v3.21.2
FINANCIAL INSTRUMENT - Estimated fair values of the company's financial instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Financial assets    
Redemption settlement assets, restricted $ 733,952 $ 693,461
Carrying Amount    
Financial assets    
Redemption settlement assets, restricted 733,952 693,461
Other investments 254 253
Derivative instruments - Assets 1,890 353
Financial liabilities    
Derivative instruments - Liability 847 1,505
Fair Value    
Financial assets    
Redemption settlement assets, restricted 733,952 693,461
Other investments 254 253
Derivative instruments - Assets 1,890 353
Financial liabilities    
Derivative instruments - Liability $ 847 $ 1,505