Leases - Schedule of Reconciles the Undiscounted Cash Flows for Direct Financing Lease Liabilities and Operating Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Finance Lease Liability And Operating Lease Liability Maturity [Abstract]
2019	$ 1,068
2020	4,130
2021	3,630
2022	2,967
2023	2,847
Thereafter	15,856
Total lease payments	30,498
Less: amount representing interest	(7,147)
Operating lease liabilities	23,351
2019	366
2020	1,446
2021	1,288
2022	1,022
2023	846
Thereafter	3,199
Total lease payments	8,167
Less: amount representing interest	(3,832)
Present value of lease payments	$ 4,335