Strategic Investments - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended						62 Months Ended
	Jun. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investment				$ 0		$ 12,140,000		$ 0
Income (loss) from equity method investments				(255,000)		(5,473,000)		5,948,000
Impairment of investments		$ 11,000,000	$ 26,800,000
Impairment of investments, net of tax		7,200,000	17,400,000
Investment in unconsolidated affiliate		$ 37,128,000	$ 56,182,000	$ 37,128,000		56,182,000
Cash Converters International Limited | Lawsuit for Charging Excessive Interest on Short-Term Loans
Schedule of Equity Method Investments [Line Items]
Amount paid toward settlement of class-action lawsuit	$ 17,700,000
Cash Converters International Limited
Schedule of Equity Method Investments [Line Items]
Number of common shares owned (shares)		151,948,000		151,948,000
Percentage of common shares owned		31.00%		31.00%
Payments to acquire equity method investment										$ 80,900,000
Income (loss) from equity method investments				$ (300,000)		(5,500,000)		7,100,000
Dividends received				2,200,000		4,800,000		$ 5,100,000
Accumulated undistributed after-tax earnings included in consolidated retained earnings		$ 6,500,000		6,500,000
(Loss) profit for the year					$ (3,839,000)		$ (18,149,000)		$ 19,397,000
Restructuring costs					24,500,000
Other					$ 4,200,000
Impairment of investments						26,800,000
Impairment of investments, net of tax						$ 17,400,000
Albemarle & Bond Holdings
Schedule of Equity Method Investments [Line Items]
Number of common shares owned (shares)								16,644,640
Percentage of common shares owned								30.00%
Income (loss) from equity method investments								$ (1,200,000)
Dividends received								0
Impairment of investments								7,900,000
Impairment of investments, net of tax								5,400,000
Investment in unconsolidated affiliate								$ 0
United Kingdom | Cash Converters International Limited
Schedule of Equity Method Investments [Line Items]
Impairment of investments				11,000,000
Impairment of investments, net of tax				7,200,000
United Kingdom | Minimum | Cash Converters International Limited
Schedule of Equity Method Investments [Line Items]
Loss contingency accrual		$ 9,200,000		$ 9,200,000