| Cover | Feb. 26, 2021 |
| Schedule of Capitalization, Equity [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 26, 2021 |
| Entity File Number | 001-38106 |
| Entity Registrant Name | PLYMOUTH INDUSTRIAL REIT, INC. |
| Entity Central Index Key | 0001515816 |
| Entity Tax Identification Number | 27-5466153 |
| Entity Incorporation, State or Country Code | MD |
| Entity Address, Address Line One | 20 Custom Street |
| Entity Address, Address Line Two | 11th Floor |
| Entity Address, City or Town | Boston |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02110 |
| City Area Code | (617) |
| Local Phone Number | 340-3814 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock, par value $0.01 per share | |
| Schedule of Capitalization, Equity [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | PLYM |
| Security Exchange Name | NYSE |
| 7.50% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share | |
| Schedule of Capitalization, Equity [Line Items] | |
| Title of 12(b) Security | 7.50% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share |
| Trading Symbol | PLYM-PrA |
| Security Exchange Name | NYSEAMER |
