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Note 13 - Retirement, Savings and Deferred Compensation Plans - Components of SERP Expense (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Service cost	$ 99	$ 92	$ 198	$ 185
Interest cost	226	221	452	443
Net amortization	20	18	40	35
Net periodic benefit cost	$ 345	$ 331	$ 690	$ 663

X

- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

+ References

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X

- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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X

- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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X

- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Balance Type:
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