RETIREMENT BENEFITS (Defined Benefit Retirement Plan) (Details) - SERPs - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in benefit obligation:
Benefit obligation at beginning of year	$ 8,755	$ 9,274
Interest cost	456	434
Actuarial gains	256	(378)
Benefits paid	(574)	(575)
Benefit obligation at end of the year	8,893	8,755	$ 9,274
Change in plan assets, at fair value:
Fair value of plan assets at beginning of year	0	0
Employer contributions	574	575
Benefits paid	(574)	(575)
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	(8,893)	(8,755)
Amounts recognized in AOCI:
Net actuarial losses	251	426
Total amounts recognized in AOCI	$ 251	$ 426
Benefit obligation actuarial assumptions:
Weighted-average discount rate	5.00%	5.20%
Components of net periodic benefit cost:
Interest cost	$ 456	$ 432	448
Amortization of net actuarial (gains) losses	0	(2)	(74)
Amortization of net transition obligation	0	0	7
Net periodic benefit cost	$ 456	$ 430	$ 381
Net periodic cost actuarial assumptions:
Weighted-average discount rate	5.40%	4.90%	5.10%