STOCK PLANS (Summary of Stock Option Activity) (Details) - Stock options	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Stock Options, Shares
Balance at beginning of year	1,117,359
Options granted (in shares)	102,292
Options exercised	(299,682)
Options canceled	(350)
Options forfeited	0
Balance at end of year	919,619
Exercisable at end of year	671,164
Stock Options, Weighted Average Exercise Price
Balance at beginning of year, weighted average exercise price (in dollars per share) | $ / shares	$ 93.31
Shares granted, weighted average exercise price (in dollars per share) | $ / shares	178.15
Shares exercised, weighted average exercise price (in dollars per share) | $ / shares	118.17
Shares canceled, weighted average exercise price (in dollars per share) | $ / shares	63.08
Balance at end of year, weighted average exercise price (in dollars per share) | $ / shares	108.85
Exercisable at end of year, weighted average exercise price (in dollars per share) | $ / shares	$ 95.20