Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Stock Based Compensation (Details 3)

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Stockholders' Equity and Stock Based Compensation (Details 3) (2006 Plan and 2012 Plan, Restricted stock, USD $)
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
2006 Plan and 2012 Plan | Restricted stock
   
Shares    
Nonvested shares at the beginning of the period 199,550  
Granted (in shares) 70,689  
Vested (in shares) (75,223)  
Forfeited (in shares) (34,118)  
Nonvested shares at the end of the period 160,898  
Weighted Average Grant Date Fair Value    
Nonvested shares at the beginning of period (in dollars per share) $ 12.02  
Granted (in dollars per share) $ 15.84  
Vested (in dollars per share) $ 11.51  
Forfeited (in dollars per share) $ 11.58  
Nonvested shares at the end of period (in dollars per share) $ 12.99  
Unrecognized compensation cost (in dollars) $ 2,200,000  
Weighted average period for recognition of unrecognized compensation cost 2 years 8 months 12 days  
Share-based compensation cost (in dollars) $ 853,000 $ 830,000