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Stock-Based Compensation; Changes in Equity (Details 1) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Shares Outstanding at the end of period (in shares) 148,000  
Shares, Exercisable (in shares) 58,400  
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share) $ 5.22  
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 5.19  
Weighted Average Remaining Contractual Life, Outstanding (in years) 2 years 8 months 12 days  
Weighted Average Remaining Contractual Life, Exercisable (in years) 1 year 8 months 12 days  
Aggregate Intrinsic Value Outstanding (in dollars) $ 181,730  
Aggregate Intrinsic Value, Exercisable (in dollars) $ 73,592  
Warrant [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Shares Outstanding, beginning of period (in shares) 140,048  
Shares Outstanding at the end of period (in shares) 140,048 140,048
Shares, Exercisable (in shares) 0  
Weighted Average Exercise Price, Outstanding, beginning of period (in dollars per share) $ 0.01  
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share) 0.01 $ 0.01
Weighted Average Exercise Price, Exercisable (in dollars per share) $ 0  
Weighted Average Remaining Contractual Life, Outstanding (in years) 6 years 3 months 18 days 6 years 6 months 18 days
Weighted Average Remaining Contractual Life, Exercisable (in years) 0 years  
Aggregate Intrinsic Value Outstanding (in dollars) $ 714,245  
Aggregate Intrinsic Value Outstanding (in dollars) 901,909 $ 714,245
Aggregate Intrinsic Value, Exercisable (in dollars) $ 0