Purchased Receivables - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge-offs	$ 1,196,000	$ 1,172,000
Number Of Segments And Classes Of Purchased Receivables	1
Purchased Receivables Past Due	2,872,000	5,466,000
Total Modifications	7,912,000	12,100,000
Purchased Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge-offs	150,000	34,000
Purchased Receivables Past Due	0	0
Total Modifications	$ 0	$ 0	$ 0