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Earnings per Share (Basic and Diluted) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Numerator:        
Net income $ 3,883 $ 3,394 $ 10,124 $ 11,233
Denominator for basic net income per common share:        
Weighted average common shares outstanding (in shares) 12,461 12,339 12,424 12,313
Denominator for diluted net income per share:        
Weighted average common shares outstanding (in shares) 12,461 12,339 12,424 12,313
Dilutive effect of stock options and restricted stock (in shares) 279 261 304 191
Diluted weighted average shares (in shares) 12,740 12,600 12,728 12,504
Earnings per common share:        
Basic (in USD per share) $ 0.31 $ 0.28 $ 0.81 $ 0.91
Diluted (in USD per share) $ 0.30 $ 0.27 $ 0.80 $ 0.90