Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheet (Parenthetical)

v3.19.2
Condensed Consolidated Balance Sheet (Parenthetical) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Redeemable convertible preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Commitments and contingencies (see Note 6)