Strategic Investments - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Schedule of Equity Method Investments [Line Items]
Dividends from unconsolidated affiliates		$ 0	$ 0	$ 3,366,000
Equity in income (loss) from investment in unconsolidated affiliates		4,711,000	(28,459,000)	1,779,000
Goodwill impairment loss		$ 0	0	0	$ 41,300,000
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		$ 3,500,000	3,600,000	3,400,000
Equity in income (loss) from investment in unconsolidated affiliates		5,000,000.0	(28,500,000)	2,900,000
Goodwill impairment loss		32,400,000
Retained earnings		(14,700,000)
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		15,000,000	$ 15,000,000
Equity securities, carrying value		$ 45,000,000