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Note 17 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 03, 2021 | Jul. 15, 2021 | Apr. 15, 2021 | Sep. 30, 2021 | Aug. 31, 2021 | Dec. 31, 2020 | Feb. 28, 2020
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  | $ 0.01 |  | $ 0.01 |
Weingarten Realty Investors [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Per Each Acquired Company Share (in shares) | 1.408 | 1.408 | 1.408 |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 179,919,880 |  |  |  |  |  |
ATM Program [Member] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  | $ 0.01 |  |
Sales of Stock Maximum Sales Price |  |  |  |  | $ 500.0 |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  | 3,515,500 |  |  |
Proceeds from Issuance of Common Stock, Net |  |  |  | $ 76.9 |  |  |
Common Stock Available for Issuance, Value |  |  |  | $ 422.4 |  |  |
Share Repurchase Program [Member] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  |  |  | $ 0.01
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  | $ 300.0
Stock Repurchased During Period, Shares (in shares) |  |  |  | 0 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  |  | $ 224.9 |  |  |

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