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Benefit Plans, Net Pension Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net Pension Costs [Abstract]
Amortization from accumulated other comprehensive loss in 2022	$ 217
SERP [Member]
Net Pension Costs [Abstract]
Interest cost on projected benefit obligation	213	$ 266	$ 315
Amortization of actuarial loss	257	159	46
Net pension costs	$ 470	$ 425	$ 361

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

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Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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