| Document and Entity Information | Dec. 15, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 15, 2021 |
| Entity Registrant Name | PDL Community Bancorp |
| Entity Central Index Key | 0001703489 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity File Number | 001-38224 |
| Entity Tax Identification Number | 82-2857928 |
| Entity Address, Address Line One | 2244 Westchester Avenue |
| Entity Address, City or Town | Bronx |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10462 |
| City Area Code | 718 |
| Local Phone Number | 931-9000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Incorporation, State or Country Code | NY |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | PDLB |
| Security Exchange Name | NASDAQ |
