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Acquisition of Business (Narrative) (Details) - Infinity [Member] - USD ($) $ in Millions |  | 3 Months Ended
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Jul. 02, 2018 | Mar. 31, 2019
Business Acquisition [Line Items] |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Legal Accruals, Other LIabilities and Tax Related Balance |  | $ 0.9
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill |  | $ 0.9
Secured Debt [Member] |  |
Business Acquisition [Line Items] |  |
Business Combination, Consideration Transferred, Liabilities Incurred | $ 250.0 |

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