EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Basic earnings per share:
Net income	$ 14,793	$ 55,824	$ 21,668	$ 102,072
Weighted-average common shares	57,355,000	57,731,000	57,231,000	58,480,000
Basic earnings per share	$ 0.26	$ 0.97	$ 0.38	$ 1.75
Diluted earnings per share:
Net income	$ 14,793	$ 55,824	$ 21,668	$ 102,072
Weighted-average common shares	57,355,000	57,731,000	57,231,000	58,480,000
Effect of dilutive awards:
Employee stock plans	314,000	574,000	423,000	712,000
Diluted weighted-average common shares	57,669,000	58,305,000	57,654,000	59,192,000
Diluted earnings per share	$ 0.26	$ 0.96	$ 0.38	$ 1.72
Stock awards excluded in the computation of diluted earnings per share	0	0	0	0