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Benefit Plans - Salary Continuation Plan (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of salary paid upon retirement | 25.00% |
Period before ratable vesting begins | 5 years |
Age ratable vesting ends | 65 years |
Liability under the Salary Continuation Plan | $ 3.2 | $ 3.0
Minimum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Payment period determined by service period | 7 years |
Maximum |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Payment period determined by service period | 15 years |

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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. + Details
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