Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 36,975	$ 10,400
Operating lease liability	37,235	$ 10,400
Operating lease cost	16,000
Operating lease liability current	$ 12,666
Weighted average remaining lease term	3 years 8 months 12 days
Weighted average discount rate	5.40%