SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,411,863	$ 1,271,958	$ 1,213,700
Other comprehensive income/(loss) before reclassifications	45,662	26,888	(53,936)
Amounts reclassified from AOCI	(17,664)	(16,190)	(760)
Other comprehensive income/(loss) net of tax	27,998	10,698	(54,696)
Ending balance	1,489,026	1,411,863	1,271,958
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(40,145)	(50,843)	3,853
Other comprehensive income/(loss) net of tax	27,998	10,698	(54,696)
Ending balance	(12,147)	(40,145)	(50,843)
AOCI, Securities | Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(68,447)	(115,561)	(6,932)
Other comprehensive income/(loss) before reclassifications	31,715	47,114	(108,624)
Amounts reclassified from AOCI	(843)	0	(5)
Other comprehensive income/(loss) net of tax	30,872	47,114	(108,629)
Ending balance	(37,575)	(68,447)	(115,561)
AOCI, Securities | Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8,724)	16,357	16,153
Other comprehensive income/(loss) before reclassifications	0	(25,199)	0
Amounts reclassified from AOCI	(502)	118	204
Other comprehensive income/(loss) net of tax	(502)	(25,081)	204
Ending balance	(9,226)	(8,724)	16,357
AOCI, Cash Flow Hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	37,026	48,361	(5,368)
Other comprehensive income/(loss) before reclassifications	13,947	4,973	54,688
Amounts reclassified from AOCI	(16,319)	(16,308)	(959)
Other comprehensive income/(loss) net of tax	(2,372)	(11,335)	53,729
Ending balance	$ 34,654	$ 37,026	$ 48,361