CAPITAL STOCK (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Authorized common stock (in shares)	199,000,000	199,000,000
Common stock and treasury stock and the share activity
Balance at the beginning of the year (in shares)	70,900,000
Balance at the end of the year (in shares)	71,700,000	70,900,000
Cash dividends paid on the common stock	$ 103,683	$ 99,461	$ 98,509
Common Shares
Common stock and treasury stock and the share activity
Balance at the beginning of the year (in shares)	70,848,810	70,370,812	69,516,805
Restricted stock vestings (in shares)	150,970	176,535	171,935
Balance at the end of the year (in shares)	71,679,658	70,848,810	70,370,812
Common Shares | Employee option exercises
Common stock and treasury stock and the share activity
Stock option exercises (in shares)	679,878	301,463	634,572
Common Shares | Director option exercises
Common stock and treasury stock and the share activity
Stock option exercises (in shares)	0	0	47,500
Treasury Shares
Common stock and treasury stock and the share activity
Balance at the beginning of the year (in shares)	5,555,027	4,852,709	4,528,051
Common stock repurchased (in shares)	398,594	860,000	614,974
Balance at the end of the year (in shares)	5,775,295	5,555,027	4,852,709
Treasury Shares | Employee option exercises
Common stock and treasury stock and the share activity
Stock option exercises (in shares)	178,326	157,682	290,316