Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (39,050)
Ending balance	(43,245)	$ (42,040)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(38,599)	(46,604)
Current period other comprehensive income (loss)	(4,349)	4,732
Ending balance	(42,948)	(41,872)
Cash Flow Hedging Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(451)	636
Current period other comprehensive income (loss)	568	(479)
Reclassification adjustment	(414)	(325)
Ending balance	$ (297)	$ (168)

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.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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