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Stock Incentive Plan Compensation (Stock Option Valuation Assumptions) (Details) - Common Stock Options [Member]
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Volatility   139.00%
Expected term (in years) 6 years  
Dividend yield 0.00% 0.00%
Minimum [Member]    
Risk-free interest rate 1.22% 1.55%
Volatility 113.00%  
Expected term (in years)   6 years
Maximum [Member]    
Risk-free interest rate 1.63% 1.78%
Volatility 123.00%  
Expected term (in years)   10 years