EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 472,224	$ 276,466	$ 206,115
Denominator (shares in 000's):
Basic weighted average shares outstanding (in shares)	58,030,000	59,309,000	59,633,000
Effect of dilutive securities - Stock options and awards (in shares)	719,000	753,000	615,000
Diluted weighted average shares outstanding (in shares)	58,749,000	60,062,000	60,248,000
Basic earnings per share (in dollars per share)	$ 8.14	$ 4.66	$ 3.46
Diluted earnings per share (in dollars per share)	$ 8.04	$ 4.60	$ 3.42
Anti-dilutive shares excluded from the computation of diluted earnings per share	127,358	2,949	615,302