Operating leases, Quantitative Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021
Operating Lease Amounts [Abstract]
Right-of-use assets	$ 2,061		$ 2,061		$ 1,887
Lease liabilities	2,118		2,118		$ 1,921
Other Information [Abstract]
Operating outgoing cash flows from operating leases	89	$ 82	263	$ 225
Right-of-use assets obtained in exchange for new operating lease liabilities			415	625
Lease Costs [Abstract]
Operating lease cost	81	81	242	241
Variable lease cost	$ 12	$ 10	$ 32	$ 30