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Stock-Based Compensation - Restricted Stock Units (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Nonvested deferred share activity
Nonvested shares at June 30, 2022	1,774,949
Shares cancelled	(329,489)
Nonvested shares at June 30, 2023	2,187,560	1,774,949
Weighted average grant date fair value per share at June 30, 2022	$ 10.66
Weighted average grant date fair value per share granted	11.11
Weighted average grant date fair value per share vested and released	9.40
Weighted average grant date fair value per share cancelled	11.61
Weighted average grant date fair value per share at June 30, 2023	$ 10.90	$ 10.66
Share based compensation arrangement by share based payment award deferred cancellations in period.		214,017	242,743
Share Based Compensation Arrangement By Share Based Payment Award Deferred Shares Cancelled Weighted Average Grant Date Fair Value		$ 21.89	$ 25.50
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 3.0	$ 1.5	$ 2.6
Restricted Stock or Unit Expense	$ 5.0	$ 1.3	$ 0.6
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	329,489
Cash Performance Awards
Nonvested deferred share activity
Shares granted	360,030	251,575	231,219
Shares vested and released	(165,109)	(106,637)
Shares cancelled		(13,621)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	360,030	251,575	231,219
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	165,109	106,637
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 1.4	$ 1.1
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		13,621
Restricted Stock Award, Forfeitures		$ 0.1
Share Based Performance Awards
Nonvested deferred share activity
Shares granted	1,039,126
Shares vested and released	(297,026)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	1,039,126
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	297,026

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