Accounts Receivable - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Amount billed but not received under retainage provisions in contracts	$ 1,800	$ 1,500
Retainage receivables on contracts minimum period		1 year
Retainage receivables on contracts maximum period		2 years
Provision for doubtful accounts	688	$ 928	$ 295
Charge-offs	$ 300	$ 400	$ 600