Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 1,038
Operating cash flows from finance leases	1,174
Financing cash flows from finance leases	6,047	$ 5,885
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	1,219
Finance leases	$ 296