| Document And Entity Information | Sep. 22, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Current Fiscal Year End Date | --12-31 |
| Document Period End Date | Sep. 22, 2022 |
| Entity Registrant Name | GIGA TRONICS INC |
| Entity Central Index Key | 0000719274 |
| Entity Emerging Growth Company | false |
| Securities Act File Number | 001-14605 |
| Entity Incorporation, State or Country Code | CA |
| Entity Tax Identification Number | 94-2656341 |
| Entity Address, Address Line One | 7272 E. Indian School Rd, |
| Entity Address, Address Line Two | Suite 540 |
| Entity Address, City or Town | Scottsdale |
| Entity Address, State or Province | AZ |
| Entity Address, Postal Zip Code | 85251 |
| City Area Code | (833) |
| Local Phone Number | 457 6667 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, No par value |
| Trading Symbol | GIGA |
| Security Exchange Name | NONE |
| Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Preferred Share Purchase Rights |
| No Trading Symbol Flag | true |
| Security Exchange Name | NONE |
