EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic earnings per share:
Net income	$ 19,796	$ 45,964	$ 41,464	$ 148,036
Weighted-average common shares	57,383,000	57,172,000	57,282,000	58,039,000
Basic earnings per share	$ 0.34	$ 0.80	$ 0.72	$ 2.55
Diluted earnings per share:
Net income	$ 19,796	$ 45,964	$ 41,464	$ 148,036
Weighted-average common shares	57,383,000	57,172,000	57,282,000	58,039,000
Effect of dilutive awards:
Employee stock plans	358,000	431,000	429,000	596,000
Diluted weighted-average common shares	57,741,000	57,603,000	57,711,000	58,635,000
Diluted earnings per share	$ 0.34	$ 0.80	$ 0.72	$ 2.52
Stock awards excluded in the computation of diluted earnings per share	0	0	0	0