| Cover | Nov. 02, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 2, 2021 |
| Entity File Number | 001-35013 |
| Entity Registrant Name | QAD Inc. |
| Entity Central Index Key | 0001036188 |
| Entity Tax Identification Number | 77-0105228 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 100 Innovation Place |
| Entity Address, City or Town | Santa Barbara |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 93108 |
| City Area Code | 805 |
| Local Phone Number | 566-6000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Class A [Member] | |
| Title of 12(b) Security | Class A Common Stock, $0.001 par value |
| Trading Symbol | QADA |
| Security Exchange Name | NASDAQ |
| Common Class B [Member] | |
| Title of 12(b) Security | Class B Common Stock, $0.001 par value |
| Trading Symbol | QADB |
| Security Exchange Name | NASDAQ |
