Schedule III - Real Estate and Accumulated Depreciation - Summary of Real Estate and Accumulated Depreciation (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 104,542
Initial Cost to Company, Land	34,350
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	135,744
Gross Amount at Which Carried at Close of Period, Land	34,350
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	135,744
Gross Amount at Which Carried at Close of Period, Total	170,094
Accumulated Depreciation	(116)
Avondale Shops [Member] | Washington, D.C. [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	4,900
Initial Cost to Company, Land	1,775
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	6,591
Gross Amount at Which Carried at Close of Period, Land	1,775
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	6,591
Gross Amount at Which Carried at Close of Period, Total	8,366
Accumulated Depreciation	$ (5)
Date of Construction/Renovation	2010
Date Acquired	2019
Brookhill Azalea Shopping Center [Member] | Richmond, VA [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,650
Initial Cost to Company, Land	1,344
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	15,554
Gross Amount at Which Carried at Close of Period, Land	1,344
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	15,554
Gross Amount at Which Carried at Close of Period, Total	16,898
Accumulated Depreciation	$ (3)
Date of Construction/Renovation	2012
Date Acquired	2019
Coral Hills Shopping Center [Member] | Capitol Heights, MD [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 10,504
Initial Cost to Company, Land	2,186
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	14,317
Gross Amount at Which Carried at Close of Period, Land	2,186
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	14,317
Gross Amount at Which Carried at Close of Period, Total	16,503
Accumulated Depreciation	$ (23)
Date of Construction/Renovation	2012
Date Acquired	2019
Crestview Square [Member] | Landover Hills, MD [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 11,724
Initial Cost to Company, Land	2,853
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	15,717
Gross Amount at Which Carried at Close of Period, Land	2,853
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	15,717
Gross Amount at Which Carried at Close of Period, Total	18,570
Accumulated Depreciation	$ (18)
Date of Construction/Renovation	2012
Date Acquired	2019
Dekalb Plaza [Member] | East Norriton, PA [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 13,302
Initial Cost to Company, Land	7,570
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	17,470
Gross Amount at Which Carried at Close of Period, Land	7,570
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	17,470
Gross Amount at Which Carried at Close of Period, Total	25,040
Accumulated Depreciation	$ (14)
Date of Construction/Renovation	2015
Date Acquired	2019
Hollinswood Shopping Center [Member] | Baltimore, MD [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 12,452
Initial Cost to Company, Land	5,897
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	15,025
Gross Amount at Which Carried at Close of Period, Land	5,897
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	15,025
Gross Amount at Which Carried at Close of Period, Total	20,922
Accumulated Depreciation	$ (13)
Date of Construction/Renovation	2018
Date Acquired	2019
Midtown Colonial [Member] | Williamsburg, VA [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 6,270
Initial Cost to Company, Land	3,946
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	9,970
Gross Amount at Which Carried at Close of Period, Land	3,946
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	9,970
Gross Amount at Which Carried at Close of Period, Total	13,916
Accumulated Depreciation	$ (8)
Date of Construction/Renovation	2018
Date Acquired	2019
Midtown Lamonticello [Member] | Williamsburg, VA [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 9,707
Initial Cost to Company, Land	3,108
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	12,659
Gross Amount at Which Carried at Close of Period, Land	3,108
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	12,659
Gross Amount at Which Carried at Close of Period, Total	15,767
Accumulated Depreciation	$ (5)
Date of Construction/Renovation	2019
Date Acquired	2019
Vista Shops at Golden Mile [Member] | Fredrick, MD [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 14,544
Initial Cost to Company, Land	4,342
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	10,219
Gross Amount at Which Carried at Close of Period, Land	4,342
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	10,219
Gross Amount at Which Carried at Close of Period, Total	14,561
Accumulated Depreciation	$ (12)
Date of Construction/Renovation	2008
Date Acquired	2019
West Broad Commons [Member] | Richmond, VA [Member] | Shopping Center [Member]
Real Estate And Accumulated Depreciation [Line Items]
Encumbrances	$ 11,489
Initial Cost to Company, Land	1,329
Initial Cost to Company, Building and improvements and intangible lease assets and liabilities	18,222
Gross Amount at Which Carried at Close of Period, Land	1,329
Gross Amount at Which Carried at Close of Period, Building and improvements and intangible lease assets and liabilities	18,222
Gross Amount at Which Carried at Close of Period, Total	19,551
Accumulated Depreciation	$ (15)
Date of Construction/Renovation	2017
Date Acquired	2019