Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Rollforward (Details)

v3.7.0.1
Fair Value Measurements Rollforward (Details) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance at December 31, 2016 $ 893,000  
Change in fair value of warrant liability 78,000 $ 0
Balance at March 31, 2017 971,000  
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance at December 31, 2016 893,000  
Change in fair value of warrant liability 78,000  
Balance at March 31, 2017 $ 971,000