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Note 6 - Other Real Estate Investments (Details Textual) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2017 USD ($)
Equity Method Investments | $ 560,068 |  | $ 483,861
Income (Loss) from Equity Method Investments, Total | $ 16,913 | $ 14,733 |
Preferred Equity Investments [Member] |  |  |
Number of Real Estate Properties | 319 |  |
Income (Loss) from Equity Method Investments, Total | $ 10,000 | $ 3,800 |
Equity Method Investment, Realized Gain (Loss) on Disposal, Total | $ 4,700 |  |
Preferred Equity Investments [Member] | Leased Properties [Member] |  |  |
Number of Real Estate Properties | 306 |  |
Preferred Equity Investments [Member] | Maximum Exposure [Member] |  |  |
Equity Method Investments | $ 188,200 |  |

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