Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical)

v3.20.4
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS      
Foreign currency translation adjustments, tax $ 0 $ 0 $ 0
Foreign currency gains (losses) on intercompany loan of a long-term investment nature, tax 0 0 0
Unrealized holding gains (losses) on available-for-sale debt securities, tax 0 0 0
Reclassification adjustment for gains on available-for-sale debt securities included in net loss, tax $ 0 $ 0 $ 0