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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Amortized cost $ 493,509 $ 446,016
Fair value 486,432 445,033
Reported value measurement    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Notes payable 1,311,000 1,311,000
Estimate of fair value measurement    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Notes payable $ 1,339,000 $ 1,453,000