Leases - Summary of Components of Lease Expense, Supplemental Cash Flow Information Related to Leases and Other Lease-related Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Components of lease expense:
Operating lease cost	$ 7,611	$ 7,270
Short-term lease cost	4,372	2,665
Other cost	75	64
Total lease cost	12,058	9,999
Supplemental cash flow information related to leases:
Operating cash flows from operating leases	7,782	7,677
Operating cash flows from finance leases	15	16
Financing cash flows from finance leases	45	61
Cash paid for amounts included in the measurement of lease liabilities	7,842	7,754
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 17,064	$ 5,967
Other lease-related information:
Weighted-average remaining lease term - operating leases (in years)	4 years 3 months 18 days	4 years 7 months 6 days
Weighted-average remaining lease term - finance leases (in years)	4 years 1 month 6 days	3 years 9 months 18 days
Weighted-average discount rate - operating leases	8.26%	8.70%
Weighted-average discount rate - finance leases	8.65%	8.94%