Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets
Mutual funds	$ 142,408	$ 162,906
Derivative financial instruments	6,030	18,298
Total	148,438	181,204
Liabilities
Derivative financial instruments	6,279	877
Fair value of earn-out consideration		920
Total	6,279	1,797
Level 1
Assets
Mutual funds	142,408	162,906
Derivative financial instruments	0	0
Total	142,408	162,906
Liabilities
Derivative financial instruments	0	0
Fair value of earn-out consideration		0
Total	0	0
Level 2
Assets
Mutual funds	0	0
Derivative financial instruments	6,030	18,298
Total	6,030	18,298
Liabilities
Derivative financial instruments	6,279	877
Fair value of earn-out consideration		0
Total	6,279	877
Fair value of convertible notes	130,510
Level 3
Assets
Mutual funds	0	0
Derivative financial instruments	0	0
Total	0	0
Liabilities
Derivative financial instruments	0	0
Fair value of earn-out consideration	0	920
Total	$ 0	$ 920

Money market and mutual fund fair value disclosure.

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- References

No definition available.

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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

+ References

No definition available.

+ 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.

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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- Definition

Fair value of obligations not classified as financial liabilities. Includes, but is not limited to, accounts payable and accrued liabilities, commitments, obligations, and other liabilities.

+ References

No definition available.

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