Segment Information - Operating Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) segment	Mar. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Revenues:
Total revenues	$ 285,639	$ 258,423	$ 585,630	$ 522,750
Gross profit	167,592	149,182	340,165	301,679
Segment and corporate expenses (income):
Store expenses	114,582	101,269	225,137	202,072
General and administrative	18,266	15,609	34,809	31,085
Depreciation and amortization	8,219	7,963	16,784	15,951
Loss (gain) on sale or disposal of assets and other	3	73	(169)	57
Other income		(2,465)	(765)	(2,465)
Interest expense	3,402	3,390	6,842	9,580
Interest income	(2,882)	(1,898)	(5,521)	(2,562)
Equity in net income of unconsolidated affiliates	(1,719)	32,501	(2,872)	30,917
Other expense (income)	(165)	80	(436)	(154)
Income (loss) before income taxes	28,651	(7,340)	66,356	17,198
Operating Segments
Revenues:
Total revenues	285,639	258,423	585,630	522,750
Gross profit	167,592	149,182	340,165	301,679
Segment and corporate expenses (income):
Store expenses	114,582	101,269	225,137	202,072
General and administrative	0	0	0	(3)
Depreciation and amortization	4,908	4,892	9,871	9,862
Loss (gain) on sale or disposal of assets and other	(96)	73	(266)	57
Other income		(2,465)	0	(2,465)
Interest expense	0	0	0	0
Interest income	(1,241)	(299)	(2,234)	(468)
Equity in net income of unconsolidated affiliates	(1,719)	32,501	(2,872)	30,917
Other expense (income)	15	(40)	(32)	34
Income (loss) before income taxes	51,143	13,251	110,561	61,673
Operating Segments | U.S. Pawn
Revenues:
Total revenues	207,574	188,531	425,012	383,356
Gross profit	123,982	112,338	251,427	227,691
Segment and corporate expenses (income):
Store expenses	80,840	71,946	158,095	145,250
General and administrative	0	0	0	0
Depreciation and amortization	2,516	2,560	5,140	5,315
Loss (gain) on sale or disposal of assets and other	(30)	81	(4)	84
Other income		0	0	0
Interest expense	0	0	0	0
Interest income	0	(1)	0	(1)
Equity in net income of unconsolidated affiliates	0	0	0	0
Other expense (income)	0	0	0	0
Income (loss) before income taxes	40,656	37,752	88,196	77,043
Operating Segments | Latin America Pawn
Revenues:
Total revenues	78,034	69,882	160,583	139,362
Gross profit	43,579	36,834	88,703	73,956
Segment and corporate expenses (income):
Store expenses	33,742	29,323	67,042	56,822
General and administrative	0	0	0	(3)
Depreciation and amortization	2,392	2,332	4,731	4,547
Loss (gain) on sale or disposal of assets and other	(66)	(8)	(262)	(27)
Other income		(2,465)	0	(2,465)
Interest expense	0	0	0	0
Interest income	(608)	(298)	(1,028)	(467)
Equity in net income of unconsolidated affiliates	0	0	0	0
Other expense (income)	1	(46)	(47)	24
Income (loss) before income taxes	8,118	7,996	18,267	15,525
Operating Segments | Other Investments
Revenues:
Total revenues	31	10	35	32
Gross profit	31	10	35	32
Segment and corporate expenses (income):
Store expenses	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Loss (gain) on sale or disposal of assets and other	0	0	0	0
Other income		0	0	0
Interest expense	0	0	0	0
Interest income	(633)	0	(1,206)	0
Equity in net income of unconsolidated affiliates	(1,719)	32,501	(2,872)	30,917
Other expense (income)	14	6	15	10
Income (loss) before income taxes	2,369	(32,497)	4,098	(30,895)
Corporate Items
Revenues:
Total revenues	0	0	0	0
Gross profit	0	0	0	0
Segment and corporate expenses (income):
Store expenses	0	0	0	0
General and administrative	18,266	15,609	34,809	31,088
Depreciation and amortization	3,311	3,071	6,913	6,089
Loss (gain) on sale or disposal of assets and other	99	0	97	0
Other income		0	(765)	0
Interest expense	3,402	3,390	6,842	9,580
Interest income	(1,641)	(1,599)	(3,287)	(2,094)
Equity in net income of unconsolidated affiliates	0	0	0	0
Other expense (income)	(180)	120	(404)	(188)
Income (loss) before income taxes	(22,492)	(20,591)	(44,205)	(44,475)
Merchandise sales
Revenues:
Total revenues	164,687	152,507	344,090	316,294
Cost of goods sold	106,259	97,339	221,469	202,216
Merchandise sales | Operating Segments
Revenues:
Total revenues	164,687	152,507	344,090	316,294
Cost of goods sold	106,259	97,339	221,469	202,216
Merchandise sales | Operating Segments | U.S. Pawn
Revenues:
Total revenues	114,849	108,740	240,362	227,054
Cost of goods sold	72,798	67,643	151,507	140,899
Merchandise sales | Operating Segments | Latin America Pawn
Revenues:
Total revenues	49,838	43,767	103,728	89,240
Cost of goods sold	33,461	29,696	69,962	61,317
Merchandise sales | Operating Segments | Other Investments
Revenues:
Total revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Merchandise sales | Corporate Items
Revenues:
Total revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Jewelry scrapping sales
Revenues:
Total revenues	13,714	12,825	27,796	20,709
Cost of goods sold	11,788	11,902	23,996	18,855
Jewelry scrapping sales | Operating Segments
Revenues:
Total revenues	13,714	12,825	27,796	20,709
Cost of goods sold	11,788	11,902	23,996	18,855
Jewelry scrapping sales | Operating Segments | U.S. Pawn
Revenues:
Total revenues	12,686	9,814	25,501	16,990
Cost of goods sold	10,794	8,550	22,078	14,766
Jewelry scrapping sales | Operating Segments | Latin America Pawn
Revenues:
Total revenues	1,028	3,011	2,295	3,719
Cost of goods sold	994	3,352	1,918	4,089
Jewelry scrapping sales | Operating Segments | Other Investments
Revenues:
Total revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Jewelry scrapping sales | Corporate Items
Revenues:
Total revenues	0	0	0	0
Cost of goods sold	0	0	0	0
Pawn service charges
Revenues:
Total revenues	107,163	93,030	213,612	185,623
Pawn service charges | Operating Segments
Revenues:
Total revenues	107,163	93,030	213,612	185,623
Pawn service charges | Operating Segments | U.S. Pawn
Revenues:
Total revenues	80,010	69,945	159,083	139,255
Pawn service charges | Operating Segments | Latin America Pawn
Revenues:
Total revenues	27,153	23,085	54,529	46,368
Pawn service charges | Operating Segments | Other Investments
Revenues:
Total revenues	0	0	0	0
Pawn service charges | Corporate Items
Revenues:
Total revenues	0	0	0	0
Other revenues
Revenues:
Total revenues	75	61	132	124
Other revenues | Operating Segments
Revenues:
Total revenues	75	61	132	124
Other revenues | Operating Segments | U.S. Pawn
Revenues:
Total revenues	29	32	66	57
Other revenues | Operating Segments | Latin America Pawn
Revenues:
Total revenues	15	19	31	35
Other revenues | Operating Segments | Other Investments
Revenues:
Total revenues	31	10	35	32
Other revenues | Corporate Items
Revenues:
Total revenues	$ 0	$ 0	$ 0	$ 0