Supplemental Consolidated Financial Information - Supplemental Information (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Sep. 30, 2017	Mar. 31, 2017
Pawn service charges receivable, net:
Gross pawn service charges receivable	$ 39,065	$ 42,117	$ 35,177
Allowance for uncollectible pawn service charges receivable	(8,572)	(10,569)	(8,149)
Pawn service charges receivable, net	30,493	31,548	27,028
Inventory, net:
Gross inventory	166,802	161,212	143,237
Inventory reserves	(8,160)	(6,801)	(6,229)
Inventory, net	158,642	154,411	137,008
Prepaid expenses and other	16,217	12,047	13,326
Accounts receivable and other	12,732	16,718	10,596
Restricted cash	273	0	7,089
Prepaid expenses and other current assets	29,222	28,765	31,011
Property and equipment, net:
Property and equipment, gross	239,954	224,240	212,460
Accumulated depreciation	(175,121)	(166,281)	(158,830)
Total	64,833	57,959	53,630
Accounts payable	10,542	13,064	8,459
Accrued expenses and other	50,147	48,479	53,880
Accounts payable, accrued expenses and other current liabilities	$ 60,689	$ 61,543	$ 62,339