Purchased Receivables - Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2015 purchased_receivable	Mar. 31, 2014 purchased_receivable	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of segments and classes of purchased receivables	1
Loans classified as troubled debt restructuring	$ 9,033,000		$ 7,700,000
Purchased Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of purchased receivables past due	0	0
Loans classified as troubled debt restructuring	$ 0		$ 0