Impairments - Equity Method Investments (Details) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014
Investment Impairments
Other than temporary impairment charge			$ 35,913,000
HCR ManorCare
Investment Impairments
Investment ownership percentage	9.40%	9.40%	9.40%
Other than temporary impairment charge	36,000,000	36,000,000	36,000,000
Carrying value, equity method investments before impairment	75,000,000	75,000,000	75,000,000
Fair value of investment	39,000,000	39,000,000	39,000,000
HCR ManorCare \| Discounted cash flow valuation technique
Fair Value Quantitative Inputs
Discount Rate			13.70%
Carrying value, equity method investments	39,500,000	39,500,000	39,500,000
Minimum \| HCR ManorCare \| Discounted cash flow valuation technique
Investment Impairments
Fair value of investment	35,000,000	35,000,000	35,000,000
Fair Value Quantitative Inputs
Range of revenue growth rate			(0.20%)
Range of occupancy growth rates			(0.30%)
Range of operating expense growth rates			0.60%
Range of earnings multiples			6.0
Maximum \| HCR ManorCare \| Discounted cash flow valuation technique
Investment Impairments
Fair value of investment	$ 44,000,000	$ 44,000,000	$ 44,000,000
Fair Value Quantitative Inputs
Range of revenue growth rate			3.50%
Range of occupancy growth rates			0.20%
Range of operating expense growth rates			2.80%
Range of earnings multiples			7.0

This element represents the carrying amount of equity method investments before making adjustment for the impairment.

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Range of occupancy growth rate, as a percent.

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Range of operating expense growth rate, as a percent.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Fair value portion of investments accounted under the equity method.

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

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Market valuation of entity divided by revenue, used as an input to measure fair value.

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