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Commitments And Contingencies (Narrative) (Details) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2015 | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Long-term Purchase Commitment [Line Items] |  |  |  |
Rent expense |  | $ 24.2 | $ 15.2 | $ 11.5
Furrion Limited |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Long-term purchase commitment, time period | 6 years |  |  |
Weighted Average Cost of Capital |  |  |  |
Long-term Purchase Commitment [Line Items] |  |  |  |
Percentage of weighted average cost of capital |  | 0.121 | 0.136 |

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- Definition Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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