Leases - Schedule of Future Minimum Lease Payments Under Non-cancelable Leases (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Operating Lease
Remainder of 2019	$ 6,008,000
2020	21,144,000
2021	17,812,000
2022	14,470,000
2023	8,984,000
After 2023	25,486,000
Total lease payments	93,904,000
Less: Interest	(10,384,000)
Present value of lease liabilities	83,520,000
Finance Lease
Remainder of 2019	310,000
2020	1,150,000
2021	432,000
Total lease payments	1,892,000
Less: Interest	(79,000)
Present value of lease liabilities	1,813,000	$ 2,920,000
Total
Remainder of 2019	6,318,000
2020	22,294,000
2021	18,244,000
2022	14,470,000
2023	8,984,000
After 2023	25,486,000
Total lease payments	95,796,000
Less: Interest	(10,463,000)
Present value of lease liabilities	$ 85,333,000