Discontinued Operations - Net Assets Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets:
Due premiums	$ 5,084	$ 8,041
Other receivables	265,818	287,765
Deferred acquisition costs	16,864	17,037
Total assets held for sale	287,766	312,843
Liabilities:
Unearned and advance premiums	3,559	806
Policy claims and other benefits payable	11,010	12,309
Risk sharing payable	26,754	23,837
Current and deferred income taxes payable	8,466	13,604
Other	(229)	479
Total liabilities held for sale	49,560	51,035
Net assets	238,206	261,808
Centers for Medicare and Medicaid Services [Member]
Assets:
Other receivables	195,000	193,000
Drug Manufacturers [Member]
Assets:
Other receivables	$ 71,000	$ 95,000