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Pension Plans (Narrative) (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) plan	Mar. 31, 2021 USD ($)
Retirement Benefits [Abstract]
Number of defined benefit plans | plan	2
Net periodic pension cost (income)	$ 51,000	$ 191,000
Contributions to plan	0
Expected contributions to plan	$ 0

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Defined Benefit Plans, Number Of Plans

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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