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Acquisitions (Intangible Assets) (Details) (Rudd Lighting, Inc. [Member], USD $) | 3 Months Ended | 7 Months Ended |  | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended
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Mar. 25, 2012 | Mar. 25, 2012 | Aug. 17, 2011 | Aug. 17, 2011 Developed Technology Rights [Member] | Aug. 17, 2011 Developed Technology Rights [Member] Minimum [Member] years | Aug. 17, 2011 Developed Technology Rights [Member] Maximum [Member] years | Aug. 17, 2011 Customer Relationships [Member] | Aug. 17, 2011 Customer Relationships [Member] Minimum [Member] years | Aug. 17, 2011 Customer Relationships [Member] Maximum [Member] years | Aug. 17, 2011 Trade Names [Member] years | Aug. 17, 2011 In Process Research and Development [Member] | Aug. 17, 2011 In Process Research and Development [Member] Minimum [Member] years | Aug. 17, 2011 In Process Research and Development [Member] Maximum [Member] years | Aug. 17, 2011 Noncompete Agreements [Member] years
Acquired Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Acquired Intangible Assets | $ 5,200,000 | $ 12,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets |  |  |  | 96,300,000 |  |  | 84,820,000 |  |  | 70,000 | 15,050,000 | [1] |  |  | 9,800,000
Acquired indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  | 82,880,000 |  |  |  |  |
Total identifiable assets |  |  | $ 288,920,000 |  |  |  |  |  |  |  |  |  |  |  |
Acquired finite-lived intangible assets, estimated life in years |  |  |  |  | 7 | 10 |  | 7 | 20 | 3 |  |  | 6 | 7 | 5
[1] | Initially, in-process research and development ("IPR&D") is classified as indefinite-lived assets until completion or abandonment. Therefore, amortization of IPR&D does not begin until the technological and market risk(s) no longer exist. During the interim, IPR&D intangibles are subject to annual testing for impairment or when there are indicators of impairment.

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- Definition The aggregate cost of a major finite-lived and indefinite-lived intangible asset class acquired, during the period, either individually or as part of a group of assets (in either an asset acquisition or business combination). + References No definition available. + Details
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- Definition The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The aggregate cost of a major indefinite-lived intangible asset class acquired, during the period, either individually or as part of a group of assets (in either an asset acquisition or business combination). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of acquired intangible assets. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. + References No definition available. + Details
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