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RETIREMENT PLANS - SERP (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
RETIREMENT PLANS
Tax-free gains related to life insurance policy claims			$ 2,380
Supplemental Retirement Plan ('SERP')
RETIREMENT PLANS
Fair value of plan assets	$ 30,700		30,700		$ 26,800
Trading gains (losses), net	1,000	$ (305)	2,700	$ 903
Defined benefit plan	24,400		24,400		$ 23,700
Supplemental Retirement Plan ('SERP') | Selling, general and administrative expenses
RETIREMENT PLANS
Unrealized gains (loss)	$ 1,100	$ (262)	$ 2,800	$ 1,000

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- Definition

The amount of unrealized gain (loss) on change in fair value of liability.

+ References

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- Definition

This element represents the amount of trading gains (losses) of plan assets under the defined benefit plan.

+ References

No definition available.

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- Definition

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

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.

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