| Component: (Network and Table) | |
|---|---|
| Network | 190 - Disclosure - Subsequent Event - Additional Information (Detail) (http://www.intevac.com/taxonomy/role/DisclosureSubsequentEventAdditionalInformation) |
| Table | Subsequent Event [Table] |
| Reporting Entity [Axis] | 0001001902 (http://www.sec.gov/CIK) |
| Period [Axis] | 2013-01-01 - 2013-02-01 |
| Legal Entity [Axis] | Entity [Domain] |
| Subsequent Event Type [Axis] | Subsequent Event [Member] |
| Subsequent Event [Line Items] | Range [Axis] | ||
|---|---|---|---|
| Minimum [Member] | Maximum [Member] | Range [Member] | |
Reduction in global workforce | .13 | ||
Expected reduction in workforce costs | 4,500,000 | 5,000,000 | |
Severance pay expenses and related cash expenses | 500,000 | ||