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Business Combinations (Narrative) (Details) - USD ($)				3 Months Ended		6 Months Ended		12 Months Ended
Business Combinations (Narrative) (Details) - USD ($)	Jan. 06, 2019	Nov. 13, 2018	Jul. 06, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019	Oct. 15, 2018
Business Combinations [Line Items]
Income (loss) from operations				$ 178,752,000	$ 146,273,000	$ 329,339,000	$ 285,155,000
Amortization of intangible assets				$ 12,052,000	9,199,000	25,488,000	16,154,000
Acquisition related expenses					$ 6,123,000	$ 0	$ 6,123,000
MatrixCare [Member]
Business Combinations [Line Items]
Percentage of acquisition shares		100.00%
Total purchase price of acquisition		$ 750,000,000
Healthcarefirst [Member]
Business Combinations [Line Items]
Percentage of acquisition shares			100.00%
Total purchase price of acquisition			$ 126,300,000
HB Healthcare [Member]
Business Combinations [Line Items]
Percentage of acquisition shares									100.00%
Propeller Health [Member]
Business Combinations [Line Items]
Total purchase price of acquisition	$ 242,900,000
Income (loss) from operations								$ 1,900,000