Supplemental Consolidated Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Gross pawn service charges receivable	$ 48,892	$ 49,629	$ 43,316
Allowance for uncollectible pawn service charges receivable	(9,933)	(11,311)	(9,262)
Pawn service charges receivable, net	38,959	38,318	34,054
Gross inventory	185,706	176,198	171,029
Inventory reserves	(10,284)	(9,201)	(7,719)
Inventory, net	175,422	166,997	163,310
Prepaid expenses and other	11,460	9,402	11,305
Accounts receivable and other	19,487	20,933	14,958
Restricted cash	255	267	253
2019 Convertible Notes Hedges	21	2,552	0
Prepaid expenses and other current assets	31,223	33,154	26,516
Property and equipment, gross	253,336	253,022	231,549
Accumulated depreciation	(183,566)	(179,373)	(169,451)
Property and equipment, net	69,770	73,649	62,098
Accounts payable	15,141	10,500	14,229
Accrued expenses and other	42,487	47,300	45,978
Accounts payable, accrued expenses and other current liabilities	57,628	$ 57,800	$ 60,207
Potential exposure to refiner restructuring	4,400
Full reserve recorded	$ 4,400