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Convertible Debt At Fair Value (Narrative) (Details) - 6.25% Convertible Promissory Note [Member] - USD ($)
12 Months Ended
Dec. 31, 2016
Mar. 16, 2016
Debt Instrument [Line Items]    
Interest rate 6.25% 6.25%
Principal amount   $ 1,012,000
Conversion price per share   $ 10.00
Maximum ownership percentage of voting stock upon debt conversion   49.00%
Gain (loss) on derivatives and convertible debt $ (303,000)