Subsequent Events (Details) (USD $)	0 Months Ended
	Apr. 16, 2014 Term ABS 2014-1 [Member] Subsequent Event [Member]	Mar. 31, 2014 2021 Senior Notes [Member]	Jan. 22, 2014 2021 Senior Notes [Member]
Subsequent Event [Line Items]
Debt financing amount	$ 299,000,000	$ 300,000,000	$ 300,000,000
Expected annual financing costs, percentage	2.20%
Debt term	24 months