Registration of securities issued in business combination transactions

OTHER NONCURRENT ASSETS - Change in the balance of other investments (Details)

v3.21.2
OTHER NONCURRENT ASSETS - Change in the balance of other investments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
OTHER NONCURRENT ASSETS    
Percentage of annual interest rate due in two years 3.00%  
Period of annual interest due 2 years  
Change in fair value, net $ 3,000 $ 0
Ending balance $ 3,000