v3.21.2
SUPPLEMENTAL CASH FLOW INFORMATION - Reconciliation of cash and cash equivalents (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Cash and cash equivalents $ 198,865 $ 278,841 $ 198,761  
Total cash, cash equivalents and restricted cash 262,373 $ 337,525 248,286 $ 175,132
Other current assets        
Restricted cash 5,312   4,154  
Redemption settlement assets        
Restricted cash $ 58,196   $ 45,371