Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee retention credit (income) expense	$ 0	$ 0	$ 0	$ 0
Restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted and performance shares (in shares)			0
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted and performance shares (in shares)			0