Note 7 - Mortgage and Other Indebtedness - Schedule of Debt Balance (Parenthetical) (Details) - USD ($) $ in Thousands					1 Months Ended	9 Months Ended
		May 05, 2023	May 01, 2023	Jan. 01, 2023	Dec. 31, 2019	Sep. 30, 2023		Jul. 03, 2023	Dec. 31, 2022	Nov. 23, 2022	Aug. 01, 2022	Oct. 06, 2021
Debt Instrument [Line Items]
Balance outstanding						$ 235,255			$ 269,474
Unamortized deferred financing costs						(1,810)			(1,858)
Mortgage and other indebtedness related to real estate held for sale, net						(233,445)			(267,616)
Exit Fees Outstanding						$ 200			300
Interest Rate Swap [Member] | Hollinswood Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate						4.06%
Basis Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 11			79
Debt instrument variable rate						8.62%
Maturity date						Jan. 01, 2024
Balance outstanding	[1]					$ 35,335			$ 67,086
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%			6.125%
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						$ 0			$ 12
Debt instrument variable rate	[2]					3.83%
Maturity date	[2]					Jun. 24, 2024
Balance outstanding	[2]					$ 11,296			11,478
Crestview Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 60			0
Debt instrument variable rate						7.83%
Maturity date						Sep. 29, 2026
Balance outstanding						$ 11,940
Lamar Station Plaza West Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 78			95
Debt instrument variable rate						5.67%
Maturity date						Dec. 10, 2027
Balance outstanding						$ 18,334			18,317
Lamont Street Preferred Interest [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 0			29
Debt instrument variable rate	[3]					13.50%
Maturity date	[3]					Sep. 30, 2023
Balance outstanding	[3]								4,241
Highlandtown Village Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 40			14
Debt instrument variable rate						4.13%
Debt instrument variable rate	[4]					6.085%
Maturity date		May 10, 2028				May 10, 2028	[4]
Balance outstanding	[4]					$ 8,710			5,241
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						$ 64			77
Debt instrument variable rate						6.71%
Maturity date						Dec. 22, 2027
Balance outstanding						$ 10,400			10,113
Midtown Row Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 22			25
Debt instrument variable rate						6.48%
Maturity date						Dec. 01, 2027
Balance outstanding						$ 75,978			75,975
Greenwood Village [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Interest rate of loan			5.85%
Greenwood Village [Member] | Prime Rate [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate												0.35%
Greenwood Village [Member] | Interest Rate Swap [Member]
Debt Instrument [Line Items]
Interest rate of loan												4.082%
Greenwood Village [Member] | SOFR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			2.85%
Interest rate of loan			5.85%
Greenwood Village [Member] | SOFR [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			2.85%
Spotswood Valley Square Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 0			31
Debt instrument variable rate						4.82%
Maturity date						Jul. 06, 2023
Balance outstanding									11,849
Lamont Street Minimum Multiple Amount [Member]
Debt Instrument [Line Items]
Balance outstanding									300
The Shops at Greenwood Village [Member]
Debt Instrument [Line Items]
Debt instrument net of discount						$ 85			94
Debt instrument variable rate						5.85%
Maturity date						Oct. 10, 2028
Balance outstanding						$ 22,358			$ 22,772

[1] The outstanding balance includes $0.2 million and $0.3 million of exit fees at September 30, 2023 and December 31, 2022, respectively.

[2] On June 28, 2023, the Company entered into an agreement to extend the maturity date of this loan to June 24, 2024.

[3] The outstanding balance includes approximately $0.3 million of indebtedness as of December 31, 2022 related to the Lamont Street Minimum Multiple Amount (as defined below) owed to Lamont Street as described below under the heading “—Lamont Street Preferred Interest.”

[4] On May 5, 2023, the Company refinanced the Highlandtown Village Shopping Center Loan to extend the maturity date to May 10, 2028 and entered into an interest rate swap which fixes the interest rate of the new loan at 6.085% as described below under the heading “—Mortgage Indebtedness”. The prior loan carried an interest rate of 4.13%.