Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Accounts Payable and Accrued Expenses
Accounts payable, trade	$ 227	$ 221
Accrued payroll, vacation and other employee expenses	216	56
Unrecognized income from research and development tax credits	35	35
Other accrued expenses	224	348
Total accounts payable and accrued expenses	$ 702	$ 660