Operating leases, Quantitative Data (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating lease amounts [Abstract]
Right-of-use assets	$ 1,980	$ 1,887
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid expenses and other assets	Prepaid expenses and other assets
Lease liabilities	$ 2,040	$ 1,921
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities and Other Liabilities	Accrued Liabilities and Other Liabilities
Other information [Abstract]
Operating outgoing cash flows from operating leases	$ 352	$ 339
Right-of-use assets obtained in exchange for new operating lease liabilities	415	625
Lease costs [Abstract]
Operating lease cost	322	321
Variable lease cost	$ 44	$ 40