Consideration Receivable from Sale of Assets

No definition available.

Name:	ivac_ConsiderationReceivableFromSaleOfAssets
Namespace Prefix:	ivac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Disposition of Assets, Earn-Out Payment Receivables Per Year

+ References

No definition available.

+ Details

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Namespace Prefix:	ivac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Disposition of Assets, Maximum Earn-Out Payment Receivables

+ References

No definition available.

+ Details

Name:	ivac_DispositionOfAssetsMaximumEarnoutPaymentReceivables
Namespace Prefix:	ivac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	ivac_DivestituresLineItems
Namespace Prefix:	ivac_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of Earn Out Payments Receivable

+ References

No definition available.

+ Details

Name:	ivac_PercentageOfEarnOutPaymentsReceivable
Namespace Prefix:	ivac_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period Of Earnout Payments

+ References

No definition available.

+ Details

Name:	ivac_PeriodOfEarnoutPayments
Namespace Prefix:	ivac_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate amount of other income amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5

+ Details

Name:	us-gaap_OtherNonoperatingIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from the sale of other tangible or intangible assets used to produce goods or deliver services not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Divestitures - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended	0 Months Ended		0 Months Ended
Divestitures - Additional Information (Detail) (USD $)	Jun. 28, 2014	Sep. 28, 2013	Mar. 29, 2013 DeltaNu	Mar. 29, 2013 DeltaNu	Mar. 29, 2013 DeltaNu Maximum	Mar. 29, 2013 DeltaNu Minimum
Divestitures [Line Items]
Maximum consideration receivable from assets sold					$ 1,500,000
Proceeds from sale of assets		500,000	500,000
Percentage of Earn-out receivable				5.00%
Earn-out period			5 years
Annual minimum earn-out payment receivable						100,000
Maximum earn-out payments during payment period				1,000,000
Earn-out payment received	$ 75,000