Purchased Receivables - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) Segment	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) purchased_receivable Segment	Jun. 30, 2014 USD ($) purchased_receivable	Dec. 31, 2014 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of segments and classes of purchased receivables | Segment	1		1
Loans classified as troubled debt restructuring	$ 8,955,000		$ 8,955,000		$ 7,700,000
Financing Receivable, Allowance for Credit Losses, Write-downs	0	$ 63,000	$ 188,000	$ 392,000
Purchased Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of purchased receivables past due | purchased_receivable			0	0
Loans classified as troubled debt restructuring	0		$ 0		$ 0
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 0	$ 239,000	$ 0	$ 239,000
Partial Loan | Purchased Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs				214,000
Full Loan | Purchased Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs				$ 25,000