ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 3,484,738	$ 3,253,195	$ 3,426,747	$ 3,197,400
Unrealized (loss) gain on debt securities available-for-sale, net of tax	1,939	(15,037)	(2,081)	(4,111)
Balance at end of period	3,566,614	3,284,630	3,566,614	3,284,630
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(39,959)	(35,581)	(35,939)	(46,507)
Balance at end of period	$ (38,020)	$ (50,618)	$ (38,020)	$ (50,618)