EARNINGS PER SHARE - Reconciliation of Basic and Diluted Earnings Per Share Computations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator for basic and diluted earnings per share:
Net income, basic	$ 91,340	$ 135,799	$ 279,507	$ 329,270
Net income, diluted	$ 91,340	$ 135,799	$ 279,507	$ 329,270
Denominator:
Weighted-average basic shares outstanding (in shares)	54,122	54,111	54,097	54,278
Dilutive effect of outstanding stock awards (in shares)	297	270	314	264
Dilutive shares outstanding (in shares)	54,419	54,381	54,411	54,542
Basic earnings per share (in dollars per share)	$ 1.69	$ 2.51	$ 5.17	$ 6.07
Diluted earnings per share (in dollars per share)	$ 1.68	$ 2.50	$ 5.14	$ 6.04