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Employee Benefit Plans (Narrative) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items] |  |  |
Company's matching contribution of employees' salary |  |  | 3.50%
Cash surrender value of life insurance | $ 6,600,000 | $ 6,400,000 |
Deferred compensation liability, current | 378,000 | 68,000 |
Deferred compensation liability, non-current | $ 5,952,000 | $ 5,518,000 |
401(K) [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Company's matching contribution of employees' salary | 4.00% | 4.00% |
Company's total contributions | $ 2,100,000 | $ 1,900,000 | $ 1,600,000
Discretionary contributions | $ 0 | $ 0 | $ 0

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