ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 3,253,195	$ 3,007,159	$ 3,197,400	$ 2,966,451
Unrealized loss on debt securities available-for-sales, net of tax	(15,037)	(10,794)	(4,111)	(28,225)
Balance at end of period	3,284,630	3,073,376	3,284,630	3,073,376
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(35,581)	(1,841)	(46,507)	15,590
Balance at end of period	$ (50,618)	$ (12,635)	$ (50,618)	$ (12,635)