Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Stock Based Compensation (Details3)

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Stockholders' Equity and Stock Based Compensation (Details3) (USD $)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Weighted Average Grant Date Fair Value    
Share-based compensation cost (in dollars) $ 463,000 $ 589,000
2006 Plan | Restricted stock awards
   
Shares    
Nonvested shares at the beginning of the period 262,275  
Vested (in shares) (46,700)  
Nonvested shares at the end of the period 215,575  
Weighted Average Grant Date Fair Value    
Nonvested shares at the beginning of period (in dollars per share) $ 10.44  
Vested (in dollars per share) $ 9.91  
Nonvested shares at the end of period (in dollars per share) $ 10.55  
Unrecognized compensation cost (in dollars) $ 2,300,000  
Weighted average period for recognition of unrecognized compensation cost 3 years 1 month 6 days