Progressive Acquisition Purchase Price (Details) (Progressive Finance Holdings, LLC, USD $) In Thousands, unless otherwise specified	0 Months Ended	6 Months Ended
	Apr. 14, 2014	Jun. 30, 2014
Business Acquisition [Line Items]
Proceeds from Long-term Debt		$ 491,300
Cash Consideration	185,454
Deferred Cash Consideration	29,106
Estimated Purchase Price	705,810
Senior Notes | Senior Unsecured Notes, 4.75% Note Due 2017
Business Acquisition [Line Items]
Proceeds from Long-term Debt	300,000
Senior Notes | Senior Unsecured Notes, 3.95% Due 2018
Business Acquisition [Line Items]
Proceeds from Long-term Debt	126,250
Line of Credit | Credit Facility, 2014 | Revolver
Business Acquisition [Line Items]
Proceeds from Long-term Debt	$ 65,000