Goodwill and Purchased Intangible Assets	3 Months Ended
Mar. 31, 2012
Goodwill and Purchased Intangible Assets [Abstract]
Goodwill and Purchased Intangible Assets	4. Goodwill and Purchased Intangible Assets Goodwill and indefinite-life intangible assets are tested for impairment on an annual basis or more frequently upon the occurrence of circumstances that indicate that goodwill and indefinite-life intangible assets may be impaired. In the fourth quarter of fiscal 2011, Intevac performed its annual impairment analysis and the results of the analysis indicated that Intevac’s goodwill and purchased intangible assets with an indefinite useful life were not impaired. At March 31, 2012, Intevac had a total of $18.4 million of goodwill and $4.1 million of indefinite-life intangible assets. At March 31, 2012, $10.5 million of goodwill is attributed to the Equipment segment and $7.9 million of goodwill is attributed to the Intevac Photonics segment. Total amortization expense of finite-lived intangibles for the three months ended March 31, 2012 was $136,000. As of March 31, 2012, future amortization expense is expected to be $406,000 for the remainder of 2012, $541,000 for 2013, $363,000 for 2014, $284,000 for 2015, $281,000 for 2016 and $310,000 thereafter. Intangible assets by segment are as follows: Equipment: $5.5 million and Intevac Photonics: $840,000.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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