ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ 2,966,451	$ 2,647,088	$ 2,469,582
Current year changes, net of tax	(62,097)	(17,915)	15,510
Balance at end of period	3,197,400	2,966,451	2,647,088
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	15,590	33,505	17,995
Balance at end of period	(46,507)	15,590	33,505
Unrealized Gain (Loss) on Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	0	0	(147)
Current year changes, net of tax	0	0	147
Balance at end of period	0	0	0
Unrealized Gain (Loss) on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	15,590	33,505	18,142
Current year changes, net of tax	(62,097)	(17,915)	15,363
Balance at end of period	$ (46,507)	$ 15,590	$ 33,505