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Nature of Operations and Summary of Significant Accounting Policies - Stock Compensation Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Nature of Operations and Summary of Significant Accounting Policies |  |  |
Share based compensation expense | $ 1.6 | $ 1.4 | $ 1.2

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