Fair Value Of Financial Instruments (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)
Fair Value Disclosures [Abstract]
Transfers of financial assets from Level 2 to Level 1	$ 0.3	$ 1.5
Transfers of financial assets from Level 1 to Level 2	$ 3.7	6.2
Transfers, Into Level 3		$ 0.5
Stated interest rate	4.25%	4.25%
Maturity date		Dec. 31, 2024