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EMPLOYEE BENEFIT PLANS - Components of net periodic cost (benefit) (Details) - Retirement Income Plan - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
EMPLOYEE BENEFIT PLANS
Interest cost	$ 37	$ 58
Expected return on plan assets	(72)	(73)
Amortization of net losses	18	24
Net periodic cost (benefit)	$ (17)	$ 9

X

- Definition

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

+ References

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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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- Definition

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

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

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