CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) (Parenthetical) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Net of issuance cost | $ 3,548 | |
| Series B convertible preferred stock | ||
| Net of issuance cost | $ 433 | |
| Series C convertible preferred stock | ||
| Net of issuance cost | $ 214 | |