Leases - Schedule of Maturities of Lease Liabilities (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Operating leases
2019	$ 2,532
2020	2,477
2021	2,061
2022	1,452
2023	1,359
Thereafter	6,034
Total minimum lease payments	15,915
Less imputed interest	(2,641)
Lease liability	13,274
Finance leases
2019	632
2020	855
2021	872
2022	889
2023	907
Thereafter	6,409
Total minimum lease payments	10,564
Less imputed interest	(2,346)
Lease liability	$ 8,218