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Note 4 - Investments In and Advances to Real Estate Joint Ventures (Details Textual) ft² in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) ft² | Sep. 30, 2017 USD ($) ft² | Sep. 30, 2016 USD ($) | Dec. 31, 2016 ft²
Gross Leasable Area | ft² | [1] | 2,030 | 2,030 |  |
Business Combination, Consideration Transferred |  |  | $ 546,959 |  |
Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member] | CANADA |  |  |  |  |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax |  | $ (4,800) | $ (4,800) |  |
All Equity Method Investments [Member] |  |  |  |  |
Gross Leasable Area | ft² |  | 24,600 | 24,600 |  | 26,200
Kim Pru and Kim Pru II [Member] |  |  |  |  |
Number of Joint Ventures |  | 4 | 4 |  |
Number Of Accounts |  | 4 | 4 |  |
Kim Pru [Member] |  |  |  |  |
Number of Joint Ventures |  | 3 | 3 |  |
Real Estate Joint Ventures [Member] |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | $ 959,200 |
Real Estate Joint Ventures [Member] | Operating Properties [Member] |  |  |  |  |
Number of Real Estate Properties, Interest Disposed of or Transferred |  |  | 6 | 39 |
Equity Method Investment, Sales Price |  | $ 49,300 | $ 49,300 |  |
Equity Method Investment, Realized Gain (Loss) on Disposal |  |  | $ 100 | $ 143,300 |
Number of Real Estate Properties, Remaining Interest Acquired |  |  | 3 | 6 |
Business Combination, Consideration Transferred |  |  | $ 320,100 | $ 486,200 |
Real Estate Joint Ventures [Member] | Development Properties [Member] |  |  |  |  |
Number of Real Estate Properties, Remaining Interest Acquired |  |  |  | 1 |
[1] | Gross leasable area ("GLA")

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