Nature of Business and Summary of Significant Accounting Policies - Summary of Company's Customers And Suppliers (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts payable and accrued liabilities	$ 52,995	$ 53,993
Customer Concentration Risk | Revenue | Customer A
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage	33.00%	34.00%	31.00%
Customer Concentration Risk | Revenue | Customer B
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage	34.00%	33.00%	32.00%
Customer Concentration Risk | Revenue | Customer C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk percentage	27.00%	27.00%	28.00%
Customer Concentration Risk | Accounts Receivable | Supplier A
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts payable and accrued liabilities	$ 17,429	$ 8,142	$ 8,310
Customer Concentration Risk | Accounts Receivable | Supplier B
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts payable and accrued liabilities	3,756	1,755	$ 3,833
Customer Concentration Risk | Accounts Receivable | Supplier C
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts payable and accrued liabilities	$ 2,603	$ 11,218