Leases - Maturities of Operating and Finance Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Apr. 01, 2019	Mar. 31, 2019
Operating leases
2020 (excluding the six months ended September 30, 2019)	$ 2,163
2021	4,391
2022	3,630
2023	2,252
2024	2,057
Thereafter	5,763
Total undiscounted future minimum lease payments	20,256
Less: difference between undiscounted lease payments and discounted lease liabilities	(5,446)
Total lease liabilities	14,810	$ 16,300
Finance leases
2020 (excluding the six months ended September 30, 2019)	14
2021	25
2022	17
2023	1
2024	0
Thereafter	0
Total undiscounted future minimum lease payments	57
Less: difference between undiscounted lease payments and discounted lease liabilities	(6)
Total lease liabilities	$ 51
Operating leases
2020			$ 4,143
2021			3,945
2022			3,166
2023			1,916
2024			1,770
Thereafter			4,497
Total lease payments			19,437
Finance leases
2020			27
2021			23
2022			15
2023			0
2024			0
Thereafter			0
Total lease payments			65
Less: Amounts representing interest			(8)
Present value of lease liabilities			$ 57