Debt (Long-term debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Total debt:
Long-term Debt, Gross	$ 708,283	$ 859,215	$ 1,253,333
Unamortized debt discount and issuance costs	(13,854)	(20,307)	(27,973)
Total Amount Outstanding	694,429	838,908	1,225,360
Senior Secured Notes Due 2028
Total debt:
Long-term Debt, Gross	404,950	405,882	800,000
Term B Loan
Total debt:
Long-term Debt, Gross	$ 303,333	$ 453,333	$ 453,333