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v3.19.2

Investments (Narrative) (Details) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2018 GBP (£) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 GBP (£) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 GBP (£)
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Money Market Investments | $ 71,000,000.0 |  |  |  | $ 71,000,000.0 |  |  | $ 75,500,000 |
Payments to Acquire Marketable Securities |  |  |  |  | 7,499,000 | $ 0 |  |  |
Gain on marketable equity securities, net |  |  |  |  | 9,700,000 | 37,300,000 |  |  |
Proceeds from sales of marketable equity securities |  |  |  |  | 17,162,000 | 66,741,000 |  |  |
Gain on sale of equity affiliate | 0 |  | $ 0 |  | 28,994,000 | 0 |  |  |
Equity Securities without Readily Determinable Fair Value | 34,500,000 |  |  |  | 34,500,000 |  |  | $ 30,600,000 |
Graham Healthcare Group [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Revenue from Related Parties | $ 2,300,000 |  | $ 3,300,000 |  | $ 4,600,000 | $ 7,000,000.0 |  |  |
Intersection Holdings [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 11.00% |  |  |  | 11.00% |  | 11.00% |  |
Residential Home Health Illinois [Member] | Graham Healthcare Group [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 40.00% |  |  |  | 40.00% |  | 40.00% |  |
Residential Hospice Illinois [Member] | Graham Healthcare Group [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 42.50% |  |  |  | 42.50% |  | 42.50% |  |
Residential Healthcare Michigan hospital joint venture [Member] | Graham Healthcare Group [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 40.00% |  |  |  | 40.00% |  | 40.00% |  |
Celtic Healthcare Allegheny Health Network Joint Venture [Member] | Graham Healthcare Group [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 40.00% |  |  |  | 40.00% |  | 40.00% |  |
Gimlet Media [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Gain on sale of equity affiliate |  | $ 29,000,000.0 |  |  |  |  |  |  |
Proceeds from Sale of Equity Method Investments |  | $ 33,500,000 |  |  |  |  |  |  |
York Joint Venture [Member] | KIHL [Member] |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage | 45.00% |  |  |  | 45.00% |  | 45.00% |  |
Loan commitment to affiliate | £ |  |  |  |  |  |  | £ 25,000,000 |  |
Advances to Affiliate | £ |  |  |  |  |  |  | £ 22,000,000 |  | £ 16,000,000
Payments to Fund Long-term Loans to Related Parties | £ |  |  |  | £ 6,000,000 |  |  |  |  |
Loan Receivable, Payment Terms |  |  |  |  | 25 years |  |  |  |
Loan Receivable Fixed Interest Rate |  |  |  |  | 7.00% |  |  |  |

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