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Fair Value Measurements and Fair Values of Financial Instruments (SBA Servicing Assets) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Fair Value Measurements and Fair Values of Financial Instruments [Abstract]    
Beginning balance, January 1st $ 1,102  
Additions 1,175 1,160
Fair value adjustments 63 (58)
Ending balance, December 31st $ 2,340 $ 1,102