| Cover | Aug. 22, 2022 |
| Entity Addresses [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 22, 2022 |
| Entity File Number | 001-31817 |
| Entity Registrant Name | Cedar Realty Trust, Inc. |
| Entity Central Index Key | 0000761648 |
| Entity Tax Identification Number | 42-1241468 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 2529 Virginia Beach Blvd. |
| Entity Address, City or Town | Virginia Beach |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 23452 |
| City Area Code | (757) |
| Local Phone Number | 627-9088 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock, $0.06 par value per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.06 par value per share |
| Trading Symbol | CDR |
| Security Exchange Name | NYSE |
| 7.25% Series B Cumulative Redeemable Preferred Stock | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | 7.25% Series B Cumulative Redeemable Preferred Stock |
| Trading Symbol | CDRpB |
| Security Exchange Name | NYSE |
| 6.5% Series C Cumulative Redeemable Preferred Stock | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | 6.5% Series C Cumulative Redeemable Preferred Stock |
| Trading Symbol | CDRpC |
| Security Exchange Name | NYSE |
| Former Address [Member] | |
| Entity Addresses [Line Items] | |
| Entity Address, Address Line One | 928 Carmans Road |
| Entity Address, City or Town | Massapequa |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11758 |
