Note 3 - Real Estate - Summary of Geographic Concentration of Properties (Parenthetical) (Details) - Geographic Concentration Risk [Member] - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Spotswood Valley Square Shopping Center [Member]
Concentration Risk [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 600
Rental Income [Member]
Concentration Risk [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 9,511	$ 10,208

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details