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Commitments - Cash flow information (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lease cash flow    
Operating cash flows from operating leases. $ 809 $ 966
Weighted-average    
Weighted-average remaining lease term 8 years 9 years
Weighted-average discount rate 8.00% 7.50%