XML 57 R49.htm IDEA: XBRL DOCUMENT v3.22.1
REVENUE - Accounts receivable, net and Deferred revenue (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Accounts receivable, net $ 5,321 $ 475
Deferred revenue $ 30,005 $ 17,270