Business acquisition date of acquisition.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Thousands				6 Months Ended	9 Months Ended
	Sep. 01, 2016	Aug. 04, 2016	Feb. 29, 2016	Jun. 30, 2016	Sep. 30, 2016
Goodwill [Roll Forward]
Balance at December 31, 2015				$ 131,122	$ 131,122
Foreign currency translation					(1,270)
Balance at June 30, 2016					155,313
Executive Search and Leadership Consulting [Member] \| Americas [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period					4,253
Goodwill [Roll Forward]
Balance at December 31, 2015				81,626	81,626
Foreign currency translation					196
Balance at June 30, 2016					91,748
Executive Search and Leadership Consulting [Member] \| Europe [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period					15,500
Goodwill [Roll Forward]
Balance at December 31, 2015				10,745	10,745
Foreign currency translation					(1,719)
Balance at June 30, 2016					24,561
Executive Search and Leadership Consulting [Member] \| Asia Pacific [Member]
Goodwill [Roll Forward]
Balance at December 31, 2015				9,211	9,211
Foreign currency translation					488
Balance at June 30, 2016					9,699
Culture Shaping [Member]
Goodwill [Roll Forward]
Balance at December 31, 2015				$ 29,540	29,540
Foreign currency translation					(235)
Balance at June 30, 2016					29,305
Decision Strategies International [Member]
Goodwill [Line Items]
Business Acquisition, Date of Acquisition				2/29/2016
Decision Strategies International [Member] \| Executive Search and Leadership Consulting [Member] \| Americas [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period			$ 5,673		$ 5,673
JCA Group Limited [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 15,500
JCA Group Limited [Member] \| Executive Search and Leadership Consulting [Member] \| Americas [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		$ 15,500
Philosophy IB [Member]
Goodwill [Line Items]
Business Acquisition, Date of Acquisition	September 1, 2016	August 4, 2016
Philosophy IB [Member] \| Executive Search and Leadership Consulting [Member] \| Americas [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period	$ 4,253