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Accumulated Other Comprehensive Income (Details) - USD ($) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | $ 142,815,000 | $ 122,733,000 |  | $ 138,953,000 | $ 116,125,000 |
Other comprehensive loss before reclassifications | 310,000 |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income | 686,000 | 344,000 |  |  |  |
Income tax benefit | 82,000 | (16,000) |  |  |  |
Post Retirement Benefit Plan Items |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | 4,273,000 | 2,414,000 |  | 4,400,000 | 2,507,000 |
Other comprehensive loss before reclassifications | (37,000) | 0 |  |  |  |
Amounts reclassified from accumulated other comprehensive income | (124,000) | (118,000) |  |  |  |
Income tax benefit | 34,000 | 25,000 |  |  |  |
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent |  | 734,000 | $ 687,000 |  | 901,000 | $ 546,000
Other comprehensive loss before reclassifications | 347,000 |  |  |  |  |
Amounts reclassified from accumulated other comprehensive income |  | (562,000) | (226,000) |  |  |
Income tax benefit |  | (48,000) | $ 41,000 |  |  |
AOCI Attributable to Parent [Member] |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |
Stockholders' Equity Attributable to Parent | $ 5,007,000 | $ 3,101,000 |  | $ 5,301,000 | $ 3,053,000 |

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