Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.8.0.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Feb. 16, 2018
Dec. 31, 2017
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Accumulated deficit $ 16,407     $ 14,480
Exercise price per warrant (in dollars per share) $ 2.80   $ 2.80  
Warrant        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Anti-dilutive securities (in shares) 667,824 7,747,425    
Convertible Notes        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Anti-dilutive securities (in shares)   772,486    
Employee Stock Option        
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Anti-dilutive securities (in shares) 1,575,000 530,000