STOCK-BASED COMPENSATION - Summary of Option Activity (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Stock Awards Plans
Stock options activity
Outstanding at the beginning of the period (in shares)	3,072,503
Exercised (in shares)	(284,885)
Forfeited or expired (in shares)	(400)
Outstanding at the end of the period (in shares)	2,787,218
Stock option weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)	$ 71.99
Options exercised, Weighted average exercise price per share (in dollars per share)	64.62
Options forfeited or expired, Weighted average exercise price per share (in dollars per share)	51.80
Outstanding at the end of the period (in dollars per share)	$ 72.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	2,787,218
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 72.74
Options outstanding, Weighted average remaining contractual term (in years)	3 years 4 months 24 days
Options exercisable, Weighted average remaining contractual term (in years)	3 years 4 months 24 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 64,654
Options exercisable, Aggregate intrinsic value (in USD)	64,654
Options exercised, Intrinsic value, at end of period	$ 13,618	$ 65,139
Director Stock Option Plans
Stock options activity
Outstanding at the beginning of the period (in shares)	51,700
Exercised (in shares)	0
Forfeited or expired (in shares)	0
Outstanding at the end of the period (in shares)	51,700
Stock option weighted average exercise price
Outstanding at the beginning of the period (in dollars per share)	$ 63.91
Options exercised, Weighted average exercise price per share (in dollars per share)	0
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)	$ 63.91
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options exercisable, Number of options (in shares)	51,700
Options exercisable, Weighted average exercise price per share (in dollars per share)	$ 63.91
Options outstanding, Weighted average remaining contractual term (in years)	1 year 3 months 18 days
Options exercisable, Weighted average remaining contractual term (in years)	1 year 3 months 18 days
Options outstanding, Aggregate intrinsic value (in USD)	$ 1,656
Options exercisable, Aggregate intrinsic value (in USD)	1,656
Options exercised, Intrinsic value, at end of period	$ 0	$ 4,248