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SHAREHOLDERS’ EQUITY - Summary of Activities in Common Stock (Details) - USD ($)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Equity [Abstract]      
Stock option exercises (in shares) 627 1,174 999
Issuance/ Exercise of stock options $ 96,714 $ 124,363 $ 96,908
Purchases of common stock (in shares) (33) (59) (72)
Purchases of common stock $ (12,977) $ (15,484) $ (14,289)
Employee stock plan purchases (in shares) 35 40 53
Employee stock plan purchases $ 13,158 $ 10,912 $ 9,576
Restricted stock units vested, net of withheld shares upon award settlement (in shares) 147 76 53
Restricted stock units vested, net of withheld shares upon award settlement $ (25,158) $ (12,923) $ (5,361)