Leases - Summary of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 2,673	$ 2,397
Variable lease cost	297	421
Short-term lease cost	218	107
Total lease cost	$ 3,188	$ 2,925