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Fair Value Measurements - Narrative (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Mar. 02, 2022 | Sep. 30, 2020 | Feb. 28, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |  |  |
Interest expense - net | $ 2,956,000 | $ 3,761,000 |  |  |
Swap |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |  |  |
Derivative, notional amount |  |  |  | $ 50,000,000 | $ 50,000,000
Investment income | 958,000 | 289,000 |  |  |
Interest expense - net | $ 940,000 | $ 470,000 |  |  |
Swap | Subsequent Event |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions |  |  |  |  |
Derivative, notional amount |  |  | $ 20,000,000 |  |

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