STOCK-BASED COMPENSATION - Summary of Option Activity (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Stock Awards Plans
Stock options activity
Outstanding at the beginning of the period (in shares)	2,623,944
Granted (in shares)	314,524
Exercised (in shares)	(208,987)
Forfeited or expired (in shares)	(2,867)
Outstanding at the end of the period (in shares)	2,726,614
Stock option weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)	$ 73.34
Options granted, Weighted average exercise price per share (in dollars per share)	116.20
Options exercised, Weighted average exercise price per share (in dollars per share)	66.19
Options forfeited or expired, Weighted average exercise price per share (in dollars per share)	71.70
Outstanding at the end of the period (in dollars per share)	$ 78.83
Assumptions used to estimate fair value of stock options granted
Dividend yield assumption	1.41%
Expected Stock Price Volatility	16.55%
Risk-free interest rate	3.57%
Expected Life of Option (years)	7 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	2,412,090
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 73.96
Options outstanding, Weighted average remaining contractual term (in years)	4 years
Options exercisable, Weighted average remaining contractual term (in years)	3 years 2 months 12 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 107,907
Options exercisable, Aggregate intrinsic value (in USD)	106,692
Options exercised, Intrinsic value, at end of period	$ 10,118	$ 3,780
Director Stock Option Plans
Stock options activity
Outstanding at the beginning of the period (in shares)	51,700
Granted (in shares)	0
Exercised (in shares)	(3,500)
Forfeited or expired (in shares)	0
Outstanding at the end of the period (in shares)	48,200
Stock option weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)	$ 63.91
Options granted, Weighted average exercise price per share (in dollars per share)	0
Options exercised, Weighted average exercise price per share (in dollars per share)	56.49
Options forfeited or expired, Weighted average exercise price per share (in dollars per share)	0
Outstanding at the end of the period (in dollars per share)	$ 64.45
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	48,200
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 64.45
Options outstanding, Weighted average remaining contractual term (in years)	10 months 24 days
Options exercisable, Weighted average remaining contractual term (in years)	10 months 24 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 2,590
Options exercisable, Aggregate intrinsic value (in USD)	2,590
Options exercised, Intrinsic value, at end of period	$ 218	$ 0