Commitments - Cash flow information (Details) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Feb. 28, 2021	Mar. 31, 2021	Mar. 31, 2020
Lease cash flow
Operating cash flows from operating leases.		$ 1,405	$ 1,439
ROU assets obtained in exchange for new operating lease liabilities	$ 2,300	$ 2,275	$ 4,317
Weighted-average
Weighted-average remaining lease term		10 years	9 years
Weighted-average discount rate		8.50%	7.90%