Strategic Investments - Additional Information (Details) - USD ($)		12 Months Ended
	Nov. 12, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Equity in income (loss) from investment in unconsolidated affiliates		$ 6,150,000	$ 4,711,000	$ (28,459,000)
Goodwill impairment loss		0	0	0
Payments to acquire notes receivable		$ 5,895,000		15,500,000
Cash Converters International Limited
Schedule of Equity Method Investments [Line Items]
Shares owned (in shares)		273,939,157
Ownership percentage		43.70%
Dividends from unconsolidated affiliates		$ 3,600,000	3,500,000	3,600,000
Equity in income (loss) from investment in unconsolidated affiliates		6,900,000	5,000,000.0	(28,500,000)
Goodwill impairment loss				$ 32,400,000
Goodwill, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]				Impairment of other assets
Retained earnings		(11,400,000)
Cash Converters International Limited | Subsequent event
Schedule of Equity Method Investments [Line Items]
Dividends from unconsolidated affiliates	$ 1,800,000
Founders One LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity investment			15,000,000	$ 15,000,000	$ 15,000,000
Notes receivable, net		24,400,000		$ 15,000,000
Equity securities, carrying value		45,000,000	$ 45,000,000
Payments to acquire notes receivable		15,000,000
Principal amount		21,000,000
Founders One LLC | Founders One LLC
Schedule of Equity Method Investments [Line Items]
Notes payable		$ 6,000,000