Accounts Receivable and Allowance for Credit Losses - Schedule of Allowance for Credit Losses (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Allowance For Credit Loss [Abstract]
Allowance for credit losses, January 1, 2020	$ 615
Provision for expected credit losses	401
Write-offs charged against allowance	(163)
Foreign currency translation adjustment	34
Allowance for credit losses, December 31, 2020	887
Accounts receivable balance before allowance for credit losses and provision for sales returns, December 31, 2020	$ 31,571