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Earnings per Share (Basic and Diluted) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Numerator:        
Net income $ 614 $ 3,385 $ 4,308 $ 6,241
Denominator for basic net income per common share:        
Weighted average common shares outstanding (in shares) 12,579 12,436 12,542 12,405
Denominator for diluted net income per share:        
Weighted average common shares outstanding (in shares) 12,579 12,436 12,542 12,405
Dilutive effect of stock options and restricted stock (in shares) 251 316 232 317
Diluted weighted average shares (in shares) 12,830 12,752 12,774 12,722
Earnings per common share:        
Basic (in USD per share) $ 0.05 $ 0.27 $ 0.34 $ 0.50
Diluted (in USD per share) $ 0.05 $ 0.27 $ 0.34 $ 0.49