Note 6 - Mortgage and Other Indebtedness - Schedule of Debt Balance (Parenthetical) (Details) - USD ($) $ in Thousands				1 Months Ended		3 Months Ended	6 Months Ended
		Aug. 01, 2022	Dec. 27, 2019	Jul. 31, 2021	Jun. 30, 2020	Oct. 17, 2022	Jun. 30, 2022		Dec. 31, 2021	Oct. 06, 2021	Mar. 31, 2021
Debt Instrument [Line Items]
Debt instrument net of discount							$ 600		$ 1,000
Balance outstanding							$ 180,032		180,097
MVB Revolver [Member]
Debt Instrument [Line Items]
Debt instrument variable rate	[1]						6.75%
Balance outstanding							$ 1,076		1,404
Maturity Date	[2]						Jun. 27, 2023
Sub-OP [Member]
Debt Instrument [Line Items]
Preferred investor, additional capital contribution					$ 2,900
Preferred investor, additional capital contribution outstanding							$ 900
LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							1.79%
Prime Rate [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate										0.35%
Prime Rate [Member] | MVB Revolver [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							1.50%
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							$ 187		373
Debt instrument variable rate	[1]						6.125%
Balance outstanding							$ 66,997		66,811
Maturity Date							Jan. 01, 2023
Basis Term Loan [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			6.125%
Basis Term Loan [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							3.97%
Basis Term Loan [Member] | LIBOR [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate		3.50%	3.97%
Basis Preferred Interest [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 37		75
Debt instrument variable rate	[3]						14.00%
Balance outstanding	[4]						$ 8,111		8,560
Maturity Date	[5]						Jan. 01, 2023
Vista Shops at Golden Mile Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 25		39
Debt instrument variable rate							3.83%	[1],[6]			3.83%
Balance outstanding	[6]						$ 11,606		11,661
Maturity Date	[6]						Jun. 24, 2023
Vista Shops at Golden Mile Loan [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Maturity Date							Jan. 25, 2021
Vista Shops at Golden Mile Loan [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							2.50%
Lamar Station Plaza East Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 1		8
Debt instrument variable rate	[1]						4.79%
Balance outstanding							$ 3,515		3,507
Maturity Date	[7]						Oct. 17, 2022
Lamar Station Plaza East Loan [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maturity Date						Oct. 17, 2022
Lamar Station Plaza East Loan [Member] | Mortgage Loan [Member]
Debt Instrument [Line Items]
Maturity Date							Jul. 17, 2022
Lamar Station Plaza East Loan [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							3.00%
Lamar Station Plaza East Loan [Member] | LIBOR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							1.00%
Lamont Street Preferred Interest [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 48		67
Debt instrument variable rate	[1],[8]						13.50%
Balance outstanding	[8]						$ 4,256		4,498
Maturity Date	[8]						Sep. 30, 2023
Highlandtown Village Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 29		46
Debt instrument variable rate	[1]						4.13%
Balance outstanding							$ 5,304		5,364
Maturity Date							May 06, 2023
Cromwell Field Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 62		144
Debt instrument variable rate	[1]						7.19%
Balance outstanding							$ 12,331		12,249
Maturity Date							Nov. 15, 2022
Cromwell Field Shopping Center Loan [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							5.40%
Cromwell Field Shopping Center Loan [Member] | LIBOR [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument variable rate							0.50%
Cromwell Field Shopping Center Mezzanine Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 8		18
Debt instrument variable rate	[1]						10.00%
Balance outstanding							$ 1,522		1,512
Maturity Date							Nov. 15, 2022
Spotswood Valley Square Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 63		94
Debt instrument variable rate	[1]						4.82%
Balance outstanding							$ 11,975		12,100
Maturity Date							Jul. 06, 2023
Hollinswood Loan [Member] | Interest Rate Cap [Member]
Debt Instrument [Line Items]
Debt instrument variable rate			4.06%
Brookhill Azalea Shopping Center Loan [Member]
Debt Instrument [Line Items]
Debt instrument variable rate	[1]						4.54%
Balance outstanding							$ 8,840		9,034
Maturity Date							Jan. 31, 2025
Basis Preferred Interest Minimum Multiple Amount [Member]
Debt Instrument [Line Items]
Balance outstanding							$ 300		800
Other Capital Contribution [Member] | Sub-OP [Member]
Debt Instrument [Line Items]
Preferred units, cumulative annual return					13.00%
Lamar Station Plaza East [Member]
Debt Instrument [Line Items]
Maturity Date				Jul. 31, 2022
Lamar Station Plaza East [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Maturity Date						Oct. 17, 2022
Lamont Street Minimum Multiple Amount [Member]
Debt Instrument [Line Items]
Balance outstanding							400
The Shops at Greenwood Village [Member]
Debt Instrument [Line Items]
Debt instrument net of discount							$ 105		114
Debt instrument variable rate	[1]						4.08%
Balance outstanding							$ 23,035		$ 23,296
Maturity Date							Oct. 10, 2028

[1] At June 30, 2022, the floating rate loans tied to LIBOR were based on the one-month LIBOR rate of 1.79%.

[2] In March 2022, the Company entered into a six-month extension on the MVB Term Loan and the MVB Revolver as described under the heading “—MVB Loans.”

[3] In June 2020, the Preferred Investor made additional capital contributions of approximately $2.9 million as described below under the heading “—Basis Preferred Interest” of which approximately $0.9 million was outstanding at June 30, 2022. The Preferred Investor is entitled to a cumulative annual return of 13.0% on the additional contributions.

[4] The outstanding balance includes approximately $0.3 million and $0.8 million of indebtedness as of June 30, 2022 and December 31, 2021, respectively, related to the Minimum Multiple Amount (as defined below) owed to the Preferred Investor as described below under the heading “—Basis Preferred Interest”.

[5] If the Basis Term Loan is paid in full earlier than its maturity date, the Basis Preferred Interest in the Sub-OP will mature at that time.

[6] The Company completed the refinance of this loan in March 2021 as described below under the heading “—Mortgage Indebtedness”. The prior loan matured on January 25, 2021 and carried an interest rate of LIBOR plus 2.5% per annum.

[7] As of June 30, 2022, the maturity date of the Lamar Station Plaza East loan was July 17, 2022. In August 2022, the Company entered into a modification to the Lamar Station Plaza East loan to extend the maturity date to October 17, 2022, effective July 17, 2022, as described below under the heading “—Mortgage Indebtedness”.

[8] The outstanding balance includes approximately $0.4 million of indebtedness as of June 30, 2022 related to the Lamont Street Minimum Multiple Amount (as defined below) owed to Lamont Street (as defined below) as described below under the heading “—Lamont Street Preferred Interest”.