Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement (Details Textual)

v3.8.0.1
Fair Value Measurement (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Liability $ 149 $ 672 $ 130 $ 20
Fair Value Adjustment of Warrants $ 19 $ (118)    
Common Stock [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Warrants To Purchase Common Stock 210,000      
Fair Value, Inputs, Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative Liability $ 149   $ 130  
Fair Value, Inputs, Level 3 [Member] | Warrant Liability [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fair Value Assumptions, Expected Volatility Rate 76.81%      
Fair Value Assumptions, Risk Free Interest Rate 2.48%      
Fair Value Assumptions, Expected Term 3 years 9 months 29 days      
Fair Value Assumptions, Expected Dividend Rate 0.00%