Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Accounts Payable and Accrued Expenses
Accounts payable, trade	$ 454	$ 294
Lease liability, short-term portion	235	225
Dividends payable, short-term portion	46	53
Unrecognized income from research and development tax credits	26	35
Accrued compensation	43	29
Other accrued expenses	94	167
Total accounts payable and accrued expenses	$ 898	$ 803