Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Other Liabilities Disclosure [Abstract]
Other long-term liabilities-capital leases	$ 48	$ 32
Derivative liabilities—noncurrent	2,029	1,612
Cumulative preferred dividends, undeclared and unpaid—noncurrent	687	618
Deferred income taxes	1,667	1,795
Other long-term liabilities	$ 4,431	$ 4,057