Debt (Long-term debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023
Total debt:
Long-term Debt, Gross	$ 708,283	$ 708,283
Unamortized debt discount and issuance costs	(12,558)	(13,206)
Total Amount Outstanding	695,725	695,077
Senior Secured Notes Due 2028
Total debt:
Long-term Debt, Gross	404,950	404,950
Term B Loan
Total debt:
Long-term Debt, Gross	$ 303,333	$ 303,333