Schedule III - Real Estate and Accumulated Depreciation - Summary of Properties (Details) $ in Thousands	Dec. 31, 2024 USD ($) ft²	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	2,352,528
Initial cost to the Company, Land	$ 60,817
Initial cost to the Company, Building and Improvements	238,475
Subsequent cost capitalized	4,566
Gross amount, Land	56,897
Gross amount, Building and Improvements	246,961
Gross amount, Total	303,858	$ 368,165	$ 364,110
Accumulated depreciation	$ 131,698	$ 166,489	$ 157,468
Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Brickyard Plaza
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	227,598
Initial cost to the Company, Land	$ 6,465
Initial cost to the Company, Building and Improvements	29,119
Subsequent cost capitalized	(1,125)
Gross amount, Land	6,465
Gross amount, Building and Improvements	27,994
Gross amount, Total	34,459
Accumulated depreciation	$ 15,527
Brickyard Plaza | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Brickyard Plaza | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Carll's Corner
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	116,532
Initial cost to the Company, Land	$ 3,034
Initial cost to the Company, Building and Improvements	15,293
Subsequent cost capitalized	(13,357)
Gross amount, Land	220
Gross amount, Building and Improvements	4,750
Gross amount, Total	4,970
Accumulated depreciation	$ 3,364
Carll's Corner | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Carll's Corner | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Coliseum Marketplace
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	106,648
Initial cost to the Company, Land	$ 2,924
Initial cost to the Company, Building and Improvements	14,416
Subsequent cost capitalized	(2,383)
Gross amount, Land	3,586
Gross amount, Building and Improvements	11,371
Gross amount, Total	14,957
Accumulated depreciation	$ 7,168
Coliseum Marketplace | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Coliseum Marketplace | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Fairview Commons
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	50,485
Initial cost to the Company, Land	$ 858
Initial cost to the Company, Building and Improvements	3,568
Subsequent cost capitalized	666
Gross amount, Land	858
Gross amount, Building and Improvements	4,234
Gross amount, Total	5,092
Accumulated depreciation	$ 2,145
Fairview Commons | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Fairview Commons | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Fieldstone Marketplace
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	193,836
Initial cost to the Company, Land	$ 5,229
Initial cost to the Company, Building and Improvements	21,440
Subsequent cost capitalized	(1,705)
Gross amount, Land	5,167
Gross amount, Building and Improvements	19,797
Gross amount, Total	24,964
Accumulated depreciation	$ 11,203
Fieldstone Marketplace | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Fieldstone Marketplace | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Gold Star Plaza
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	71,720
Initial cost to the Company, Land	$ 1,644
Initial cost to the Company, Building and Improvements	6,519
Subsequent cost capitalized	(142)
Gross amount, Land	1,644
Gross amount, Building and Improvements	6,377
Gross amount, Total	8,021
Accumulated depreciation	$ 3,165
Gold Star Plaza | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Gold Star Plaza | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Golden Triangle
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	202,790
Initial cost to the Company, Land	$ 2,320
Initial cost to the Company, Building and Improvements	9,713
Subsequent cost capitalized	12,754
Gross amount, Land	2,320
Gross amount, Building and Improvements	22,467
Gross amount, Total	24,787
Accumulated depreciation	$ 12,784
Golden Triangle | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Golden Triangle | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Hamburg Square
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	102,058
Initial cost to the Company, Land	$ 1,153
Initial cost to the Company, Building and Improvements	4,678
Subsequent cost capitalized	6,635
Gross amount, Land	1,153
Gross amount, Building and Improvements	11,313
Gross amount, Total	12,466
Accumulated depreciation	$ 5,615
Hamburg Square | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Hamburg Square | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Oregon Avenue
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	0
Initial cost to the Company, Land	$ 2,247
Initial cost to the Company, Building and Improvements	18,616
Subsequent cost capitalized	(18,023)
Gross amount, Land	2,141
Gross amount, Building and Improvements	699
Gross amount, Total	2,840
Accumulated depreciation	$ 202
Oregon Avenue | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Oregon Avenue | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Patuxent Crossing
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	264,068
Initial cost to the Company, Land	$ 14,849
Initial cost to the Company, Building and Improvements	18,445
Subsequent cost capitalized	1,835
Gross amount, Land	13,211
Gross amount, Building and Improvements	21,918
Gross amount, Total	35,129
Accumulated depreciation	$ 12,313
Patuxent Crossing | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Patuxent Crossing | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Pine Grove Plaza
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	79,306
Initial cost to the Company, Land	$ 2,010
Initial cost to the Company, Building and Improvements	6,489
Subsequent cost capitalized	1,218
Gross amount, Land	1,622
Gross amount, Building and Improvements	8,095
Gross amount, Total	9,717
Accumulated depreciation	$ 4,154
Pine Grove Plaza | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Pine Grove Plaza | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
South Philadelphia parcels
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	0
Initial cost to the Company, Land	$ 2,128
Initial cost to the Company, Building and Improvements	0
Subsequent cost capitalized	0
Gross amount, Land	2,128
Gross amount, Building and Improvements	0
Gross amount, Total	2,128
Accumulated depreciation	$ 0
Southington Center
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	155,842
Initial cost to the Company, Land	$ 0
Initial cost to the Company, Building and Improvements	11,834
Subsequent cost capitalized	1,671
Gross amount, Land	0
Gross amount, Building and Improvements	13,505
Gross amount, Total	13,505
Accumulated depreciation	$ 6,968
Southington Center | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Southington Center | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Timpany Plaza
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 11,527
Gross leasable area | ft²	182,820
Initial cost to the Company, Land	$ 3,412
Initial cost to the Company, Building and Improvements	19,240
Subsequent cost capitalized	(670)
Gross amount, Land	3,368
Gross amount, Building and Improvements	18,614
Gross amount, Total	21,982
Accumulated depreciation	$ 8,663
Timpany Plaza | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Timpany Plaza | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Trexler Mall
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	342,541
Initial cost to the Company, Land	$ 6,932
Initial cost to the Company, Building and Improvements	32,815
Subsequent cost capitalized	12,701
Gross amount, Land	6,932
Gross amount, Building and Improvements	45,516
Gross amount, Total	52,448
Accumulated depreciation	$ 22,400
Trexler Mall | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Trexler Mall | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Washington Center Shoppes
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	157,300
Initial cost to the Company, Land	$ 2,061
Initial cost to the Company, Building and Improvements	7,314
Subsequent cost capitalized	6,857
Gross amount, Land	2,000
Gross amount, Building and Improvements	14,232
Gross amount, Total	16,232
Accumulated depreciation	$ 7,277
Washington Center Shoppes | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Washington Center Shoppes | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Webster Commons
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	98,984
Initial cost to the Company, Land	$ 3,551
Initial cost to the Company, Building and Improvements	18,412
Subsequent cost capitalized	(2,366)
Gross amount, Land	4,082
Gross amount, Building and Improvements	15,515
Gross amount, Total	19,597
Accumulated depreciation	$ 8,503
Webster Commons | Minimum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	3 years
Webster Commons | Maximum
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Depreciation life (in years)	40 years
Other
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Gross leasable area | ft²	0
Initial cost to the Company, Land	$ 0
Initial cost to the Company, Building and Improvements	564
Subsequent cost capitalized	0
Gross amount, Land	0
Gross amount, Building and Improvements	564
Gross amount, Total	564
Accumulated depreciation	$ 247