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Revenue from Contracts with Customers - Summary of Revenue from External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Total	$ 59,755	$ 49,775
United States [Member]
Revenue from External Customer [Line Items]
Total	58,347	47,942
Canada [Member]
Revenue from External Customer [Line Items]
Total	1,019	1,264
India and other [Member]
Revenue from External Customer [Line Items]
Total	$ 389	$ 569

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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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