EARNINGS PER COMMON SHARE - Computation of Basic and Diluted 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
Numerator for basic and diluted earnings per share -income available to common shareholders:
Net income	$ 65,667	$ 51,520	$ 136,070	$ 92,821
Denominator for basic earnings per share - weighted average shares	93,924,068	93,555,131	93,828,829	93,470,005
Effect of dilutive securities -
Employee stock awards	1,245,280	894,686	1,236,505	887,387
Denominator for diluted earnings per share - adjusted weighted average shares	95,169,348	94,449,817	95,065,334	94,357,392
Basic	$ 0.70	$ 0.55	$ 1.45	$ 0.99
Diluted	$ 0.69	$ 0.55	$ 1.43	$ 0.98