STOCK-BASED COMPENSATION - Summary of Option Activity (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock Awards Plans
Assumptions used to estimate fair value of stock options granted
Dividend Yield	1.41%
Expected Stock Price Volatility	16.55%
Risk-free Interest Rate	3.57%
Expected Life of Option (years)	7 years
Stock options activity
Outstanding at the beginning of the period (in shares)	2,623,944
Granted (in shares)	315,005
Exercised (in shares)	(749,899)
Forfeited or expired (in shares)	(6,266)
Outstanding at the end of the period (in shares)	2,182,784	2,623,944
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)	116.19
Options exercised, Weighted average exercise price per share (in dollars per share)	69.94
Options forfeited or expired, Weighted average exercise price per share (in dollars per share)	93.23
Outstanding at the end of the period (in dollars per share)	$ 80.63	$ 73.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	1,871,178
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 74.70
Options outstanding, Weighted average remaining contractual term (in years)	3 years 6 months
Options exercisable, Weighted average remaining contractual term (in years)	2 years 7 months 6 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 93,830
Options exercisable, Aggregate intrinsic value (in USD)	91,533
Options exercised, Intrinsic value, at end of period	$ 38,706	$ 20,608	$ 69,862
Director option exercises
Stock options activity
Outstanding at the beginning of the period (in shares)	51,700
Granted (in shares)	0
Exercised (in shares)	(32,700)
Forfeited or expired (in shares)	0
Outstanding at the end of the period (in shares)	19,000	51,700
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)	62.36
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)	$ 66.59	$ 63.91
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	19,000
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 66.59
Options outstanding, Weighted average remaining contractual term (in years)	4 months 24 days
Options exercisable, Weighted average remaining contractual term (in years)	4 months 24 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 1,084
Options exercisable, Aggregate intrinsic value (in USD)	1,084
Options exercised, Intrinsic value, at end of period	$ 1,978	$ 0	$ 4,248