| Cover | Nov. 09, 2021 | Oct. 08, 2021 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Amendment Flag | false | |
| Document Period End Date | Nov. 9, 2021 | |
| Entity Registrant Name | PFSWEB INC | |
| Entity Central Index Key | 0001095315 | |
| Entity Emerging Growth Company | false | |
| Title of 12(b) Security | Common stock, $0.001 par value | |
| Trading Symbol | PFSW | |
| Security Exchange Name | NASDAQ | |
| Entity File Number | 000-28275 | |
| Entity Incorporation, State or Country Code | DE | |
| Entity Tax Identification Number | 75-2837058 | |
| Entity Address, Address Line One | 505 MILLENNIUM DRIVE | |
| Entity Address, City or Town | ALLEN | |
| Entity Address, State or Province | TX | |
| Entity Address, Postal Zip Code | 75013 | |
| City Area Code | 972 | |
| Local Phone Number | 881-2900 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false |
