| Document and Entity Information | Oct. 15, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 15, 2021 |
| Entity Registrant Name | PERFICIENT, INC |
| Entity Central Index Key | 0001085869 |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-15169 |
| Entity Tax Identification Number | 74-2853258 |
| Entity Address, Address Line One | 555 Maryville University Drive |
| Entity Address, Address Line Two | Suite 600 |
| Entity Address, City or Town | Saint Louis |
| Entity Address, State or Province | MO |
| Entity Address, Postal Zip Code | 63141 |
| City Area Code | 314 |
| Local Phone Number | 529-3600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | PRFT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
