Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical)

v3.19.3
Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Parenthetical) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
January 2019 Public Offering    
Stock offering transaction cost $ 739  
May 2019 Public Offering    
Stock offering transaction cost $ 1,683  
2018 Public Offering    
Stock offering transaction cost   $ 2,096
Over-Allotment Option    
Overallotment related to transaction cost   $ 10