Leases - Schedule of Lease Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Lease Cost
Total lease costs	$ 3,853	$ 3,990	$ 7,433	$ 7,942
Operating Expenses
Lease Cost
Operating	2,978	3,233	5,726	6,418
Amortization	759	605	1,466	1,211
Interest expense	$ 116	$ 152	$ 241	$ 313