measurement Disclosures [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
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Total revenues before reimbursements	$ 243,879	$ 236,211
Total revenues	264,520	257,837
Total segment operating profit	75,057	74,445
General and administrative expenses	44,362	41,484
Depreciation expense	6,845	7,473
Amortization expense	1,856	2,319
Other operating costs, net	983	1,306
Long-term compensation expense attributable to client-service employees (including share-based compensation expense)	2,584	3,286
Operating income	18,427	18,577
Interest and other expense, net	1,587	821
Income before income tax expense	16,840	17,756
Healthcare [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	90,149	94,010
Total revenues	98,712	103,016
Total segment operating profit	20,390	28,472
Energy [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	33,704	32,498
Total revenues	37,637	37,722
Total segment operating profit	10,728	8,879
Financial Services Advisory and Compliance [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	41,386	32,907
Total revenues	45,571	36,855
Total segment operating profit	16,031	11,614
Disputes, Forensics and Legal Technology [Member]
Segment Reporting Information [Line Items]
Total revenues before reimbursements	78,640	76,796
Total revenues	82,600	80,244
Total segment operating profit	$ 27,908	$ 25,480

Segment Information (Total Asse

Segment Information (Total Assets by Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,098,337	$ 1,080,264
Healthcare [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	416,227	419,894
Energy [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	120,711	115,478
Financial Services Advisory and Compliance [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	102,775	95,534
Disputes, Forensics and Legal Technology [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	334,924	321,844
Unallocated Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 123,700	$ 127,514

Goodwill and Intangible Asset31

Goodwill and Intangible Assets, Net (Schedule of Change in Carrying Values of Goodwill Assets by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Gross goodwill, beginning balance	$ 764,757	$ 752,497
Acquisitions		5,837
Adjustments	118	1,051
Foreign currency translation	1,548	5,372
Gross goodwill, ending balance	766,423	764,757
Accumulated goodwill impairment	(122,045)	(122,045)
Accumulated amortization	(5,425)	(5,425)
Net goodwill	638,953	637,287
Scenario, Previously Reported [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	764,757	752,497
Gross goodwill, ending balance		764,757
Healthcare [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	294,064	287,966
Acquisitions		5,837
Adjustments	(50)	9
Foreign currency translation	(50)	252
Gross goodwill, ending balance	293,964	294,064
Net goodwill	293,964	294,064
Healthcare [Member] | Scenario, Previously Reported [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	278,130	272,032
Gross goodwill, ending balance		278,130
Healthcare [Member] | Segment Reclassification [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	15,934	15,934
Gross goodwill, ending balance		15,934
Energy [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	80,109	77,924
Adjustments	200	1,231
Foreign currency translation	274	954
Gross goodwill, ending balance	80,583	80,109
Net goodwill	80,583	80,109
Energy [Member] | Scenario, Previously Reported [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	80,109	77,924
Gross goodwill, ending balance		80,109
Financial Services Advisory and Compliance [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	54,462	53,784
Adjustments	(6)	(35)
Foreign currency translation	319	713
Gross goodwill, ending balance	54,775	54,462
Net goodwill	54,775	54,462
Financial Services Advisory and Compliance [Member] | Scenario, Previously Reported [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	54,462	53,784
Gross goodwill, ending balance		54,462
Disputes, Forensics and Legal Technology [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	336,122	332,823
Adjustments	(26)	(154)
Foreign currency translation	1,005	3,453
Gross goodwill, ending balance	337,101	336,122
Accumulated goodwill impairment	(122,045)	(122,045)
Accumulated amortization	(5,425)	(5,425)
Net goodwill	209,631	208,652
Disputes, Forensics and Legal Technology [Member] | Scenario, Previously Reported [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	352,056	348,757
Gross goodwill, ending balance		352,056
Disputes, Forensics and Legal Technology [Member] | Segment Reclassification [Member]
Goodwill [Line Items]
Gross goodwill, beginning balance	$ (15,934)	(15,934)
Gross goodwill, ending balance		$ (15,934)

Goodwill and Intangible Asset32

Goodwill and Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	May 31, 2017
Goodwill [Line Items]
Amortization expense	$ 1,856	$ 2,319
Maximum [Member]
Goodwill [Line Items]
Estimated remaining useful lives	7 years
Healthcare [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value			30.00%
Energy [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value			38.00%
Financial Services Advisory and Compliance [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value			70.00%
Disputes, Forensics and Legal Technology [Member]
Goodwill [Line Items]
Percentage of fair value of reporting unit in excess of carrying value			21.00%

Goodwill and Intangible Asset33

Goodwill and Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets by Major Category) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Customer lists and relationships	$ 110,387	$ 109,624
Non-compete agreements	24,292	24,217
Other	28,904	28,985
Intangible assets, at cost	163,583	162,826
Less: accumulated amortization	(144,336)	(141,773)
Intangible assets, net	$ 19,247	$ 21,053

Goodwill and Intangible Asset34

Goodwill and Intangible Assets, Net (Schedule of Intangible Assets Categories) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	4 years 3 months 18 days
Amount	$ 19,247	$ 21,053
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	4 years 7 months 6 days
Amount	$ 16,497
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	2 years 10 months 24 days
Amount	$ 1,797
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	2 years 9 months 18 days
Amount	$ 953

Goodwill and Intangible Asset35

Goodwill and Intangible Assets, Net (Schedule of Amortization Expense) (Details) $ in Thousands	Mar. 31, 2018USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2018 (includes January - March)	$ 6,773
2,019	4,621
2,020	3,555
2,021	3,705
2,022	683
2,023	$ 1,081

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
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Basic shares	45,120	46,932
Contingently issuable shares	17	113
Diluted shares	46,834	48,969
Antidilutive shares	33	3
Employee Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards	153	247
Restricted Stock Units [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based awards	1,544	1,677

Share-Based Compensation Expe37

Share-Based Compensation Expense (Schedule of Share-Based Compensation Expense Showing Amount Attributable to Each Category) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share Based Compensation [Abstract]
Amortization of restricted stock unit awards	$ 3,206	$ 2,656
Amortization of stock option awards	34	219
Discount given on employee stock purchase transactions through our Employee Stock Purchase Plan	137	147
Total share-based compensation expense	$ 3,377	$ 3,022

Share-Based Compensation Expe38

Share-Based Compensation Expense (Schedule of Total Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 3,377	$ 3,022
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	1,228	1,617
General And Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	$ 2,149	$ 1,405

Share-Based Compensation Expe39

Share-Based Compensation Expense (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation costs related to the outstanding or unvested stock-based compensation awards	$ 12.8
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	212,646
Aggregate fair value of share-based awards granted	$ 4.3

Supplemental Consolidated Bal40

Supplemental Consolidated Balance Sheet Information (Components of Accounts Receivable, Net and Contract Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Billed amounts	$ 200,785	$ 194,694
Engagements in process	119,537	102,026
Allowance for uncollectible billed amounts	(19,474)	(18,274)
Allowance for uncollectible engagements in process	(12,104)	(10,605)
Accounts receivable, net and contract assets	$ 288,744	$ 267,841

Supplemental Consolidated Bal41

Supplemental Consolidated Balance Sheet Information (Components of Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Notes receivable - current	$ 2,671	$ 3,047
Prepaid recruiting and retention incentives - current	9,546	8,705
Other prepaid expenses and other current assets	21,399	21,169
Prepaid expenses and other current assets	$ 33,616	$ 32,921

Supplemental Consolidated Bal42

Supplemental Consolidated Balance Sheet Information (Components of Other Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Notes receivable - non-current	$ 5,665	$ 6,260
Capitalized client-facing assets	1,153	1,803
Prepaid recruiting and retention incentives - non-current	9,860	8,611
Prepaid expenses and other non-current assets	6,532	6,870
Other assets	$ 23,210	$ 23,544

Supplemental Consolidated Bal43

Supplemental Consolidated Balance Sheet Information (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental Consolidated Balance Sheet Information [Line Items]
Employee retention and signing bonuses, term, years	3 years
Sign-on and retention bonuses issued	$ 5,100	$ 2,700
Purchases of property and equipment	5,750	$ 13,789
Performance-based long-term incentive compensation liabilities	$ 500
Restricted Stock Units [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Vesting period	3 years
Maximum [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Lease expiration	Dec. 31, 2028
Leasehold Improvements [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment	$ 3,100
Technology Infrastructure and Software [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment	2,100
Furniture and Other Equipment [Member]
Supplemental Consolidated Balance Sheet Information [Line Items]
Purchases of property and equipment	$ 600

Supplemental Consolidated Bal44

Supplemental Consolidated Balance Sheet Information (Property and Equipment, Net) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 230,037	$ 224,348
Less: accumulated depreciation and amortization	(142,116)	(135,179)
Property and equipment, net	87,921	89,169
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	74,515	72,776
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	95,013	93,883
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 60,509	$ 57,689

Supplemental Consolidated Bal45

Supplemental Consolidated Balance Sheet Information (Components of Other Current Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Deferred acquisition liabilities - current	$ 3,698	$ 3,897
Contract liabilities	22,368	27,979
Deferred rent - current	3,450	3,341
Other current liabilities	3,117	3,678
Total other current liabilities	$ 32,633	$ 38,895

Supplemental Consolidated Bal46

Supplemental Consolidated Balance Sheet Information (Components of Other Non-Current Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Deferred acquisition liabilities - non-current	$ 1,945	$ 1,972
Deferred rent - non-current	28,506	28,534
Other non-current liabilities	1,549	1,668
Total other non-current liabilities	$ 32,000	$ 32,174

Accumulated Other Comprehensi47

Accumulated Other Comprehensive Loss (Summary of Activity in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 687,334
Balance	692,706
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(19,308)	$ (25,166)
Unrealized gain	1,369	830
Balance	(17,939)	(24,336)
Accumulated Net Loss from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	130	(40)
Unrealized gain	250	11
Reclassified to interest expense	10	34
Income tax expense	(3)	(14)
Balance	387	(9)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(19,178)
Balance	$ (17,552)	$ (24,345)

Derivatives and Hedging Activ48

Derivatives and Hedging Activity (Schedule of Interest Rate Derivatives) (Details)	3 Months Ended
	Mar. 31, 2018USD ($)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 | $	$ 5,000,000
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 | $	$ 15,000,000
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	1.78%
Total Notional Amount | $	$ 17,500,000

Derivatives and Hedging Activ49

Derivatives and Hedging Activity (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivative [Line Items]
Ineffectiveness related to the interest rate derivatives	$ 0
Interest expense	1,316,000	$ 1,069,000
Interest Rate Derivatives [Member]
Derivative [Line Items]
Interest expense	$ 0	$ 0

Bank Debt (Narrative) (Details)

Bank Debt (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Line of Credit Facility [Line Items]
Revolving credit facility	$ 400,000,000
Maturity date of bank borrowings	Mar. 28, 2022
Maximum borrowing capacity	$ 500,000,000
Aggregate bank borrowings	184,327,000		$ 132,944,000
Additional bank borrowings	$ 211,700,000
Credit agreement, average borrowing rate	3.00%	2.70%
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%	0.00%
Base Rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt facility, applicable margin	1.00%
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Additional bank borrowings	$ 3,900,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Consolidated leverage ratio	350.00%
Consolidated interest coverage ratio	2360.00%
Consolidated leverage ratio	130.00%
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Consolidated interest coverage ratio	200.00%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. corporate income tax rate	21.00%	35.00%
Increase in effective tax rate as a result of global intangible low-taxed income provision	0.70%
Effective tax rate on excess returns earned directly from foreign services	13.125%
Decrease in effective tax rate as a result of foreign derived intangible income provision	2.70%
Increase in effective tax rate due to adjustments to provisional amounts	0.70%

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Fair Value Disclosures [Abstract]
Remeasurement of acquisition-related contingent consideration	$ 1,199

Fair Value (Changes in Deferred

Fair Value (Changes in Deferred Contingent Consideration Liabilities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance	$ 3,870	$ 1,723
Accretion of acquisition-related contingent consideration	59	49
Remeasurement of acquisition-related contingent consideration		1,199
Ending Balance	3,725	$ 2,971
Other Acquisitions [Member]
Business Acquisition, Contingent Consideration [Line Items]
Payments	$ (204)

Fair Value (Schedule of Assets

Fair Value (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred contingent acquisition liabilities	$ 3,725	$ 3,870	$ 2,971	$ 1,723
Fair Value on a Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate derivatives, net	(535)	(213)
Deferred contingent acquisition liabilities	3,725	3,870
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	(535)	(213)
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	$ 3,725	$ 3,870