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Earnings Per Share Earnings Per Share (Numerator and Denominator) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Earnings Per Share [Abstract]        
Net income $ 4,144 $ 2,663 $ 9,403 $ 7,122
Less: Preferred Stock dividends 0 (3) (4) (7)
Net income available to common stockholders 4,144 2,660 9,399 7,115
Effect of dilutive securities, Convertible junior subordinated debentures (TIDES) 0   1,474  
Net income available to common stockholders and assumed conversions $ 4,144   $ 10,873  
Net income available to common stockholders (in shares) 18,201 18,077 18,170 18,171
Effect of dilutive securities, Stock options (in shares) 164 76 181 66
Effect of dilutive securities, Convertible junior subordinated debentures (in shares) 0 0 4,392 0
Net income available to common stockholders and assumed conversions (in shares) 18,365 18,153 22,743 18,237
Basic earnings per common share (in dollars per Share) $ 0.23 $ 0.15 $ 0.52 $ 0.39
Diluted earnings per common share (in dollars per Share) $ 0.23 $ 0.15 $ 0.48 $ 0.39