Supplemental Consolidated Financial Information - Supplemental of Consolidated Statements of Cash Flows Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021
Supplemental disclosure of cash flow information
Cash and cash equivalents	$ 237,974	$ 222,342	$ 206,028
Restricted cash	8,549	8,614
Total cash and cash equivalents and restricted cash	246,523	230,956	$ 214,369	$ 263,624
Non-cash investing and financing activities:
Pawn loans forfeited and transferred to inventory	238,899	204,662
Transfer of consideration for other investment	0	1,500
Transfer of equity consideration for acquisition	99	0
Acquisition earn-out contingency	2,000	$ 0
Accrued acquisition consideration	$ 1,220