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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Other comprehensive income/(loss):
Other comprehensive income before tax	$ 15,486			$ 8,338			$ 8,502	$ 47,583
Provision (Benefit)
Other comprehensive income/(loss), provision (benefit)	3,252			1,751			1,786	9,992
After Tax
Other comprehensive income/(loss) before reclassifications	15,221			11,157			15,703	51,797
Less reclassification adjustments, provision (benefit)	(2,987)			(4,570)			(8,987)	(14,206)
Other comprehensive income net of tax	12,234	$ (15,857)	$ 10,339	6,587	$ (5,023)	$ 36,027	6,716	37,591
Available-for-Sale Securities
Other comprehensive income/(loss):
Unrealized gain /(losses) , before tax	18,876			26,354			25,797	62,079
Other comprehensive income before tax	18,874			26,350			25,789	61,015
Provision (Benefit)
Unrealized gain/ (losses), provision (benefit)	3,964			5,534			5,418	13,037
Other comprehensive income/(loss), provision (benefit)	3,964			5,533			5,417	12,813
After Tax
Other comprehensive income/(loss) before reclassifications	14,912			20,820			20,379	49,042
Less reclassification adjustments, provision (benefit)	(2)			(3)			(7)	(840)
Other comprehensive income net of tax	14,910			20,817			20,372	48,202
Available-for-Sale Securities \| Gain on sale of available-for sale investment securities
Other comprehensive income/(loss):
Less reclassification adjustments, before tax							0	(1,052)
Provision (Benefit)
Less reclassification adjustments, provision (benefit)							0	(221)
After Tax
Less reclassification adjustments, provision (benefit)							0	(831)
Available-for-Sale Securities \| Other income
Other comprehensive income/(loss):
Less reclassification adjustments, before tax	(2)			(4)			(8)	(12)
Provision (Benefit)
Less reclassification adjustments, provision (benefit)	0			(1)			(1)	(3)
After Tax
Less reclassification adjustments, provision (benefit)	(2)			(3)			(7)	(9)
Held-to-Maturity Securities
Other comprehensive income/(loss):
Less reclassification adjustments, before tax	(186)			(443)			(204)	(757)
Other comprehensive income before tax	(186)			(443)			(204)	(757)
Provision (Benefit)
Less reclassification adjustments, provision (benefit)	(39)			(93)			(43)	(159)
Other comprehensive income/(loss), provision (benefit)	(39)			(93)			(43)	(159)
After Tax
Other comprehensive income/(loss) before reclassifications	0			0			0	0
Less reclassification adjustments, provision (benefit)	(147)			(350)			(161)	(598)
Other comprehensive income net of tax	(147)			(350)			(161)	(598)
Cash Flow Hedges
Other comprehensive income/(loss):
Unrealized gain /(losses) , before tax	391			(12,232)			(5,920)	3,488
Less reclassification adjustments, before tax	(3,593)			(5,337)			(11,163)	(16,163)
Other comprehensive income before tax	(3,202)			(17,569)			(17,083)	(12,675)
Provision (Benefit)
Unrealized gain/ (losses), provision (benefit)	82			(2,569)			(1,244)	733
Less reclassification adjustments, provision (benefit)	(755)			(1,120)			(2,344)	(3,395)
Other comprehensive income/(loss), provision (benefit)	(673)			(3,689)			(3,588)	(2,662)
After Tax
Other comprehensive income/(loss) before reclassifications	309			(9,663)			(4,676)	2,755
Less reclassification adjustments, provision (benefit)	(2,838)			(4,217)			(8,819)	(12,768)
Other comprehensive income net of tax	$ (2,529)			$ (13,880)			$ (13,495)	$ (10,013)