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Employee Benefit Plans (Schedule of Changes in Benefit Obligation and Plan Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Amounts recognized in accumulated other comprehensive loss |  |  |
Total | $ 3,277 | $ 3,944 |
Supplemental Executive Retirement Plan [Member] |  |  |
Benefit obligations: |  |  |
Beginning of year | 16,031 | 14,682 |
Service cost | 504 | 464 | $ 395
Interest cost | 389 | 460 | 523
Actuarial loss (gain) | 222 | 911 |
Defined Benefit Plan, Benefit Obligation, Benefits Paid | 536 | 486 |
End of year | 16,610 | 16,031 | 14,682
Fair value of plan assets: |  |  |
Beginning of year | 0 | 0 |
Employer contributions | 536 | 486 |
Defined Benefit Plan, Plan Assets, Benefits Paid | 536 | 486 |
End of year | 0 | 0 | 0
Unfunded status at end of year(1) | 16,610 | 16,031 |
Amounts recognized in accumulated other comprehensive loss |  |  |
Net actuarial loss | 2,653 | 3,090 |
Total | 2,653 | 3,090 |
Other Postretirement Benefits Plan [Member] |  |  |
Benefit obligations: |  |  |
Beginning of year | 4,420 | 4,049 |
Service cost | 26 | 28 | 48
Interest cost | 103 | 123 | 148
Actuarial loss (gain) | (202) | 371 |
Defined Benefit Plan, Benefit Obligation, Benefits Paid | 180 | 151 |
End of year | 4,167 | 4,420 | 4,049
Fair value of plan assets: |  |  |
Beginning of year | 0 | 0 |
Employer contributions | 180 | 151 |
Defined Benefit Plan, Plan Assets, Benefits Paid | 180 | 151 |
End of year | 0 | 0 | $ 0
Unfunded status at end of year(1) | 4,167 | 4,420 |
Amounts recognized in accumulated other comprehensive loss |  |  |
Net actuarial loss | 718 | 967 |
Prior service credit | (94) | (113) |
Total | $ 624 | $ 854 |

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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount, after tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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