Supplemental Consolidated Financial Information - Supplemental of Consolidated Statements of Cash Flows Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Roll Forward]
Cash and cash equivalents at beginning of period	$ 220,595	$ 206,028
Restricted cash at beginning of period	8,373	8,341
Cash and cash equivalents and restricted cash at beginning of period	228,968	214,369
Cash and cash equivalents at end of period	218,038	237,974
Restricted cash at end of period	9,204	8,549
Cash and cash equivalents and restricted cash at end of period	227,242	246,523
Non-cash investing and financing activities:
Pawn loans forfeited and transferred to inventory	276,101	238,899
Transfer of equity consideration for acquisition	0	99
Acquisition earn-out contingency	0	2,000
Accrued acquisition consideration	$ 741	$ 1,220