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Stock Based Compensation - Exercise Price Range (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Exercise price range:  
Exercise price range, number of outanding options 227,750
Exercise price range, exercisable, number of outstanding options 227,750
2.75
  
Exercise price range:  
Exercise price range, range of exercise prices $ 2.75
Exercise price range, number of outanding options 4,200
Exercise price range, weighted average contractual life in years 9 months 18 days
Exercise price range, exercisable, number of outstanding options 4,200
3.21
  
Exercise price range:  
Exercise price range, range of exercise prices $ 3.21
Exercise price range, number of outanding options 160,550
Exercise price range, weighted average contractual life in years 1 month 6 days
Exercise price range, exercisable, number of outstanding options 160,550
3.28
  
Exercise price range:  
Exercise price range, range of exercise prices $ 3.28
Exercise price range, number of outanding options 40,000
Exercise price range, weighted average contractual life in years 1 year 2 months 12 days
Exercise price range, exercisable, number of outstanding options 40,000
6.40
  
Exercise price range:  
Exercise price range, range of exercise prices $ 6.40
Exercise price range, number of outanding options 18,000
Exercise price range, weighted average contractual life in years 1 year 9 months 18 days
Exercise price range, exercisable, number of outstanding options 18,000
7.98
  
Exercise price range:  
Exercise price range, range of exercise prices $ 7.98
Exercise price range, number of outanding options 5,000
Exercise price range, weighted average contractual life in years 2 years
Exercise price range, exercisable, number of outstanding options 5,000