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Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contribution to pension plan in excess of minimum required contribution | $ 0 | $ 0 | $ 0
Accumulated benefit obligation | $ 90,100 | $ 88,900 |
Investment strategy, percentage in long-term growth | 97.00% |  |
Investment strategy, percentage in near-term benefit payments | 3.00% |  |
Percentage of Plan assets | 100.00% | 99.00% |
Postretirement benefit plan, accrued liabilities | $ 33 | $ 108 |
Minimum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of portfolio invest directly or indirectly | 35.00% |  |
Percentage of remaining portfolio invest directly or indirectly | 10.00% |  |
Maximum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Percentage of portfolio invest directly or indirectly | 90.00% |  |
Percentage of remaining portfolio invest directly or indirectly | 65.00% |  |
SERP [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Unfunded pension liability | $ 1,000 | 1,300 |
Pension expense | $ 39 | $ 51 | $ 366
Investment Firm One [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Portfolio management, controlled percentage | 100.00% | 99.00% |
Defined Benefit Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Portfolio management, controlled percentage |  | 1.00% |

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