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Stock-Based Compensation - 2026 CEO Restricted Stock Units (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended
	May 26, 2026	Jan. 15, 2026	Jan. 10, 2026	Sep. 30, 2026	Sep. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)				10,000
Fair value at grant date (in USD per share)				$ 30.52
IPO Awards (Tranche 1)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)				0
IPO Awards (Tranche 2)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)				0
IPO Awards (Tranche 3)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)				0
2026 Director Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based payment expense				$ 0.8	$ 0.0
Share-Based Payment Arrangement, Nonemployee \| 2026 Director Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)	22,613
Fair value at grant date (in USD per share)	$ 33.89
Chief Executive Officer \| 2026 Director Awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based payment expense				$ 0.5
Chief Executive Officer \| Share-Based Payment Arrangement, Employee \| 2026 Director RSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)			65,320
Fair value at grant date (in USD per share)			$ 17.78
Chief Executive Officer \| Share-Based Payment Arrangement, Employee \| 2026 Director RSUs \| IPO Awards (Tranche 1)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)			10,887
Chief Executive Officer \| Share-Based Payment Arrangement, Employee \| 2026 Director RSUs \| IPO Awards (Tranche 2)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)			10,887
Chief Executive Officer \| Share-Based Payment Arrangement, Employee \| 2026 Director RSUs \| IPO Awards (Tranche 3)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)			10,886
Chief Executive Officer \| Share-Based Payment Arrangement, Employee \| 2026 Director RSUs \| Tranche 4
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)			32,660
Chief Executive Officer \| Share-Based Payment Arrangement, Nonemployee \| 2026 Director RSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-based compensation grants in period (in shares)		123,574