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Summary of Significant Accounting Policies, Depreciable Assets (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Depreciable Assets |  |  |
Impairments | $ 0.0 | $ 0.0 | $ 0.0
Machinery and Equipment and Office Equipment | Minimum |  |  |
Depreciable Assets |  |  |
Estimated useful life | 3 years |  |
Machinery and Equipment and Office Equipment | Maximum |  |  |
Depreciable Assets |  |  |
Estimated useful life | 12 years |  |
Building | Minimum |  |  |
Depreciable Assets |  |  |
Estimated useful life | 20 years |  |
Building | Maximum |  |  |
Depreciable Assets |  |  |
Estimated useful life | 40 years |  |

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