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Fair Value Disclosures; Derivative Instruments (Details) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Warrant Liability $ 818,000 $ 714,000
Liabilities, Fair Value Disclosure 818,000 714,000
Fair Value, Inputs, Level 1 [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Warrant Liability 0 0
Fair Value, Inputs, Level 2 [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Warrant Liability 818,000 714,000
Liabilities, Fair Value Disclosure 818,000 714,000
Fair Value, Inputs, Level 3 [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Warrant Liability $ 0 $ 0