Note 1 - Business and Organization (Details Textual) $ / shares in Units, $ in Millions	Aug. 03, 2021 USD ($) shares	Apr. 15, 2021 $ / shares shares
Senior Unsecured Notes Assumed in the Weingarten Acquisition [Member]
Noncash or Part Noncash Acquisition, Debt Assumed	$ 1,500.0
Liabilities, Fair Value Adjustment	95.6
Mortgage Debt Assumed in the Weingarten Acquisition [Member]
Noncash or Part Noncash Acquisition, Debt Assumed	317.7
Liabilities, Fair Value Adjustment	$ 11.0
Number of Encumbered Operating Properties	16
Weingarten Realty Investors [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Per Each Acquired Company Share (in shares) | shares		1.408
Business Combination, Consideration Transferred, Cash Per Each Acquired Company Share (in dollars per share) | $ / shares		$ 2.20
Business Combination, Consideration Transferred, Total	$ 4,100.0
Number of Properties Acquired	149
Properties Acquired, Number Held Through Joint Venture Programs	30
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares	179,900,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 3.8
Payments to Acquire Businesses, Including Additional Consideration Relating to Reimbursements	$ 0.3