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Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis at Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Mutual fund assets | $ 20,787 | $ 20,910
Derivative assets: |  |
Foreign currency contracts | 582 | 112
Total assets at fair value | 21,369 | 21,022
Derivative liabilities: |  |
Foreign currency contracts | 95 | 305
Interest rate contracts | 81 | 53
Total liabilities at fair value | 176 | 358
Level 1 [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Mutual fund assets | 20,787 | 20,910
Derivative assets: |  |
Total assets at fair value | 20,787 | 20,910
Level 2 [Member] |  |
Derivative assets: |  |
Foreign currency contracts | 582 | 112
Total assets at fair value | 582 | 112
Derivative liabilities: |  |
Foreign currency contracts | 95 | 305
Interest rate contracts | 81 | 53
Total liabilities at fair value | $ 176 | $ 358

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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- Definition Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959 + Details
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