EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic EPS Calculation
Net income available for common stock	$ 98,934	$ 95,575
Weighted Average Number of Shares Outstanding, Basic	53,922	53,372
Earnings Per Share, Basic	$ 1.83	$ 1.79
Diluted EPS Calculation
Net income available for common stock	$ 98,934	$ 95,575
Effect of dilutive securities on shares	108	143
Weighted Average Number of Shares Outstanding, Diluted	54,030	53,515
Earnings Per Share, Diluted	$ 1.83	$ 1.79
Net Income (Loss) Available to Common Stockholders, Diluted	$ 98,934	$ 95,575