Supplemental Consolidated Financial Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 311,130	$ 157,567	$ 138,922
Restricted cash	4,000	4,875	0
Cash and cash equivalents and restricted cash	315,130	162,442	138,922	$ 285,578
Gross pawn service charges receivable	23,674	41,838	39,443
Allowance for uncollectible pawn service charges receivable	(6,242)	(10,036)	(9,596)
Pawn service charges receivable, net	17,432	31,802	29,847
Gross inventory	133,319	189,092	184,886
Inventory reserves	(10,207)	(9,737)	(9,084)
Inventory, net	123,112	179,355	175,802
Prepaid expenses and other	8,980	4,784	13,189
Accounts receivable and other	6,813	10,889	20,335
Income taxes receivable	9,961	10,248	3,841
Prepaid expenses and other current assets	25,754	25,921	37,365
Property and equipment, gross	265,149	265,922	260,216
Accumulated depreciation	(207,051)	(198,565)	(194,002)
Property and equipment, net	58,098	67,357	66,214
Accounts payable	15,304	25,946	18,329
Accrued expenses and other	43,054	52,011	41,652
Accounts payable, accrued expenses and other current liabilities	$ 58,358	$ 77,957	$ 59,981