Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Details)

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Net Income Per Share (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
Net Income Per Share        
Net income $ 6,052 $ 7,286 $ 10,916 $ 14,514
Basic weighted average shares outstanding 15,896 15,605 15,860 15,591
Basic net income per common share (in dollars per share) $ 0.38 $ 0.47 $ 0.69 $ 0.93
Diluted Shares Outstanding        
Basic weighted average shares outstanding 15,896 15,605 15,860 15,591
Weighted average stock options outstanding (in shares) 216 259 219 362
Diluted weighted average shares outstanding 16,112 15,864 16,079 15,953
Diluted net income per common share (in dollars per share) $ 0.38 $ 0.46 $ 0.68 $ 0.91
Potentially dilutive shares excluded from diluted per share amounts:        
Stock options (in shares) 146   163  
Potentially anti-dilutive shares excluded from diluted per share amounts:        
Stock options (in shares) 306 217 428 417