Other Operating Expenses (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) item
Other Operating Expenses [Line Items]
Total other operating expenses		$ 9,132	$ 1,300	$ 90,880
Litigation Settlement [Member]
Other Operating Expenses [Line Items]
Total other operating expenses	$ 6,000	6,000	$ 796	84,476
Loss On Sale Of Transportation Equipment [Member]
Other Operating Expenses [Line Items]
Total other operating expenses		$ 2,266		5,266
Program Closure Expenses [Member]
Other Operating Expenses [Line Items]
Total other operating expenses				$ 1,138
Program Closure Expenses [Member] | VITAS [Member]
Other Operating Expenses [Line Items]
Number of programs closed | item				3