Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Trade receivables	$ 41,647	$ 71,150
Other receivables	8,211	8,503
Accounts receivable, gross	49,858	79,653
Allowance for doubtful accounts	(863)	(2,867)
Accounts receivable, net	$ 48,995	$ 76,786