Leases - Schedule of Maturity Analysis of Lease Liability by Lease Classification (Detail) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating Leases
2020	$ 3,735
2021	14,344
2022	13,277
2023	9,244
2024	8,073
Thereafter	57,791
Total undiscounted lease payments	106,464
Amounts representing interest	(17,912)
Lease liability	88,552	$ 99,500
Finance Leases
2020	346
2021	1,394
2022	1,412
2023	1,438
2024	1,444
Thereafter	8,442
Total undiscounted lease payments	14,476
Amounts representing interest	(2,414)
Lease liability	$ 12,062	$ 7,406