Quarterly Information (Unaudited) - Additional Disclosures (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			12 Months Ended
	Jul. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Quarterly Financial Data [Line Items]
Gain on restructured notes receivable		$ (3,000)			$ 3,048	$ 0	$ 0
Gain (loss) on extinguishment of debt					(5,250)	0	0
Impairment of goodwill and long-lived assets					$ 0	73,244	$ 30,782
Impairment of investments			$ 11,000
Impairment of investments, net of tax			7,200
Restructuring			11,800
Operating Segments | U.S. Pawn
Quarterly Financial Data [Line Items]
Impairment of goodwill and long-lived assets				$ 73,200
Grupo Finmart | Discontinued Operations, Disposed of by Sale
Quarterly Financial Data [Line Items]
Gain on disposition			34,200
Transaction costs on sale			9,800
Estimated future costs			1,800			$ 1,800
Loss on purchase of notes receivable			$ 2,100
2.125% Cash Convertible Senior Notes Due 2019
Quarterly Financial Data [Line Items]
Gain (loss) on extinguishment of debt		$ (5,300)
Early repayment of principal	$ 35,000