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REVENUE AND CONTRACT LIABILITY Unearned Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]      
Contract with Customer, Liability $ 61,421 $ 59,387 $ 72,165
Increase (Decrease) in Contract with Customer, Liability 41,623 51,384  
Contract with Customer, Liability, Revenue Recognized $ (39,589) $ (64,162)