Fair Value Measurements - Fair Value of Gross Position of Derivative Contracts in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accrued liabilities
Derivatives, Fair Value [Line Items]
Net amounts presented	$ (7,543)	$ (8,591)
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Net amounts presented	(3,812)	(5,655)
Designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Gross amounts recognized	(11,211)	(13,238)
Gross amounts offset	0	0
Net amounts	(11,211)	(13,238)
Not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Gross amounts recognized	(214)	(1,156)
Gross amounts offset	70	148
Net amounts	$ (144)	$ (1,008)

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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