Consolidated Statement of Equity - USD ($) | Total | Limited Partners' Interest In Operating Partnership [Member] | Restated [Member] | Restated [Member]Limited Partners' Interest In Operating Partnership [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]Restated [Member] | Preferred Stock [Member] | Preferred Stock [Member]Restated [Member] | Common Stock [Member] | Common Stock [Member]Restated [Member] | Treasury Stock, At Cost [Member] | Treasury Stock, At Cost [Member]Restated [Member] | Additional Paid-In Capital [Member] | Additional Paid-In Capital [Member]Restated [Member] | Cumulative Distributions In Excess Of Net Income [Member] | Cumulative Distributions In Excess Of Net Income [Member]Restated [Member] | Cumulative Distributions In Excess Of Net Income [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]Restated [Member] | Accumulated Other Comprehensive Income [Member] | Accumulated Other Comprehensive Income [Member]Restated [Member] | Cedar Realty Trust, Inc. [Member] | Cedar Realty Trust, Inc. [Member]Restated [Member] | Cedar Realty Trust, Inc. [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]Restated [Member] | Minority Interests In Consolidated Joint Ventures [Member] | Minority Interests In Consolidated Joint Ventures [Member]Restated [Member] | Noncontrolling Interests [Member] | Noncontrolling Interests [Member]Restated [Member] |
Balance at Dec. 31, 2018 | $ 558,716,000 | $ 3,403,000 | $ 558,201,000 | $ 3,403,000 | | $ 159,541,000 | $ 159,541,000 | $ 5,426,000 | $ 5,426,000 | $ (16,572,000) | $ (16,572,000) | $ 875,565,000 | $ 875,565,000 | $ (475,726,000) | $ (476,241,000) | | $ 7,191,000 | $ 7,191,000 | $ 555,425,000 | $ 554,910,000 | | $ (112,000) | $ (112,000) | $ 3,291,000 | $ 3,291,000 |
Balance, shares at Dec. 31, 2018 | | | | | | 6,450,000 | 6,450,000 | 90,436,000 | 90,436,000 | | | | | | | | | | | | | | | | |
Net (loss) income | 2,989,000 | 2,000 | | | | | | | | | | | | 2,882,000 | | | | | 2,882,000 | | | 105,000 | | 107,000 | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (5,442,000) | (33,000) | | | | | | | | | | | | | | | (5,409,000) | | (5,409,000) | | | | | (33,000) | |
Share-based compensation, net | 753,000 | | | | | | | $ 39,000 | | 22,000 | | 692,000 | | | | | | | 753,000 | | | | | | |
Share-based compensation, net, shares | | | | | | | | 650,000 | | | | | | | | | | | | | | | | | |
Common stock sales, net of issuance expenses | 5,000 | | | | | | | | | | | 5,000 | | | | | | | 5,000 | | | | | | |
Common stock sales, net of issuance expenses, shares | | | | | | | | 1,000 | | | | | | | | | | | | | | | | | |
Common stock repurchases | (6,844,000) | | | | | | | $ (123,000) | | | | (6,721,000) | | | | | | | (6,844,000) | | | | | | |
Common stock repurchases. Shares | | | | | | | | (2,050,000) | | | | | | | | | | | | | | | | | |
Preferred stock dividends | (2,688,000) | | | | | | | | | | | | | (2,688,000) | | | | | (2,688,000) | | | | | | |
Distributions to common shareholders/noncontrolling interests | (4,483,000) | (28,000) | | | | | | | | | | | | (4,455,000) | | | | | (4,455,000) | | | | | (28,000) | |
Reallocation adjustment of limited partners' interest | | 12,000 | | | | | | | | | | (12,000) | | | | | | | (12,000) | | | | | 12,000 | |
Balance at Mar. 31, 2019 | 542,491,000 | 3,356,000 | | | | $ 159,541,000 | | $ 5,342,000 | | (16,550,000) | | 869,529,000 | | (480,502,000) | | | 1,782,000 | | 539,142,000 | | | (7,000) | | 3,349,000 | |
Balance, shares at Mar. 31, 2019 | | | | | | 6,450,000 | | 89,037,000 | | | | | | | | | | | | | | | | | |
Balance at Dec. 31, 2018 | 558,716,000 | 3,403,000 | $ 558,201,000 | $ 3,403,000 | | $ 159,541,000 | $ 159,541,000 | $ 5,426,000 | $ 5,426,000 | (16,572,000) | $ (16,572,000) | 875,565,000 | $ 875,565,000 | (475,726,000) | $ (476,241,000) | | 7,191,000 | $ 7,191,000 | 555,425,000 | $ 554,910,000 | | (112,000) | $ (112,000) | 3,291,000 | $ 3,291,000 |
Balance, shares at Dec. 31, 2018 | | | | | | 6,450,000 | 6,450,000 | 90,436,000 | 90,436,000 | | | | | | | | | | | | | | | | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (14,038,000) | | | | | | | | | | | | | | | | | | | | | | | | |
Balance at Jun. 30, 2019 | 533,407,000 | 3,295,000 | | | | $ 159,541,000 | | $ 5,341,000 | | (16,470,000) | | 870,582,000 | | (482,258,000) | | | (6,761,000) | | 529,975,000 | | | 137,000 | | 3,432,000 | |
Balance, shares at Jun. 30, 2019 | | | | | | 6,450,000 | | 89,025,000 | | | | | | | | | | | | | | | | | |
Prior period adjustment - adoption of lease accounting standard | Accounting Standards Update 2016-02 [Member] | | | | | $ (515,000) | | | | | | | | | | | $ (515,000) | | | | | $ (515,000) | | | | |
Balance at Mar. 31, 2019 | 542,491,000 | 3,356,000 | | | | $ 159,541,000 | | $ 5,342,000 | | (16,550,000) | | 869,529,000 | | (480,502,000) | | | 1,782,000 | | 539,142,000 | | | (7,000) | | 3,349,000 | |
Balance, shares at Mar. 31, 2019 | | | | | | 6,450,000 | | 89,037,000 | | | | | | | | | | | | | | | | | |
Net (loss) income | 5,544,000 | 17,000 | | | | | | | | | | | | 5,383,000 | | | | | 5,383,000 | | | 144,000 | | 161,000 | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (8,596,000) | (53,000) | | | | | | | | | | | | | | | (8,543,000) | | (8,543,000) | | | | | (53,000) | |
Share-based compensation, net | 1,132,000 | | | | | | | $ (1,000) | | 80,000 | | 1,053,000 | | | | | | | 1,132,000 | | | | | | |
Share-based compensation, net, shares | | | | | | | | (13,000) | | | | | | | | | | | | | | | | | |
Common stock sales, net of issuance expenses | 3,000 | | | | | | | | | | | 3,000 | | | | | | | 3,000 | | | | | | |
Common stock sales, net of issuance expenses, shares | | | | | | | | 1,000 | | | | | | | | | | | | | | | | | |
Preferred stock dividends | (2,688,000) | | | | | | | | | | | | | (2,688,000) | | | | | (2,688,000) | | | | | | |
Distributions to common shareholders/noncontrolling interests | (4,479,000) | (28,000) | | | | | | | | | | | | (4,451,000) | | | | | (4,451,000) | | | | | (28,000) | |
Reallocation adjustment of limited partners' interest | | 3,000 | | | | | | | | | | (3,000) | | | | | | | (3,000) | | | | | 3,000 | |
Balance at Jun. 30, 2019 | 533,407,000 | 3,295,000 | | | | $ 159,541,000 | | $ 5,341,000 | | (16,470,000) | | 870,582,000 | | (482,258,000) | | | (6,761,000) | | 529,975,000 | | | 137,000 | | 3,432,000 | |
Balance, shares at Jun. 30, 2019 | | | | | | 6,450,000 | | 89,025,000 | | | | | | | | | | | | | | | | | |
Balance at Dec. 31, 2019 | 514,075,000 | 3,079,000 | | | | $ 159,541,000 | | $ 5,341,000 | | (16,311,000) | | 872,724,000 | | (503,725,000) | | | (7,009,000) | | 510,561,000 | | | 435,000 | | 3,514,000 | |
Balance, shares at Dec. 31, 2019 | | | | | | 6,450,000 | | 89,020,000 | | | | | | | | | | | | | | | | | |
Net (loss) income | (2,098,000) | (28,000) | | | | | | | | | | | | (2,246,000) | | | | | (2,246,000) | | | 176,000 | | 148,000 | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (15,014,000) | (90,000) | | | | | | | | | | | | | | | (14,924,000) | | (14,924,000) | | | | | (90,000) | |
Share-based compensation, net | 866,000 | | | | | | | $ 19,000 | | 1,006,000 | | (159,000) | | | | | | | 866,000 | | | | | | |
Share-based compensation, net, shares | | | | | | | | 305,000 | | | | | | | | | | | | | | | | | |
Common stock sales, net of issuance expenses | 5,000 | | | | | | | | | | | 5,000 | | | | | | | 5,000 | | | | | | |
Common stock sales, net of issuance expenses, shares | | | | | | | | 2,000 | | | | | | | | | | | | | | | | | |
Preferred stock dividends | (2,688,000) | | | | | | | | | | | | | (2,688,000) | | | | | (2,688,000) | | | | | | |
Distributions to common shareholders/noncontrolling interests | (4,495,000) | (27,000) | | | | | | | | | | | | (4,468,000) | | | | | (4,468,000) | | | | | (27,000) | |
Reallocation adjustment of limited partners' interest | | (5,000) | | | | | | | | | | 5,000 | | | | | | | 5,000 | | | | | (5,000) | |
Balance at Mar. 31, 2020 | 490,651,000 | 2,929,000 | | | | $ 159,541,000 | | $ 5,360,000 | | (15,305,000) | | 872,575,000 | | (513,127,000) | | | (21,933,000) | | 487,111,000 | | | 611,000 | | 3,540,000 | |
Balance, shares at Mar. 31, 2020 | | | | | | 6,450,000 | | 89,327,000 | | | | | | | | | | | | | | | | | |
Balance at Dec. 31, 2019 | 514,075,000 | 3,079,000 | | | | $ 159,541,000 | | $ 5,341,000 | | (16,311,000) | | 872,724,000 | | (503,725,000) | | | (7,009,000) | | 510,561,000 | | | 435,000 | | 3,514,000 | |
Balance, shares at Dec. 31, 2019 | | | | | | 6,450,000 | | 89,020,000 | | | | | | | | | | | | | | | | | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (15,602,000) | | | | | | | | | | | | | | | | | | | | | | | | |
Balance at Jun. 30, 2020 | 481,502,000 | 2,871,000 | | | | $ 159,541,000 | | $ 5,360,000 | | (15,248,000) | | 873,550,000 | | (522,805,000) | | | (22,518,000) | | 477,880,000 | | | 751,000 | | 3,622,000 | |
Balance, shares at Jun. 30, 2020 | | | | | | 6,450,000 | | 89,330,000 | | | | | | | | | | | | | | | | | |
Balance at Mar. 31, 2020 | 490,651,000 | 2,929,000 | | | | $ 159,541,000 | | $ 5,360,000 | | (15,305,000) | | 872,575,000 | | (513,127,000) | | | (21,933,000) | | 487,111,000 | | | 611,000 | | 3,540,000 | |
Balance, shares at Mar. 31, 2020 | | | | | | 6,450,000 | | 89,327,000 | | | | | | | | | | | | | | | | | |
Net (loss) income | (6,009,000) | (52,000) | | | | | | | | | | | | (6,097,000) | | | | | (6,097,000) | | | 140,000 | | 88,000 | |
Unrealized gain (loss) on change in fair value of cash flow hedges | (588,000) | (3,000) | | | | | | | | | | | | | | | (585,000) | | (585,000) | | | | | (3,000) | |
Share-based compensation, net | 1,030,000 | | | | | | | | | 57,000 | | 973,000 | | | | | | | 1,030,000 | | | | | | |
Common stock sales, net of issuance expenses | 4,000 | | | | | | | | | | | 4,000 | | | | | | | 4,000 | | | | | | |
Common stock sales, net of issuance expenses, shares | | | | | | | | 3,000 | | | | | | | | | | | | | | | | | |
Preferred stock dividends | (2,688,000) | | | | | | | | | | | | | (2,688,000) | | | | | (2,688,000) | | | | | | |
Distributions to common shareholders/noncontrolling interests | (898,000) | (5,000) | | | | | | | | | | | | (893,000) | | | | | (893,000) | | | | | (5,000) | |
Reallocation adjustment of limited partners' interest | | 2,000 | | | | | | | | | | (2,000) | | | | | | | (2,000) | | | | | 2,000 | |
Balance at Jun. 30, 2020 | $ 481,502,000 | $ 2,871,000 | | | | $ 159,541,000 | | $ 5,360,000 | | $ (15,248,000) | | $ 873,550,000 | | $ (522,805,000) | | | $ (22,518,000) | | $ 477,880,000 | | | $ 751,000 | | $ 3,622,000 | |
Balance, shares at Jun. 30, 2020 | | | | | | 6,450,000 | | 89,330,000 | | | | | | | | | | | | | | | | | |