XML 58 R5.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]    
Net loss $ (55,178) $ (30,055)
Other comprehensive income (loss):    
Unrealized gain (loss) on available-for-sale debt securities 38 (4)
Total comprehensive loss $ (55,140) $ (30,059)