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Income Taxes (Narratives) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Operating Loss Carryforwards [Line Items] |  |
Interest expense limitation carryforward | $ 10.9 |
Valuation allowance | 44.4 | $ 37.7
Unrecognized tax benefits that would impact effective tax rate | 48.1 |
Unrecognized tax benefits, income tax penalties and interest expense | 4.5 |
Accrued interest and penalties | 5.0 | $ 9.6
Expected decrease of unrecognized tax benefits | 3.0 |
Domestic Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss carryforwards | 11.1 |
Valuation allowance | 25.3 |
Domestic Tax Authority | Research Tax Credit Carryforward |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credit carryforward | 14.8 |
State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss carryforwards | 39.2 |
Foreign Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss carryforwards | 59.5 |
Valuation allowance | $ 19.1 |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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