Discontinued Operations - Net Assets Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets:
Due premiums	$ 3,945	$ 8,840
Other receivables	79,400	118,692
Total assets related to discontinued operations	83,345	127,532
Liabilities:
Risk sharing payable	8,528	8,374
Current and deferred income taxes payable	3,128	3,820
Other	2,068	15,230
Total liabilities related to discontinued operations	13,724	27,424
Net assets	69,621	100,108
Contingent purchase price reserve remaining		3,600
Centers for Medicare and Medicaid Services [Member]
Assets:
Other receivables	65,000	50,000
Drug Manufacturers [Member]
Assets:
Other receivables	$ 14,000	$ 69,000