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Income Taxes (Details 3) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Income Taxes |  |
Liability for uncertain tax positions, beginning | $ 677,000 | $ 643,000
Increases due to interest and state tax | 34,000 | 34,000
Liability for uncertain tax positions, ending | $ 711,000 | $ 677,000

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