Operating Leases - Summary of Components of Lease Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lease Cost [Abstract]
Operating lease cost	$ 2,238	$ 2,215
Short-term lease cost	148	537
Variable lease cost	376	396
Lease, Cost	$ 2,762	$ 3,148