Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Other Liabilities Disclosure [Abstract]
Other long-term liabilities-capital leases	$ 593	$ 9
Derivative liabilities—noncurrent	1,707	2,859
Multiemployer Plan Holdback Liability, Long-Term	1,629	1,170
Deferred income taxes	1,423	1,494
Other long-term liabilities	$ 5,352	$ 5,532