Note 6 - Mortgage and Other Indebtedness - Schedule of Debt Balance (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
		Jul. 31, 2021	Dec. 31, 2021		Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Balance outstanding			$ 180,097			$ 122,977
Unamortized deferred financing costs			(1,115)			(917)
Total Mortgage and Other Indebtedness			$ 178,982			$ 122,060
Basis Term Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Jan. 01, 2023
Rate Type	[1]		Floating
Interest Rate	[2]		6.125%
Interest Rate			6.125%			6.125%	6.125%
Balance outstanding			$ 66,811			$ 66,439
Basis Preferred Interest [Member]
Debt Instrument [Line Items]
Maturity Date	[3],[4]		Jan. 01, 2023
Rate Type	[4]		Fixed
Interest Rate	[2],[4],[5]		14.00%
Balance outstanding	[4]		$ 8,560			11,434
MVB Term Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[6]		Dec. 27, 2022
Rate Type			Fixed
Interest Rate	[2]		6.75%
Balance outstanding			$ 3,934			4,277
Hollinswood Shopping Center Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Dec. 01, 2024
Rate Type	[7]		LIBOR + 2.25%
Interest Rate	[2]		4.06%
Balance outstanding			$ 13,070			11,670
Avondale Shops Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Jun. 01, 2025
Rate Type			Fixed
Interest Rate	[2]		4.00%
Balance outstanding			$ 3,097			3,205
Vista Shops at Golden Mile Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[8]		Jun. 24, 2023
Rate Type	[8]		Fixed
Interest Rate	[2],[8]		3.83%
Interest Rate					3.83%
Balance outstanding	[8]		$ 11,661			8,902
Total Mortgage and Other Indebtedness					$ 11,700
Brookhill Azalea Shopping Center Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Jan. 31, 2025
Rate Type			LIBOR + 2.75%
Interest Rate	[2]		2.85%
Balance outstanding			$ 9,034			9,432
Lamar Station Plaza East Loan [Member]
Debt Instrument [Line Items]
Maturity Date		Jul. 31, 2022	Jul. 17, 2022	[9]
Rate Type	[10]		LIBOR + 3.00%
Interest Rate	[2]		4.00%
Balance outstanding			$ 3,507			3,446
Cromwell Field Land Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[11]		Jan. 10, 2023
Rate Type	[11]		Fixed
Interest Rate	[2],[11]		6.75%
Balance outstanding	[11]					1,415
First Paycheck Protection Program Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[12]		Apr. 20, 2022
Rate Type			Fixed
Interest Rate	[2]		1.00%
Balance outstanding						757
Second Paycheck Protection Program Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[13]		Mar. 18, 2026
Rate Type			Fixed
Interest Rate	[2]		1.00%
Lamont Street Preferred Interest Loan [Member]
Debt Instrument [Line Items]
Maturity Date	[14]		Sep. 30, 2023
Rate Type	[14]		Fixed
Interest Rate	[2],[14]		13.50%
Balance outstanding	[14]		$ 4,498
Highlandtown Village Shopping Center Loan [Member]
Debt Instrument [Line Items]
Maturity Date			May 06, 2023
Rate Type			Fixed
Interest Rate	[2]		4.13%
Balance outstanding			$ 5,364
Cromwell Field Shopping Center Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Nov. 15, 2022
Rate Type	[15]		LIBOR + 5.40%
Interest Rate	[2]		5.90%
Balance outstanding			$ 12,249
Cromwell Field Shopping Center Mezzanine Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Nov. 15, 2022
Rate Type			Fixed
Interest Rate	[2]		10.00%
Balance outstanding			$ 1,512
Spotswood Valley Square Shopping Center Loan [Member]
Debt Instrument [Line Items]
Maturity Date			Jul. 06, 2023
Rate Type			Fixed
Interest Rate	[2]		4.82%
Balance outstanding			$ 12,100
The Shops at Greenwood Village [Member]
Debt Instrument [Line Items]
Maturity Date			Oct. 10, 2028
Rate Type	[16]		Prime - 0.35%
Interest Rate	[2]		4.08%
Balance outstanding			$ 23,296
MVB Revolver [Member]
Debt Instrument [Line Items]
Maturity Date	[6]		Dec. 27, 2022
Rate Type	[17]		Floating
Interest Rate	[2]		6.75%
Balance outstanding			$ 1,404			$ 2,000

[1] The interest rate for the Basis Term Loan is the greater of (i) LIBOR plus 3.850% per annum and (ii) 6.125% per annum. The Company has entered into an interest rate cap that caps the LIBOR rate on this loan at 3.5%.

[2] At December 31, 2021, the floating rate loans tied to LIBOR were based on the one-month LIBOR rate of 0.1%.

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

[4] The outstanding balance includes approximately $0.8 million and $1.8 million of indebtedness as of December 31, 2021 and 2020, respectively, related to the Multiple Minimum Amount owed to the Preferred Investor as described below under the heading “—Basis Preferred Interest.”

[5] 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 $0.9 million was outstanding at December 31, 2021. The Preferred Investor is entitled to a cumulative annual return of 13.0% on the additional contributions.

[6] In March 2022, the Company entered into a six-month extension on the MVB Term Loan and MVB Revolver (each as defined below) as described under the heading "—MVB Loans."

[7] The Company has entered into an interest rate swap which fixes the interest rate of the loan at 4.06%.

[8] 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.

[9] In July 2021, the Company entered into a modification to the Lamar Station Plaza East loan to extend the maturity date to July 2022 as described below under the heading "—Mortgage Indebtedness".

[10] The interest rate on the Lamar Station Plaza East Loan is LIBOR plus 3.00% per annum with a minimum LIBOR rate of 1.00%.

[11] The Company paid off the remaining principal balance of the Cromwell land loan during the second quarter of 2021.

[12] During the first quarter of 2021, the Company received forgiveness for its PPP Loan (as defined below) as described below under the heading “—PPP Loans.”

[13] During the third quarter of 2021, the Company received forgiveness for its Second PPP Loan (as defined below) as described below under the heading "—PPP Loans."

[14] The outstanding balance includes approximately $0.6 million of indebtedness as of December 31, 2021, related to the Lamont Street Minimum Multiple Amount owed to Lamont Street as described below under the heading "—Lamont Street Preferred Interest."

[15] The interest rate on the Cromwell Field Shopping Center Loan is LIBOR plus 5.40% per annum with a minimum LIBOR rate of 0.50%.

[16] The Company has entered into an interest rate swap which fixes the interest rate of the loan at 4.082%.

[17] The interest rate on the MVB Revolver is the greater of (i) prime rate plus 1.5% and (ii) 6.75%.