Share-Based and Other Non-Cash Compensation - Stock-Based Compensation Expense - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Restricted Stock Awards and Restricted Stock Units and Stock Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense	$ 0.6	$ 0.6	$ 1.3	$ 1.4
Restricted Stock Awards and Stock Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total unrecognized compensation cost	$ 2.1		$ 2.1