Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating leases expense	$ 1,003	$ 2,016
Amortization of ROU assets	5	11
Interest on lease liabilities	1	3
Total finance lease expense	6	14
Variable lease costs	69	137
Short term lease expense	36	50
Total lease expense	$ 1,114	$ 2,217