Note 7 - Mortgage and Other Indebtedness - Schedule of Debt Balance (Parenthetical) (Details) - USD ($) $ in Thousands				1 Months Ended	3 Months Ended
		Feb. 08, 2024	Dec. 27, 2019	Dec. 31, 2019	Mar. 31, 2024		Dec. 31, 2023	May 05, 2023	May 01, 2023	Mar. 31, 2023	Nov. 23, 2022	Aug. 01, 2022
Debt Instrument [Line Items]
Exit Fees Outstanding					$ 100		$ 100
Mezzanine Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate					12.00%
Debt Instrument, interest rate increase each year					1.00%
Interest Rate Swap [Member] | Hollinswood Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate					4.06%
Current Interest Rate [Member] | Mezzanine Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate					5.00%
Capitalized Interest Rate [Member] | Mezzanine Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate					7.00%
Basis Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 0		21
Debt instrument variable rate	[1]				8.62%
Maturity date					Jul. 01, 2024
Interest rate of loan					8.62%
Basis Term Loan [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument variable rate				6.125%	6.125%
Basis Term Loan [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Interest rate of loan					8.62%					8.62%
Basis Term Loan [Member] | Interest Rate Cap [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			6.125%
Basis Term Loan [Member] | SOFR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate				3.97%	3.97%
Basis Term Loan [Member] | SOFR [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			3.97%
Debt instrument variable rate											4.65%	3.50%
Vista Shops at Golden Mile Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 101		9
Debt instrument variable rate	[1],[2]				6.90%
Maturity date		Feb. 08, 2029			Feb. 08, 2029	[2]
Vista Shops at Golden Mile Loan [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate		6.90%
Crestview Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 48		53
Debt instrument variable rate	[1]				7.83%
Maturity date					Sep. 29, 2026
Lamar Station Plaza West Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 90		73
Debt instrument variable rate	[1]				5.67%
Maturity date					Dec. 10, 2027
Highlandtown Village Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 36		38
Debt instrument variable rate	[1]				6.085%
Maturity date					May 10, 2028
Highlandtown Village Shopping Center Loan [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate								6.085%
Cromwell Field Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 56		60
Debt instrument variable rate	[1]				6.71%
Maturity date					Dec. 22, 2027
Midtown Row Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 18		19
Debt instrument variable rate	[1]				6.48%
Maturity date					Dec. 01, 2027
Greenwood Village [Member]
Debt Instrument [Line Items]
Interest rate of loan									5.85%
Greenwood Village [Member] | SOFR [Member]
Debt Instrument [Line Items]
Interest rate of loan									5.85%
Coral Hills Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 184		189
Debt instrument variable rate	[1]				6.95%
Maturity date					Oct. 31, 2033
West Broad Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 86		88
Debt instrument variable rate	[1]				7.00%
Maturity date					Dec. 21, 2033
The Shops at Greenwood Village [Member]
Debt Instrument [Line Items]
Debt instrument net of discount					$ 76		$ 80
Debt instrument variable rate	[1]				5.85%
Maturity date					Oct. 10, 2028

[1] Interest rates are as of March 31, 2024.

[2] On February 8, 2024, the Company refinanced the Vista Shops at Golden Mile Loan to extend the maturity date to February 8, 2029 and entered into an interest rate swap which fixes the interest rate of the new loan at 6.90%.