Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 29, 2012
Accounting Policies [Line Items]
Other than temporary impairment charges	$ 20,000	$ 202,000	$ 75,000
Loans available for sale	69,900,000	11,300,000
Amortization of intangible assets	1,142,000	1,001,000	1,001,000
Minimum exercisable prices (in dollars per share)	$ 20.98	$ 7.36	$ 7.36
Maximum exercisable prices (in dollars per share)	$ 25.43	$ 25.43	$ 25.43
Restricted cash and cash equivalents	238,700,000	181,300,000
Cash pledged as collateral	25,000,000	25,000,000
Acquired software and personnel of a prepaid program manager				1,800,000
Gross Carrying Amount	13,823,000	13,823,000
Amortization expense per year	1,189,000
Number of stock repurchased under, Stock repurchase program (in shares)	100,000	100,000	100,000
Maximum number of shares authorized (in shares)			750,000
Purchase of treasury shares (in shares)	0	0	100,000
Average cost of repurchased stock (in dollars per share)			$ 8.66
Stock Options [Member]
Accounting Policies [Line Items]
Common stock options (in shares)	13,000	2,401,493	2,705,115
Stock Appreciation Rights (SARs) [Member]
Accounting Policies [Line Items]
Common stock options (in shares)			60,000
Internal Use Software [Member]
Accounting Policies [Line Items]
Estimated useful life	7 years
Total capitalized software costs	4,200,000	1,300,000
Amortization of intangible assets	907,000	669,000	582,000
Fraud Monitoring Software [Member]
Accounting Policies [Line Items]
Estimated useful life	8 years
Customer Lists [Member]
Accounting Policies [Line Items]
Estimated useful life	12 years
Gross Carrying Amount	12,006,000	12,006,000
Amortization expense per year	1,000,000
Amortization expense over next five years	$ 5,000,000