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Stock-Based Compensation; Changes in Equity (Details) (USD $)
 9 Months Ended
Sep. 30, 2012
Shares under Option, Balance ( in shares) 162,500
Shares under Option, Granted (in shares) 0
Shares under Option, Cancelled (in shares) (3,500)
Shares under Option, Exercised (in shares) (32,000)
Shares under Option, Balance (in shares) 127,000
Shares under Option, Exercisable (in shares) 51,875
Weighted Average Exercise Price, Balance (in dollars per share) $ 4.25
Weighted Average Exercise Price, Granted (in dollars per share) $ 0
Weighted Average Exercise Price, Cancelled (in dollars per share) $ 5.26
Weighted Average Exercise Price, Exercised (in dollars per share) $ 1.94
Weighted Average Exercise Price, Outstanding (in dollars per share) $ 4.81
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 2.89
Weighted Average Contractual Life, Outstanding 2 years 10 months 24 days
Weighted Average Contractual Life, Exercisable 2 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding (in dollars) $ 108,423
Aggregate Intrinsic Value, Exercisable (in dollars) 108,423
Warrant [Member]
  
Shares under Option, Balance ( in shares) 0
Shares under Option, Granted (in shares) 140,048
Shares under Option, Cancelled (in shares) 0
Shares under Option, Exercised (in shares) 0
Shares under Option, Balance (in shares) 140,048
Shares under Option, Exercisable (in shares) 0
Weighted Average Exercise Price, Balance (in dollars per share) $ 0
Weighted Average Exercise Price, Granted (in dollars per share) $ 0.01
Weighted Average Exercise Price, Cancelled (in dollars per share) $ 0
Weighted Average Exercise Price, Exercised (in dollars per share) $ 0
Weighted Average Exercise Price, Outstanding (in dollars per share) $ 0.01
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 0
Weighted Average Contractual Life, Outstanding 9 years 9 months 18 days
Weighted Average Contractual Life, Exercisable 0 years
Aggregate Intrinsic Value, Outstanding (in dollars) 680,633
Aggregate Intrinsic Value, Exercisable (in dollars) $ 0