Segment Reporting - Revenues and Long-Lived Assets by Geographic Information (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021
Segment Reporting Information [Line Items]
Pawn loans	$ 173,618	$ 175,901	$ 125,268
Inventory, net	119,890	$ 110,989	86,214
Segments | U.S. Pawn
Segment Reporting Information [Line Items]
Pawn loans	133,515		95,369
Inventory, net	93,320		69,782
Segments | Latin America Pawn
Segment Reporting Information [Line Items]
Pawn loans	40,103		29,899
Inventory, net	26,570		16,432
Segments | Other Investments
Segment Reporting Information [Line Items]
Pawn loans	0		0
Inventory, net	0		0
Corporate Items
Segment Reporting Information [Line Items]
Pawn loans	0		0
Inventory, net	$ 0		$ 0