Strategic Investments - Additional Disclosures (Details) - 1 months ended Jun. 30, 2018 - Cash Converters International Limited $ in Millions, $ in Millions	USD ($) shares	AUD ($) shares
Schedule of Equity Method Investments [Line Items]
Number of common shares owned (shares)	214,183,714	214,183,714
Percentage of common shares owned	34.75%	34.75%
Shares acquired in affiliate (shares)	57,631,230	57,631,230
Consideration paid to acquire shares of affiliate	$ 14.0	$ 39.5
Percent ownership increase	3.00%	3.00%
Underwritten Placement
Schedule of Equity Method Investments [Line Items]
Shares acquired in affiliate (shares)	123,300,000	123,300,000