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Note 14 - Noncontrolling Interests (Details Textual) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2007 USD ($) shares | Dec. 31, 2006 USD ($) $ / shares shares | Sep. 20, 2017
Redeemable Non-controlling Interest, Issuance Amount, Fair Value Remeasurement | $ 1,000 |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 48,877 | $ 16,667 | $ 66,163 |  |  |
Redeemable Noncontrolling Interest, Equity, Carrying Amount | $ 16,143 | 86,953 | $ 86,709 |  |  |
PUERTO RICO |  |  |  |  |  |
Number of Real Estate Properties | 7 |  |  |  |  | 7
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | $ 233,000 |  |  |  |  |
Redeemable Noncontrolling Interest, Equity, Carrying Amount | 5,200 | 86,200 |  |  |  |
PUERTO RICO | Fair Market Value Adjustments [Member] |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | $ 15,100 |  |  |  |  |
Preferred A Units [Member] |  |  |  |  |  |
Non-controlling Interest, Units Redeemed | shares | 79,642,697 |  |  |  |  |
Payments for Repurchase of Redeemable Noncontrolling Interest | $ 79,900 |  |  |  |  |
Payments for Repurchase of Redeemable Noncontrolling Interest, Accrued Preferred Return | $ 400 |  |  |  |  |
Non-controlling Interest, Par Value | $ / shares | $ 1 |  |  |  |  |
Non-controlling Interest, Annual Return | 5.00% |  |  |  |  |
Non-convertible Units [Member] | PUERTO RICO |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | $ 158,600 |  |  |  |  |
Convertible Units [Member] |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  | $ 5,300 |
Non-controlling Interest, Units | shares |  |  |  |  | 138,015 |
Convertible Units [Member] | Fair Market Value Adjustments [Member] |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance |  |  |  |  | $ 300 |
Convertible Units [Member] | PUERTO RICO |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 45,800 |  |  |  |  |
Premiums [Member] | PUERTO RICO |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | $ 13,500 |  |  |  |  |
Class B Units [Member] |  |  |  |  |  |
Non-controlling Interest, Units Redeemed | shares | 25,000 |  |  | 30,000 |  |
Non-controlling Interest, Par Value | $ / shares |  |  |  |  | $ 37.24 |
Redeemable Noncontrolling Interest, Equity, Carrying Amount | $ 25,400 | $ 26,500 |  |  |  |
Non-controlling Interest, Units Issued | shares |  |  |  |  | 647,758 |
Redeemable Units to Company Common Stock, Ratio |  |  |  |  | 1 |
Non-controlling Interest, Cumulative Par Value | $ 900 |  |  | $ 1,100 |  |
KIM Lincoln, LLC [Member] |  |  |  |  |  |
Ownership Interest in Joint Venture, Percentage | 90.00% |  |  |  |  |
Lincoln Square Property, LP [Member] |  |  |  |  |  |
Ownership Interest in Joint Venture, Percentage | 10.00% |  |  |  |  |

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