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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Income Tax Disclosure [Abstract] |  |  |
US federal net operating loss carryforwards | $ 7,200 |  |
Various state net operating loss carryforwards | 7,700 |  |
Valuation allowance | 1,257 | $ 1,235 |
Tax deductible goodwill | 35,176 | $ 20,923 | $ 20,079
Tax deductible goodwill | $ 35,200 |  |

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