Legal And Regulatory Matters (Narrative) (Details)	3 Months Ended
	Mar. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Term to impose monitoring, reporting, certification, oversight, screening, and training	5 years
Accrued legal	$ 1,643,000	$ 1,786,000
Number of other lawsuits | item	3
Number of days given to file amended complaint	30 days
Extension period	14 days
Settlement Agreement [Member]
Loss Contingencies [Line Items]
Litigation settlements		75,000,000
Spottiswood Settlement [Member]
Loss Contingencies [Line Items]
Litigation settlements	$ 500,000
State Of Illinois [Member]
Loss Contingencies [Line Items]
Accrued legal		$ 1,100,000
U.S. v. VITAS [Member]
Loss Contingencies [Line Items]
Litigation settlement, after tax			$ 55,800,000
Litigation settlements			$ 90,000,000
Net costs incurred	$ 0			$ 2,200,000