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Segment Information and Major Customers - Revenue Information by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from External Customer [Line Items]
Revenue	$ 154,158	$ 138,081	$ 143,232	$ 127,533	$ 130,129	$ 133,143	$ 128,715	$ 114,523	$ 563,004	$ 506,510	$ 530,061
United States [Member]
Revenue from External Customer [Line Items]
Revenue									374,600	352,079	300,853
Germany [Member]
Revenue from External Customer [Line Items]
Revenue									65,229	74,882	78,062
United Kingdom [Member]
Revenue from External Customer [Line Items]
Revenue									56,355	13,799	2,569
Mexico [Member]
Revenue from External Customer [Line Items]
Revenue									4,616	4,087	90,795
Other International [Member]
Revenue from External Customer [Line Items]
Revenue									$ 62,204	$ 61,663	$ 57,782

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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