Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Stock Based Compensation (Details 2)

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Stockholders' Equity and Stock Based Compensation (Details 2) (Options, USD $)
In Millions, except Share data, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Options
  
Number of Options  
Outstanding at the beginning of the period (in shares) 310,640
Exercised (in shares) (25,000)
Outstanding at the end of the period (in shares) 285,640
Exercisable at the end of the period (in shares) 285,640
Weighted Average Exercise Price  
Outstanding at the beginning of the period (in dollars per share) $ 8.65
Exercised (in dollars per share) $ 8.03
Outstanding at the end of the period (in dollars per share) $ 8.71
Exercisable at the end of the period (in dollars per share) $ 8.71
Weighted Average Remaining Contractual Term  
Outstanding at the end of the period 9 months 18 days
Exercisable at the end of the period 9 months 18 days
Aggregate Intrinsic Value  
Aggregate intrinsic value of options outstanding $ 1.2
Aggregate intrinsic value of options exercisable $ 1.2
Market value (in dollars per share) $ 12.95