ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 3,426,747	$ 3,197,400
Unrealized (loss) gain on debt securities available-for-sale, net of tax	(4,020)	10,926
Balance at end of period	3,484,738	3,253,195
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(35,939)	(46,507)
Balance at end of period	(39,959)	(35,581)
Unrealized Gain (Loss) on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(35,939)	(46,507)
Unrealized (loss) gain on debt securities available-for-sale, net of tax	(4,020)	10,926
Balance at end of period	$ (39,959)	$ (35,581)