Leases - Operating Lease Right of Use Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Cash paid for operating lease liabilities	$ 734	$ 501	$ 1,463	$ 997
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 0	$ 0	$ 9,181