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Fair Value Measurements Fair Value Inputs, Liabilities, Quantitative Information (Tables)
 12 Months Ended
Dec. 31, 2016
Convertible Notes Due in 2019 [Member]  
Fair Value, Option, Quantitative Disclosures [Line Items]  
Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]
The main inputs and assumptions into the fair value model for the New Convertible Notes at December 31, 2016 were as follows:
Company's stock price at the end of the period
$
0.25

Expected volatility
97.90
%
Credit spreads
69.8
%
Risk-free interest rate
1.47
%