XML 44 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
Net Loss Per Share - Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Net Loss Per Share          
Common stock, outstanding shares 9,395,920 0 9,395,920 0 0
Numerator:          
Net loss $ (6,815) $ (7,277) $ (23,134) $ (19,901)  
Accretion of preferred stock to redemption value     (244)    
Net loss attributable to common stockholders $ (6,815)   $ (23,378)    
Denominator:          
Weighted average number of common shares outstanding - basic and diluted (in shares) 9,395,920   8,584,558    
Net loss per share attributable to common stockholders - basic and diluted (in dollars per share) $ (0.73)   $ (2.72)