Fair Value Measurements and Disclosures - Textual (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 26, 2015	Dec. 27, 2014
Forward Foreign Currency Contracts [Member]
Fair Value Measurements and Disclosures (Textual) [Abstract]
Derivative term	30 days
Forward Foreign Currency Contracts [Member] \| Other Income (Expense), Net [Member]
Fair Value Measurements and Disclosures (Textual) [Abstract]
Gain (loss) on settlement of derivatives	$ (0.3)
Fair Value, Measurements, Recurring [Member] \| Zygo Corporation [Member]
Fair Value Measurements and Disclosures (Textual) [Abstract]
Liabilities resulting from the acquisition of certain assets from acquisitions, measured at fair value	1.5	$ 2.4
Current liability at fair value	0.9	1.4
Long-term liability at fair value	$ 0.6	$ 1.0

Fair value measurements and disclosures.

No definition available.

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- Definition

Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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- Definition

Amount of liabilities assumed at the acquisition date.

+ References

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- Definition

Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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