Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

General (Details)

v3.21.1
General (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Number of ordinary shares represent by each ADS (in Shares) 30    
Net losses $ (14,443) $ (12,625) $ (6,571)
Cash flows from operating activities $ (12,063) $ (11,084) $ (4,155)