RETIREMENT PLANS - Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Pension Plan
Other changes in plan assets and benefit obligations recognized in other comprehensive income:
Net (gain) loss	$ 259	$ (792)
Recognition of net actuarial gain or (loss)	(47)	(74)
Total changes	212	(866)
Changes, net of taxes	154	(624)
SERP liability adjustments
Other changes in plan assets and benefit obligations recognized in other comprehensive income:
Net (gain) loss	(1,315)	(206)
Recognition of net actuarial gain or (loss)	(115)	(125)
Total changes	(1,430)	(331)
Changes, net of taxes	$ (1,029)	$ (239)

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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