Discontinued Operations - Major Classes of Assets and Liabilities Held for Sale (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Assets Held For Sale
Less: current portion	$ 663,276
Total Assets Held For Sale, Less Current Portion	335,713
Liabilities Held For Sale
Less: current portion	409,983
Total Liabilities Held For Sale, Less Current Portion	37,301
MCC Business
Assets Held For Sale
Cash and cash equivalents	209,497
Accounts receivable, net	209,496
Short-term and long-term investments	243,496
Property and equipment, net	6,710
Goodwill	211,735
Other intangible assets, net	85,669
Other current and long-term assets	32,386
Total Assets Held For Sale	998,989
Less: current portion	663,276
Total Assets Held For Sale, Less Current Portion	335,713
Liabilities Held For Sale
Accounts payable	4,625
Accrued liabilities	92,170
Medical claims payable	281,419
Other medical liabilities	31,769
Deferred income taxes	15,063
Tax contingencies	5,388
Deferred credits and other long-term liabilities	16,850
Total Liabilities Held For Sale	447,284
Less: current portion	409,983
Total Liabilities Held For Sale, Less Current Portion	37,301
MCC Business | Discontinued Operations, Held-for-sale
Assets Held For Sale
Restricted cash and cash equivalents	95,202
Restricted investments	243,496
Restricted other assets	$ 2,387