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Employee Benefit Plans (Narrative) (Details) - Pension Benefits [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected total contributions for current fiscal year	$ 0
Employer contributions	$ 0	$ 0

X

- Definition

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

+ References

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-Publisher FASB
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X

- Definition

Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

+ References

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-Publisher FASB
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- Definition

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.

+ References

No definition available.

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