Legal And Regulatory Matters (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Loss Contingencies [Line Items]
Life expectancy period			6 months
Potential litigation settlement			$ 90,000
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		$ 55,800
Potential litigation settlement	90,000		90,000
Net costs incurred	$ 2,100	$ 1,200	$ 4,200	$ 3,500