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SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN - Components of Net Periodic Pension Cost (Details) - Supplemental Executive Retirement Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Components of net periodic pension cost [Abstract]
Service cost	$ 429	$ 273	$ 857	$ 546
Interest cost	292	321	583	642
Amortization of prior service cost	274	274	549	549
Amortization of loss	1,234	546	2,468	1,091
Total net periodic benefit cost	$ 2,229	$ 1,414	$ 4,457	$ 2,828

X

- Definition

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

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