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Stock-Based Compensation Plans ESPP (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement [Abstract] |  |  |
ESPP shares purchased | 162,667 | 134,645 | 134,156
Average purchase price per share (85% of market value) | $ 11.68 | $ 14.06 | $ 13.92
Compensation expense recognized (in thousands) | $ 348 | $ 334 | $ 329

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