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SHARE-BASED COMPENSATION - Summary of Activity of Non-Performance-Based & Performance-Based Options (Details) - Non Performance Based Options - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Stock Option Activity, Shares    
Under option, beginning of year (in shares) 279,695 387,193
Exercised (in shares) (160,960) (107,498)
Forfeitures (in shares) (1,600) 0
Under option, end of year (in shares) 117,135 279,695
Exercisable at end of year (in shares) 117,135 279,695
Stock Options Weighted Average Exercise Price    
Under option, beginning of year, Weighted-Average Exercise Price (in dollars per share) $ 28.13 $ 26.51
Exercised, Weighted-Average Exercise Price (in dollars per share) 27.35 22.26
Forfeited, Weighted-Average Exercise Price (in dollars per share) 22.34 0
Under option, end of year, Weighted-Average Exercise Price (in dollars per share) 28.79 28.13
Exercisable at end of year, Weighted-Average Exercise Price (in dollars per share) $ 28.79 $ 28.13
Stock Option Activity, Additional Disclosures    
Under option, end of year, Weighted Average Contractual Term 7 months 28 days 1 year 3 months 3 days
Exercisable at end of year, Weighted Average Contractual Term 7 months 28 days 1 year 3 months 3 days
Exercised, Aggregate Intrinsic Value $ 3,406 $ 1,128
Under option, end of year, Aggregate Intrinsic Value 2,389 2,780
Exercisable at end of year, Aggregate Intrinsic Value $ 2,389 $ 2,780