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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 2,819	$ 3,812	$ 3,877
Additions based on tax position related to current year	661	221	1,758
Additions based on tax position related to prior year	352	423
Additions based on tax position related to prior year			(105)
Reductions from settlements and statute of limitation expiration		(1,469)	(2,247)
Effect of foreign currency translation	(37)	(168)	529
Balance at end of year	$ 3,795	$ 2,819	$ 3,812

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Amount of unrecognized tax benefits.

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