Legal And Regulatory Matters (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) item	Sep. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Life expectancy period			6 months
Potential litigation settlement			$ 90,000,000
Number of other lawsuits | item			3
Period in which the opportunity to file amended compliant addressing the deficiencies in the claim			30 days
Extension period			14 days
Proceeding time period for law suite			4 years
U.S. v. VITAS [Member]
Loss Contingencies [Line Items]
Potential litigation settlement, after tax	$ 55,800,000		$ 55,800,000
Potential litigation settlement	90,000,000		90,000,000
Net costs incurred	$ 935,000	$ 599,000	$ 5,200,000	$ 4,100,000