v3.21.2
REDEMPTION SETTLEMENT ASSETS, RESTRICTED - Unrealized losses and fair value (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, Fair Value $ 178,215 $ 46,190
Less than 12 months, Unrealized Losses (2,367) (86)
12 Months or Greater, Fair Value 14,224 10,316
12 Months or Greater, Unrealized Losses (174) (87)
Fair Value 192,439 56,506
Unrealized Losses (2,541) (173)
Corporate bonds    
Debt Securities, Available-for-sale [Line Items]    
Less than 12 months, Fair Value 178,215 46,190
Less than 12 months, Unrealized Losses (2,367) (86)
12 Months or Greater, Fair Value 14,224 10,316
12 Months or Greater, Unrealized Losses (174) (87)
Fair Value 192,439 56,506
Unrealized Losses $ (2,541) $ (173)