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Fair Value Of Financial Instruments (Narrative) (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2018 USD ($)
Fair Value Disclosures [Abstract] |  |
Transfers of financial assets from Level 2 to Level 1 | $ 0.0 | $ 0.6
Transfers of financial assets from Level 1 to Level 2 | $ 0.1 | 0.7
Transfers of financial assets into Level 3 |  | 0.0
Transfers of financial assets out of Level 3 |  | $ 0.0
Stated interest rate | 4.25% | 4.25%
Maturity date |  | Dec. 31, 2024

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