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Stock-Based Compensation; Changes in Equity (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Shares, Balance (in shares) 218,500  
Shares under Option, Granted (in shares) 0  
Shares under Option, Cancelled (in shares) 0  
Shares under Option, Exercised (in shares) 0  
Shares, Outstanding (in shares) 218,500 218,500
Shares, Exercisable 71,468  
Weighted Average Exercise Price, Balance (in dollars per share) $ 5.21  
Weighted Average Exercise Price, Granted (in dollars per share) $ 0  
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) $ 5.21 $ 5.21
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 4.45  
Weighted Average Contractual Life, Outstanding 3 years 2 months 12 days 4 years
Weighted Average Contractual Life, Exercisable 2 years 9 months 18 days  
Aggregate Intrinsic Value Outstanding (in dollars) $ 67,260  
Aggregate Intrinsic Value Outstanding (in dollars) 57,525 67,260
Aggregate Intrinsic Value, Exercisable (in dollars) $ 57,525