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Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 3

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-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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No definition available.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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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

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Supplementary Information - Additional Information (Details) (USD $)	3 Months Ended				12 Months Ended			1 Months Ended
	Dec. 31, 2014	Sep. 26, 2014	Sep. 27, 2013	Jun. 28, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 27, 2013	May 31, 2013	Jul. 31, 2014
Quarterly Financial Information [Line Items]
Impairment of goodwill and intangible assets	$ 41,442,000				$ 41,442,000	$ 0	$ 0
Gain (Loss) on sale of business, net of tax	(1,405,000)	(321,000)	(281,000)	(311,000)	(1,726,000)	(592,000)	2,255,000
Semiconductor Systems
Quarterly Financial Information [Line Items]
Proceeds from sale of net assets and liabilities				8,000,000					9,700,000
Gain (Loss) on sale of business, net of tax				(300,000)		(400,000)		(300,000)
Scientific Lasers Business
Quarterly Financial Information [Line Items]
Proceeds from sale of net assets and liabilities										6,500,000
Gain (Loss) on sale of business, net of tax					$ (1,700,000)