ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Components of Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net change in fair value of investment securities:
Less: Reclassification adjustment for losses (gains) realized in net income	$ 30
Less: Amortization of unrealized losses on investment securities transferred to HTM	(6,762)	$ (7,159)	$ (7,440)
Other comprehensive income (loss)	36,880	11,148	29,518
Defined benefit plans, Before Tax
Net actuarial gains (losses) arising during the period	(256)	379	(182)
Net change in fair value of investment securities:
Less: Reclassification adjustment for losses (gains) realized in net income	8
Other comprehensive income (loss)	9,726	2,974	8,130
Defined benefit plans, Tax Effect
Net actuarial gains (losses) arising during the period	(67)	99	(48)
Net change in fair value of investment securities:
Less: Reclassification adjustment for losses (gains) realized in net income	(22)
Net change in fair value of investment securities	25,619	1,174	15,852
Total other comprehensive income (loss), net of tax	27,154	8,174	21,388
Defined benefit plans, Net of Tax
Net actuarial losses arising during the period	(189)	280	(134)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Noncontrolling Interest
Net change in fair value of investment securities:
Net unrealized gains (losses) on investment securities arising during the period	34,764	(8,310)	19,762
Less: Reclassification adjustment for losses (gains) realized in net income		9,934	2,074
Less: Amortization of unrealized losses on investment securities transferred to HTM	6,762	7,159	7,440
Net change in fair value of investment securities	41,556	8,783	29,276
Net change in fair value of investment securities:
Net unrealized gains (losses) on investment securities arising during the period	9,167	(2,170)	5,437
Less: Reclassification adjustment for losses (gains) realized in net income		2,620	547
Less: Amortization of unrealized losses on investment securities transferred to HTM	1,784	1,902	2,105
Net change in fair value of investment securities	10,959	2,352	8,089
Net change in fair value of investment securities:
Net unrealized gains (losses) on investment securities arising during the period	25,597	(6,140)	14,325
Less: Reclassification adjustment for losses (gains) realized in net income		(7,314)	(1,527)
Less: Amortization of unrealized losses on investment securities transferred to HTM	(4,978)	(5,257)	(5,335)
Net change in fair value of investment securities	30,597	6,431	21,187
Gain (Loss) On Unrealized Losses On Derivative Instruments
Net change in fair value of investment securities:
Net unrealized gains arising during the period	(4,420)	1,988	491
Net change in fair value of investment securities:
Net unrealized gains arising during the period	(1,166)	523	107
Net change in fair value of investment securities:
Other comprehensive (loss) income before reclassifications	(3,254)	1,465	384
Amortization of net actuarial (gains) losses
Defined benefit plans, Before Tax
Amortization		2	74
Defined benefit plans, Tax Effect
Amortization		0	20
Defined benefit plans, Net of Tax
Amortization		2	54
Amortization of net transition obligation
Defined benefit plans, Before Tax
Amortization			(7)
Defined benefit plans, Tax Effect
Amortization			(2)
Defined benefit plans, Net of Tax
Amortization			(5)
Defined Benefit Plans
Net change in fair value of investment securities:
Other comprehensive income (loss)		377	(249)
Net change in fair value of investment securities:
Other comprehensive income (loss)		99	(66)
Net change in fair value of investment securities:
Other comprehensive (loss) income before reclassifications	(189)	280	(134)
Total other comprehensive income (loss), net of tax	(189)	278	(183)
Defined benefit plans, Net of Tax
Amortization	$ 0	$ 2	$ 49