Schedule III - Summary of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 516,936
Initial cost to company, Land	1,730,629
Initial cost to company, Buildings and Improvements	3,164,741
Cost Capitalized Subsequent to Acquisition	5,650,817
Gross amount at which carried at close of period, Land	1,726,021
Gross amount at which carried at close of period, Buildings and Improvements	8,820,166
Gross amount at which carried at close of period, Total	10,546,187	[1]	$ 10,104,499	$ 9,422,062	$ 8,582,870
Accumulated Depreciation and Amortization	$ 2,963,519		$ 2,715,817	$ 2,531,095	$ 2,357,692
Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on  which depreciation in latest income statements is computed	50 years
29th Place
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	$ 10,211
Initial cost to company, Buildings and Improvements	18,863
Cost Capitalized Subsequent to Acquisition	11,795
Gross amount at which carried at close of period, Land	10,195
Gross amount at which carried at close of period, Buildings and Improvements	30,674
Gross amount at which carried at close of period, Total	40,869
Accumulated Depreciation and Amortization	17,699
Andorra
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,432
Initial cost to company, Buildings and Improvements	12,346
Cost Capitalized Subsequent to Acquisition	19,203
Gross amount at which carried at close of period, Land	2,432
Gross amount at which carried at close of period, Buildings and Improvements	31,549
Gross amount at which carried at close of period, Total	33,981
Accumulated Depreciation and Amortization	23,774
Assembly Row/Assembly Square Market Place
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	93,252
Initial cost to company, Buildings and Improvements	34,196
Cost Capitalized Subsequent to Acquisition	1,001,514
Gross amount at which carried at close of period, Land	69,421
Gross amount at which carried at close of period, Buildings and Improvements	1,059,541
Gross amount at which carried at close of period, Total	1,128,962
Accumulated Depreciation and Amortization	166,961
Azalea
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	39,902
Initial cost to company, Land	40,219
Initial cost to company, Buildings and Improvements	67,117
Cost Capitalized Subsequent to Acquisition	2,016
Gross amount at which carried at close of period, Land	40,219
Gross amount at which carried at close of period, Buildings and Improvements	69,133
Gross amount at which carried at close of period, Total	109,352
Accumulated Depreciation and Amortization	15,771
Bala Cynwyd
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,565
Initial cost to company, Buildings and Improvements	14,466
Cost Capitalized Subsequent to Acquisition	58,798
Gross amount at which carried at close of period, Land	2,683
Gross amount at which carried at close of period, Buildings and Improvements	74,146
Gross amount at which carried at close of period, Total	76,829
Accumulated Depreciation and Amortization	33,085
Barcroft Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	12,617
Initial cost to company, Buildings and Improvements	29,603
Cost Capitalized Subsequent to Acquisition	9,299
Gross amount at which carried at close of period, Land	12,617
Gross amount at which carried at close of period, Buildings and Improvements	38,902
Gross amount at which carried at close of period, Total	51,519
Accumulated Depreciation and Amortization	10,202
Barracks Road
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	4,363
Initial cost to company, Buildings and Improvements	16,459
Cost Capitalized Subsequent to Acquisition	54,834
Gross amount at which carried at close of period, Land	4,363
Gross amount at which carried at close of period, Buildings and Improvements	71,293
Gross amount at which carried at close of period, Total	75,656
Accumulated Depreciation and Amortization	52,383
Bell Gardens
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,386
Initial cost to company, Land	24,406
Initial cost to company, Buildings and Improvements	85,947
Cost Capitalized Subsequent to Acquisition	8,906
Gross amount at which carried at close of period, Land	24,406
Gross amount at which carried at close of period, Buildings and Improvements	94,853
Gross amount at which carried at close of period, Total	119,259
Accumulated Depreciation and Amortization	27,185
Bethesda Row
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	199,151
Initial cost to company, Land	46,579
Initial cost to company, Buildings and Improvements	35,406
Cost Capitalized Subsequent to Acquisition	183,832
Gross amount at which carried at close of period, Land	44,350
Gross amount at which carried at close of period, Buildings and Improvements	221,467
Gross amount at which carried at close of period, Total	265,817
Accumulated Depreciation and Amortization	110,714
Birch & Broad (formerly known as Falls Plaza)
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	1,798
Initial cost to company, Buildings and Improvements	1,270
Cost Capitalized Subsequent to Acquisition	23,021
Gross amount at which carried at close of period, Land	1,819
Gross amount at which carried at close of period, Buildings and Improvements	24,270
Gross amount at which carried at close of period, Total	26,089
Accumulated Depreciation and Amortization	11,743
Brick Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	24,715
Cost Capitalized Subsequent to Acquisition	82,586
Gross amount at which carried at close of period, Land	4,385
Gross amount at which carried at close of period, Buildings and Improvements	102,916
Gross amount at which carried at close of period, Total	107,301
Accumulated Depreciation and Amortization	68,415
Bristol Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,856
Initial cost to company, Buildings and Improvements	15,959
Cost Capitalized Subsequent to Acquisition	17,177
Gross amount at which carried at close of period, Land	3,856
Gross amount at which carried at close of period, Buildings and Improvements	33,136
Gross amount at which carried at close of period, Total	36,992
Accumulated Depreciation and Amortization	23,331
Brook 35
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,386
Initial cost to company, Land	7,128
Initial cost to company, Buildings and Improvements	38,355
Cost Capitalized Subsequent to Acquisition	5,993
Gross amount at which carried at close of period, Land	7,128
Gross amount at which carried at close of period, Buildings and Improvements	44,348
Gross amount at which carried at close of period, Total	51,476
Accumulated Depreciation and Amortization	13,704
Camelback Colonnade
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	52,658
Initial cost to company, Buildings and Improvements	126,646
Cost Capitalized Subsequent to Acquisition	1,230
Gross amount at which carried at close of period, Land	52,658
Gross amount at which carried at close of period, Buildings and Improvements	127,876
Gross amount at which carried at close of period, Total	180,534
Accumulated Depreciation and Amortization	11,743
Campus Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	16,710
Initial cost to company, Buildings and Improvements	13,412
Cost Capitalized Subsequent to Acquisition	1,010
Gross amount at which carried at close of period, Land	16,710
Gross amount at which carried at close of period, Buildings and Improvements	14,422
Gross amount at which carried at close of period, Total	31,132
Accumulated Depreciation and Amortization	4,284
Chelsea Commons
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,894
Initial cost to company, Land	8,689
Initial cost to company, Buildings and Improvements	19,466
Cost Capitalized Subsequent to Acquisition	9,951
Gross amount at which carried at close of period, Land	8,669
Gross amount at which carried at close of period, Buildings and Improvements	29,437
Gross amount at which carried at close of period, Total	38,106
Accumulated Depreciation and Amortization	11,045
Chesterbrook
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	13,042
Initial cost to company, Buildings and Improvements	24,725
Cost Capitalized Subsequent to Acquisition	8,566
Gross amount at which carried at close of period, Land	13,042
Gross amount at which carried at close of period, Buildings and Improvements	33,291
Gross amount at which carried at close of period, Total	46,333
Accumulated Depreciation and Amortization	2,436
CocoWalk
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	32,513
Initial cost to company, Buildings and Improvements	71,536
Cost Capitalized Subsequent to Acquisition	100,055
Gross amount at which carried at close of period, Land	48,943
Gross amount at which carried at close of period, Buildings and Improvements	155,161
Gross amount at which carried at close of period, Total	204,104
Accumulated Depreciation and Amortization	28,093
Colorado Blvd
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,415
Initial cost to company, Buildings and Improvements	3,964
Cost Capitalized Subsequent to Acquisition	7,604
Gross amount at which carried at close of period, Land	2,415
Gross amount at which carried at close of period, Buildings and Improvements	11,568
Gross amount at which carried at close of period, Total	13,983
Accumulated Depreciation and Amortization	10,299
Congressional Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,793
Initial cost to company, Buildings and Improvements	7,424
Cost Capitalized Subsequent to Acquisition	99,752
Gross amount at which carried at close of period, Land	2,793
Gross amount at which carried at close of period, Buildings and Improvements	107,176
Gross amount at which carried at close of period, Total	109,969
Accumulated Depreciation and Amortization	70,269
Courthouse Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	1,750
Initial cost to company, Buildings and Improvements	1,869
Cost Capitalized Subsequent to Acquisition	3,717
Gross amount at which carried at close of period, Land	1,750
Gross amount at which carried at close of period, Buildings and Improvements	5,586
Gross amount at which carried at close of period, Total	7,336
Accumulated Depreciation and Amortization	3,775
Crossroads
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	4,635
Initial cost to company, Buildings and Improvements	11,611
Cost Capitalized Subsequent to Acquisition	20,464
Gross amount at which carried at close of period, Land	4,635
Gross amount at which carried at close of period, Buildings and Improvements	32,075
Gross amount at which carried at close of period, Total	36,710
Accumulated Depreciation and Amortization	24,647
Crow Canyon Commons
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	27,245
Initial cost to company, Buildings and Improvements	54,575
Cost Capitalized Subsequent to Acquisition	10,416
Gross amount at which carried at close of period, Land	27,245
Gross amount at which carried at close of period, Buildings and Improvements	64,991
Gross amount at which carried at close of period, Total	92,236
Accumulated Depreciation and Amortization	34,787
Darien Commons
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	30,368
Initial cost to company, Buildings and Improvements	19,523
Cost Capitalized Subsequent to Acquisition	99,046
Gross amount at which carried at close of period, Land	30,368
Gross amount at which carried at close of period, Buildings and Improvements	118,569
Gross amount at which carried at close of period, Total	148,937
Accumulated Depreciation and Amortization	7,299
Dedham Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	16,354
Initial cost to company, Buildings and Improvements	13,413
Cost Capitalized Subsequent to Acquisition	22,389
Gross amount at which carried at close of period, Land	16,354
Gross amount at which carried at close of period, Buildings and Improvements	35,802
Gross amount at which carried at close of period, Total	52,156
Accumulated Depreciation and Amortization	21,373
Del Mar Village
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	15,624
Initial cost to company, Buildings and Improvements	41,712
Cost Capitalized Subsequent to Acquisition	18,446
Gross amount at which carried at close of period, Land	15,587
Gross amount at which carried at close of period, Buildings and Improvements	60,195
Gross amount at which carried at close of period, Total	75,782
Accumulated Depreciation and Amortization	32,157
East Bay Bridge
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	29,069
Initial cost to company, Buildings and Improvements	138,035
Cost Capitalized Subsequent to Acquisition	12,975
Gross amount at which carried at close of period, Land	29,069
Gross amount at which carried at close of period, Buildings and Improvements	151,010
Gross amount at which carried at close of period, Total	180,079
Accumulated Depreciation and Amortization	56,523
Elllisburg
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	4,028
Initial cost to company, Buildings and Improvements	11,309
Cost Capitalized Subsequent to Acquisition	23,327
Gross amount at which carried at close of period, Land	4,013
Gross amount at which carried at close of period, Buildings and Improvements	34,651
Gross amount at which carried at close of period, Total	38,664
Accumulated Depreciation and Amortization	24,486
Escondido Promenade
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	29,281
Initial cost to company, Buildings and Improvements	105,736
Cost Capitalized Subsequent to Acquisition	182
Gross amount at which carried at close of period, Land	29,281
Gross amount at which carried at close of period, Buildings and Improvements	105,918
Gross amount at which carried at close of period, Total	135,199
Accumulated Depreciation and Amortization	5,809
Fairfax Junction
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	16,768
Initial cost to company, Buildings and Improvements	23,825
Cost Capitalized Subsequent to Acquisition	5,648
Gross amount at which carried at close of period, Land	16,768
Gross amount at which carried at close of period, Buildings and Improvements	29,473
Gross amount at which carried at close of period, Total	46,241
Accumulated Depreciation and Amortization	5,174
Federal Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	10,216
Initial cost to company, Buildings and Improvements	17,895
Cost Capitalized Subsequent to Acquisition	45,417
Gross amount at which carried at close of period, Land	10,216
Gross amount at which carried at close of period, Buildings and Improvements	63,312
Gross amount at which carried at close of period, Total	73,528
Accumulated Depreciation and Amortization	53,555
Finley Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	9,252
Initial cost to company, Buildings and Improvements	9,544
Cost Capitalized Subsequent to Acquisition	20,918
Gross amount at which carried at close of period, Land	9,252
Gross amount at which carried at close of period, Buildings and Improvements	30,462
Gross amount at which carried at close of period, Total	39,714
Accumulated Depreciation and Amortization	24,206
Flourtown
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	1,345
Initial cost to company, Buildings and Improvements	3,943
Cost Capitalized Subsequent to Acquisition	14,365
Gross amount at which carried at close of period, Land	1,507
Gross amount at which carried at close of period, Buildings and Improvements	18,146
Gross amount at which carried at close of period, Total	19,653
Accumulated Depreciation and Amortization	8,780
Fourth Street
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	13,978
Initial cost to company, Buildings and Improvements	9,909
Cost Capitalized Subsequent to Acquisition	3,995
Gross amount at which carried at close of period, Land	13,978
Gross amount at which carried at close of period, Buildings and Improvements	13,904
Gross amount at which carried at close of period, Total	27,882
Accumulated Depreciation and Amortization	4,572
Freedom Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	3,255
Cost Capitalized Subsequent to Acquisition	40,950
Gross amount at which carried at close of period, Land	0
Gross amount at which carried at close of period, Buildings and Improvements	44,205
Gross amount at which carried at close of period, Total	44,205
Accumulated Depreciation and Amortization	4,262
Fresh Meadows
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	24,625
Initial cost to company, Buildings and Improvements	25,255
Cost Capitalized Subsequent to Acquisition	46,717
Gross amount at which carried at close of period, Land	24,633
Gross amount at which carried at close of period, Buildings and Improvements	71,964
Gross amount at which carried at close of period, Total	96,597
Accumulated Depreciation and Amortization	51,580
Friendship Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	12,696
Initial cost to company, Buildings and Improvements	20,803
Cost Capitalized Subsequent to Acquisition	3,757
Gross amount at which carried at close of period, Land	12,696
Gross amount at which carried at close of period, Buildings and Improvements	24,560
Gross amount at which carried at close of period, Total	37,256
Accumulated Depreciation and Amortization	14,997
Gaithersburg Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	7,701
Initial cost to company, Buildings and Improvements	5,271
Cost Capitalized Subsequent to Acquisition	26,720
Gross amount at which carried at close of period, Land	5,973
Gross amount at which carried at close of period, Buildings and Improvements	33,719
Gross amount at which carried at close of period, Total	39,692
Accumulated Depreciation and Amortization	21,815
Garden Market
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,677
Initial cost to company, Buildings and Improvements	4,829
Cost Capitalized Subsequent to Acquisition	8,580
Gross amount at which carried at close of period, Land	2,677
Gross amount at which carried at close of period, Buildings and Improvements	13,409
Gross amount at which carried at close of period, Total	16,086
Accumulated Depreciation and Amortization	10,515
Georgetowne Shopping Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	32,202
Initial cost to company, Buildings and Improvements	49,586
Cost Capitalized Subsequent to Acquisition	4,766
Gross amount at which carried at close of period, Land	32,202
Gross amount at which carried at close of period, Buildings and Improvements	54,352
Gross amount at which carried at close of period, Total	86,554
Accumulated Depreciation and Amortization	7,562
Governor Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,068
Initial cost to company, Buildings and Improvements	4,905
Cost Capitalized Subsequent to Acquisition	28,024
Gross amount at which carried at close of period, Land	2,068
Gross amount at which carried at close of period, Buildings and Improvements	32,929
Gross amount at which carried at close of period, Total	34,997
Accumulated Depreciation and Amortization	23,482
Graham Park Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	642
Initial cost to company, Buildings and Improvements	7,629
Cost Capitalized Subsequent to Acquisition	19,114
Gross amount at which carried at close of period, Land	653
Gross amount at which carried at close of period, Buildings and Improvements	26,732
Gross amount at which carried at close of period, Total	27,385
Accumulated Depreciation and Amortization	19,363
Gratiot Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	525
Initial cost to company, Buildings and Improvements	1,601
Cost Capitalized Subsequent to Acquisition	17,836
Gross amount at which carried at close of period, Land	525
Gross amount at which carried at close of period, Buildings and Improvements	19,437
Gross amount at which carried at close of period, Total	19,962
Accumulated Depreciation and Amortization	18,005
Greenlawn Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	10,590
Initial cost to company, Buildings and Improvements	20,869
Cost Capitalized Subsequent to Acquisition	2,376
Gross amount at which carried at close of period, Land	10,917
Gross amount at which carried at close of period, Buildings and Improvements	22,918
Gross amount at which carried at close of period, Total	33,835
Accumulated Depreciation and Amortization	6,543
Greenwich Avenue
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	7,484
Initial cost to company, Buildings and Improvements	5,445
Cost Capitalized Subsequent to Acquisition	10,819
Gross amount at which carried at close of period, Land	7,484
Gross amount at which carried at close of period, Buildings and Improvements	16,264
Gross amount at which carried at close of period, Total	23,748
Accumulated Depreciation and Amortization	7,513
Grossmont Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	125,434
Initial cost to company, Buildings and Improvements	50,311
Cost Capitalized Subsequent to Acquisition	1,194
Gross amount at which carried at close of period, Land	125,434
Gross amount at which carried at close of period, Buildings and Improvements	51,505
Gross amount at which carried at close of period, Total	176,939
Accumulated Depreciation and Amortization	9,032
Hastings Ranch Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,257
Initial cost to company, Buildings and Improvements	22,393
Cost Capitalized Subsequent to Acquisition	1,071
Gross amount at which carried at close of period, Land	2,257
Gross amount at which carried at close of period, Buildings and Improvements	23,464
Gross amount at which carried at close of period, Total	25,721
Accumulated Depreciation and Amortization	5,442
Hauppauge
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	8,791
Initial cost to company, Buildings and Improvements	15,262
Cost Capitalized Subsequent to Acquisition	15,278
Gross amount at which carried at close of period, Land	8,519
Gross amount at which carried at close of period, Buildings and Improvements	30,812
Gross amount at which carried at close of period, Total	39,331
Accumulated Depreciation and Amortization	16,713
Hilton Village
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	85,431
Cost Capitalized Subsequent to Acquisition	988
Gross amount at which carried at close of period, Land	0
Gross amount at which carried at close of period, Buildings and Improvements	86,419
Gross amount at which carried at close of period, Total	86,419
Accumulated Depreciation and Amortization	6,030
Hoboken
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	83,245
Initial cost to company, Land	56,866
Initial cost to company, Buildings and Improvements	167,835
Cost Capitalized Subsequent to Acquisition	3,580
Gross amount at which carried at close of period, Land	56,872
Gross amount at which carried at close of period, Buildings and Improvements	171,409
Gross amount at which carried at close of period, Total	228,281
Accumulated Depreciation and Amortization	22,079
Hollywood Blvd
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	8,300
Initial cost to company, Buildings and Improvements	16,920
Cost Capitalized Subsequent to Acquisition	36,825
Gross amount at which carried at close of period, Land	8,370
Gross amount at which carried at close of period, Buildings and Improvements	53,675
Gross amount at which carried at close of period, Total	62,045
Accumulated Depreciation and Amortization	24,913
Huntington
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	12,194
Initial cost to company, Buildings and Improvements	16,008
Cost Capitalized Subsequent to Acquisition	77,609
Gross amount at which carried at close of period, Land	12,294
Gross amount at which carried at close of period, Buildings and Improvements	93,517
Gross amount at which carried at close of period, Total	105,811
Accumulated Depreciation and Amortization	19,214
Huntington Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	12,026
Initial cost to company, Buildings and Improvements	33,509
Cost Capitalized Subsequent to Acquisition	5,142
Gross amount at which carried at close of period, Land	12,537
Gross amount at which carried at close of period, Buildings and Improvements	38,140
Gross amount at which carried at close of period, Total	50,677
Accumulated Depreciation and Amortization	7,230
Idylwood Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	4,308
Initial cost to company, Buildings and Improvements	10,026
Cost Capitalized Subsequent to Acquisition	3,761
Gross amount at which carried at close of period, Land	4,308
Gross amount at which carried at close of period, Buildings and Improvements	13,787
Gross amount at which carried at close of period, Total	18,095
Accumulated Depreciation and Amortization	11,137
Kings Court
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	10,714
Cost Capitalized Subsequent to Acquisition	901
Gross amount at which carried at close of period, Land	0
Gross amount at which carried at close of period, Buildings and Improvements	11,615
Gross amount at which carried at close of period, Total	11,615
Accumulated Depreciation and Amortization	11,361
Kingstowne Towne Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	72,234
Initial cost to company, Buildings and Improvements	137,466
Cost Capitalized Subsequent to Acquisition	1,523
Gross amount at which carried at close of period, Land	72,234
Gross amount at which carried at close of period, Buildings and Improvements	138,989
Gross amount at which carried at close of period, Total	211,223
Accumulated Depreciation and Amortization	8,021
Lancaster
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	2,103
Cost Capitalized Subsequent to Acquisition	6,693
Gross amount at which carried at close of period, Land	432
Gross amount at which carried at close of period, Buildings and Improvements	8,364
Gross amount at which carried at close of period, Total	8,796
Accumulated Depreciation and Amortization	6,705
Langhorne Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	720
Initial cost to company, Buildings and Improvements	2,974
Cost Capitalized Subsequent to Acquisition	21,264
Gross amount at which carried at close of period, Land	720
Gross amount at which carried at close of period, Buildings and Improvements	24,238
Gross amount at which carried at close of period, Total	24,958
Accumulated Depreciation and Amortization	19,250
Laurel
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	7,458
Initial cost to company, Buildings and Improvements	22,525
Cost Capitalized Subsequent to Acquisition	31,628
Gross amount at which carried at close of period, Land	7,551
Gross amount at which carried at close of period, Buildings and Improvements	54,060
Gross amount at which carried at close of period, Total	61,611
Accumulated Depreciation and Amortization	45,960
Lawrence Park
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	6,150
Initial cost to company, Buildings and Improvements	8,491
Cost Capitalized Subsequent to Acquisition	50,304
Gross amount at which carried at close of period, Land	6,161
Gross amount at which carried at close of period, Buildings and Improvements	58,784
Gross amount at which carried at close of period, Total	64,945
Accumulated Depreciation and Amortization	27,813
Linden Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	79,382
Initial cost to company, Buildings and Improvements	19,247
Cost Capitalized Subsequent to Acquisition	59,687
Gross amount at which carried at close of period, Land	79,346
Gross amount at which carried at close of period, Buildings and Improvements	78,970
Gross amount at which carried at close of period, Total	158,316
Accumulated Depreciation and Amortization	36,551
Melville Mall
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	35,622
Initial cost to company, Buildings and Improvements	32,882
Cost Capitalized Subsequent to Acquisition	36,638
Gross amount at which carried at close of period, Land	35,622
Gross amount at which carried at close of period, Buildings and Improvements	69,520
Gross amount at which carried at close of period, Total	105,142
Accumulated Depreciation and Amortization	27,995
Mercer One One (formerly known as Mercer Mall)
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	19,152
Initial cost to company, Buildings and Improvements	44,384
Cost Capitalized Subsequent to Acquisition	52,891
Gross amount at which carried at close of period, Land	19,102
Gross amount at which carried at close of period, Buildings and Improvements	97,325
Gross amount at which carried at close of period, Total	116,427
Accumulated Depreciation and Amortization	43,920
Montrose Crossing
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	48,624
Initial cost to company, Buildings and Improvements	91,819
Cost Capitalized Subsequent to Acquisition	32,056
Gross amount at which carried at close of period, Land	48,624
Gross amount at which carried at close of period, Buildings and Improvements	123,875
Gross amount at which carried at close of period, Total	172,499
Accumulated Depreciation and Amortization	48,448
Mount Vernon/South Valley/7770 Richmond Hwy.
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	15,769
Initial cost to company, Buildings and Improvements	33,501
Cost Capitalized Subsequent to Acquisition	46,133
Gross amount at which carried at close of period, Land	15,851
Gross amount at which carried at close of period, Buildings and Improvements	79,552
Gross amount at which carried at close of period, Total	95,403
Accumulated Depreciation and Amortization	50,467
North Dartmouth
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	9,366
Initial cost to company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition	3
Gross amount at which carried at close of period, Land	9,366
Gross amount at which carried at close of period, Buildings and Improvements	3
Gross amount at which carried at close of period, Total	9,369
Accumulated Depreciation and Amortization	2
Northeast
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	938
Initial cost to company, Buildings and Improvements	8,779
Cost Capitalized Subsequent to Acquisition	25,941
Gross amount at which carried at close of period, Land	939
Gross amount at which carried at close of period, Buildings and Improvements	34,719
Gross amount at which carried at close of period, Total	35,658
Accumulated Depreciation and Amortization	23,769
Old Keene Mill
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	638
Initial cost to company, Buildings and Improvements	998
Cost Capitalized Subsequent to Acquisition	13,047
Gross amount at which carried at close of period, Land	638
Gross amount at which carried at close of period, Buildings and Improvements	14,045
Gross amount at which carried at close of period, Total	14,683
Accumulated Depreciation and Amortization	7,614
Old Town Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,420
Initial cost to company, Buildings and Improvements	2,765
Cost Capitalized Subsequent to Acquisition	37,064
Gross amount at which carried at close of period, Land	3,420
Gross amount at which carried at close of period, Buildings and Improvements	39,829
Gross amount at which carried at close of period, Total	43,249
Accumulated Depreciation and Amortization	26,408
Olivo at Mission Hills
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	15,048
Initial cost to company, Buildings and Improvements	46,732
Cost Capitalized Subsequent to Acquisition	21,130
Gross amount at which carried at close of period, Land	15,048
Gross amount at which carried at close of period, Buildings and Improvements	67,862
Gross amount at which carried at close of period, Total	82,910
Accumulated Depreciation and Amortization	10,589
Pan Am
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	8,694
Initial cost to company, Buildings and Improvements	12,929
Cost Capitalized Subsequent to Acquisition	10,707
Gross amount at which carried at close of period, Land	8,695
Gross amount at which carried at close of period, Buildings and Improvements	23,635
Gross amount at which carried at close of period, Total	32,330
Accumulated Depreciation and Amortization	18,863
Perring Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	2,800
Initial cost to company, Buildings and Improvements	6,461
Cost Capitalized Subsequent to Acquisition	28,432
Gross amount at which carried at close of period, Land	2,800
Gross amount at which carried at close of period, Buildings and Improvements	34,893
Gross amount at which carried at close of period, Total	37,693
Accumulated Depreciation and Amortization	25,530
Pike & Rose
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	31,471
Initial cost to company, Buildings and Improvements	10,335
Cost Capitalized Subsequent to Acquisition	820,583
Gross amount at which carried at close of period, Land	33,716
Gross amount at which carried at close of period, Buildings and Improvements	828,673
Gross amount at which carried at close of period, Total	862,389
Accumulated Depreciation and Amortization	124,714
Pike 7 Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	14,970
Initial cost to company, Buildings and Improvements	22,799
Cost Capitalized Subsequent to Acquisition	18,105
Gross amount at which carried at close of period, Land	14,914
Gross amount at which carried at close of period, Buildings and Improvements	40,960
Gross amount at which carried at close of period, Total	55,874
Accumulated Depreciation and Amortization	23,250
Plaza Del Mercado
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	10,305
Initial cost to company, Buildings and Improvements	21,553
Cost Capitalized Subsequent to Acquisition	14,913
Gross amount at which carried at close of period, Land	10,305
Gross amount at which carried at close of period, Buildings and Improvements	36,466
Gross amount at which carried at close of period, Total	46,771
Accumulated Depreciation and Amortization	11,427
Plaza Del Sol
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	5,605
Initial cost to company, Buildings and Improvements	12,331
Cost Capitalized Subsequent to Acquisition	(19)
Gross amount at which carried at close of period, Land	5,605
Gross amount at which carried at close of period, Buildings and Improvements	12,312
Gross amount at which carried at close of period, Total	17,917
Accumulated Depreciation and Amortization	2,595
Plaza El Segundo/The Point
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	124,706
Initial cost to company, Land	62,127
Initial cost to company, Buildings and Improvements	153,556
Cost Capitalized Subsequent to Acquisition	93,766
Gross amount at which carried at close of period, Land	64,463
Gross amount at which carried at close of period, Buildings and Improvements	244,986
Gross amount at which carried at close of period, Total	309,449
Accumulated Depreciation and Amortization	83,364
Queen Anne Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,319
Initial cost to company, Buildings and Improvements	8,457
Cost Capitalized Subsequent to Acquisition	7,886
Gross amount at which carried at close of period, Land	3,319
Gross amount at which carried at close of period, Buildings and Improvements	16,343
Gross amount at which carried at close of period, Total	19,662
Accumulated Depreciation and Amortization	12,380
Quince Orchard
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,197
Initial cost to company, Buildings and Improvements	7,949
Cost Capitalized Subsequent to Acquisition	29,972
Gross amount at which carried at close of period, Land	2,928
Gross amount at which carried at close of period, Buildings and Improvements	38,190
Gross amount at which carried at close of period, Total	41,118
Accumulated Depreciation and Amortization	27,989
Riverpoint Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	15,422
Initial cost to company, Buildings and Improvements	104,572
Cost Capitalized Subsequent to Acquisition	2,603
Gross amount at which carried at close of period, Land	15,422
Gross amount at which carried at close of period, Buildings and Improvements	107,175
Gross amount at which carried at close of period, Total	122,597
Accumulated Depreciation and Amortization	23,045
San Antonio Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	26,400
Initial cost to company, Buildings and Improvements	18,462
Cost Capitalized Subsequent to Acquisition	7,232
Gross amount at which carried at close of period, Land	26,400
Gross amount at which carried at close of period, Buildings and Improvements	25,694
Gross amount at which carried at close of period, Total	52,094
Accumulated Depreciation and Amortization	7,252
Santana Row
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	66,682
Initial cost to company, Buildings and Improvements	7,502
Cost Capitalized Subsequent to Acquisition	1,241,432
Gross amount at which carried at close of period, Land	57,592
Gross amount at which carried at close of period, Buildings and Improvements	1,258,024
Gross amount at which carried at close of period, Total	1,315,616
Accumulated Depreciation and Amortization	323,191
Shops at Pembroke Gardens
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	39,506
Initial cost to company, Buildings and Improvements	141,356
Cost Capitalized Subsequent to Acquisition	650
Gross amount at which carried at close of period, Land	39,506
Gross amount at which carried at close of period, Buildings and Improvements	142,006
Gross amount at which carried at close of period, Total	181,512
Accumulated Depreciation and Amortization	8,087
Sylmar Towne Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	18,522
Initial cost to company, Buildings and Improvements	24,637
Cost Capitalized Subsequent to Acquisition	3,420
Gross amount at which carried at close of period, Land	18,522
Gross amount at which carried at close of period, Buildings and Improvements	28,057
Gross amount at which carried at close of period, Total	46,579
Accumulated Depreciation and Amortization	5,567
THE AVENUE at White Marsh
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	20,682
Initial cost to company, Buildings and Improvements	72,432
Cost Capitalized Subsequent to Acquisition	40,410
Gross amount at which carried at close of period, Land	20,685
Gross amount at which carried at close of period, Buildings and Improvements	112,839
Gross amount at which carried at close of period, Total	133,524
Accumulated Depreciation and Amortization	53,760
The Grove at Shrewsbury
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	43,266
Initial cost to company, Land	18,016
Initial cost to company, Buildings and Improvements	103,115
Cost Capitalized Subsequent to Acquisition	10,581
Gross amount at which carried at close of period, Land	18,021
Gross amount at which carried at close of period, Buildings and Improvements	113,691
Gross amount at which carried at close of period, Total	131,712
Accumulated Depreciation and Amortization	35,803
The Shoppes At Nottingham Square
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	4,441
Initial cost to company, Buildings and Improvements	12,849
Cost Capitalized Subsequent to Acquisition	2,227
Gross amount at which carried at close of period, Land	4,441
Gross amount at which carried at close of period, Buildings and Improvements	15,076
Gross amount at which carried at close of period, Total	19,517
Accumulated Depreciation and Amortization	7,936
Third Street Promenade
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	17,161
Initial cost to company, Buildings and Improvements	12,051
Cost Capitalized Subsequent to Acquisition	51,169
Gross amount at which carried at close of period, Land	19,642
Gross amount at which carried at close of period, Buildings and Improvements	60,739
Gross amount at which carried at close of period, Total	80,381
Accumulated Depreciation and Amortization	36,598
Tower Shopping Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	7,170
Initial cost to company, Buildings and Improvements	10,518
Cost Capitalized Subsequent to Acquisition	8,565
Gross amount at which carried at close of period, Land	7,280
Gross amount at which carried at close of period, Buildings and Improvements	18,973
Gross amount at which carried at close of period, Total	26,253
Accumulated Depreciation and Amortization	11,679
Tower Shops
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	29,940
Initial cost to company, Buildings and Improvements	43,390
Cost Capitalized Subsequent to Acquisition	31,962
Gross amount at which carried at close of period, Land	29,962
Gross amount at which carried at close of period, Buildings and Improvements	75,330
Gross amount at which carried at close of period, Total	105,292
Accumulated Depreciation and Amortization	30,876
Troy Hills
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,126
Initial cost to company, Buildings and Improvements	5,193
Cost Capitalized Subsequent to Acquisition	33,050
Gross amount at which carried at close of period, Land	5,865
Gross amount at which carried at close of period, Buildings and Improvements	35,504
Gross amount at which carried at close of period, Total	41,369
Accumulated Depreciation and Amortization	26,645
Twinbrooke Shopping Centre
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	16,484
Initial cost to company, Buildings and Improvements	18,898
Cost Capitalized Subsequent to Acquisition	755
Gross amount at which carried at close of period, Land	16,484
Gross amount at which carried at close of period, Buildings and Improvements	19,653
Gross amount at which carried at close of period, Total	36,137
Accumulated Depreciation and Amortization	1,764
Tyson's Station
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	388
Initial cost to company, Buildings and Improvements	453
Cost Capitalized Subsequent to Acquisition	6,323
Gross amount at which carried at close of period, Land	493
Gross amount at which carried at close of period, Buildings and Improvements	6,671
Gross amount at which carried at close of period, Total	7,164
Accumulated Depreciation and Amortization	4,383
Village at Shirlington
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	9,761
Initial cost to company, Buildings and Improvements	14,808
Cost Capitalized Subsequent to Acquisition	48,905
Gross amount at which carried at close of period, Land	6,323
Gross amount at which carried at close of period, Buildings and Improvements	67,151
Gross amount at which carried at close of period, Total	73,474
Accumulated Depreciation and Amortization	37,988
Westgate Center
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	6,319
Initial cost to company, Buildings and Improvements	107,284
Cost Capitalized Subsequent to Acquisition	43,876
Gross amount at which carried at close of period, Land	6,319
Gross amount at which carried at close of period, Buildings and Improvements	151,160
Gross amount at which carried at close of period, Total	157,479
Accumulated Depreciation and Amortization	83,068
Westpost
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	0
Initial cost to company, Buildings and Improvements	2,955
Cost Capitalized Subsequent to Acquisition	109,946
Gross amount at which carried at close of period, Land	0
Gross amount at which carried at close of period, Buildings and Improvements	112,901
Gross amount at which carried at close of period, Total	112,901
Accumulated Depreciation and Amortization	63,606
White Marsh Plaza
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,478
Initial cost to company, Buildings and Improvements	21,413
Cost Capitalized Subsequent to Acquisition	2,170
Gross amount at which carried at close of period, Land	3,514
Gross amount at which carried at close of period, Buildings and Improvements	23,547
Gross amount at which carried at close of period, Total	27,061
Accumulated Depreciation and Amortization	12,580
White Marsh Other
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	27,720
Initial cost to company, Buildings and Improvements	0
Cost Capitalized Subsequent to Acquisition	213
Gross amount at which carried at close of period, Land	27,750
Gross amount at which carried at close of period, Buildings and Improvements	183
Gross amount at which carried at close of period, Total	27,933
Accumulated Depreciation and Amortization	56
Wildwood
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	9,111
Initial cost to company, Buildings and Improvements	1,061
Cost Capitalized Subsequent to Acquisition	18,370
Gross amount at which carried at close of period, Land	9,111
Gross amount at which carried at close of period, Buildings and Improvements	19,431
Gross amount at which carried at close of period, Total	28,542
Accumulated Depreciation and Amortization	11,661
Willow Grove
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	1,499
Initial cost to company, Buildings and Improvements	6,643
Cost Capitalized Subsequent to Acquisition	41,838
Gross amount at which carried at close of period, Land	1,499
Gross amount at which carried at close of period, Buildings and Improvements	48,481
Gross amount at which carried at close of period, Total	49,980
Accumulated Depreciation and Amortization	23,360
Willow Lawn
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	3,192
Initial cost to company, Buildings and Improvements	7,723
Cost Capitalized Subsequent to Acquisition	97,749
Gross amount at which carried at close of period, Land	7,790
Gross amount at which carried at close of period, Buildings and Improvements	100,874
Gross amount at which carried at close of period, Total	108,664
Accumulated Depreciation and Amortization	72,875
Wynnewood
Real Estate and Accumulated Depreciation [Line Items]
Initial cost to company, Land	8,055
Initial cost to company, Buildings and Improvements	13,759
Cost Capitalized Subsequent to Acquisition	22,569
Gross amount at which carried at close of period, Land	8,055
Gross amount at which carried at close of period, Buildings and Improvements	36,328
Gross amount at which carried at close of period, Total	44,383
Accumulated Depreciation and Amortization	$ 29,048

[1] For Federal tax purposes, the aggregate cost basis is approximately $9.4 billion as of December 31, 2023.