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Acquisition and Divestiture Activities (Details) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |  |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |
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Sep. 27, 2014 USD ($) | Sep. 28, 2013 USD ($) | Sep. 27, 2014 USD ($) | Sep. 28, 2013 USD ($) | Dec. 31, 2013 USD ($) | Sep. 27, 2014 Holy Stone Polytech [Member] | Sep. 27, 2014 Holy Stone Polytech [Member] USD ($) | Sep. 27, 2014 Capella [Member] USD ($) | Sep. 27, 2014 Capella [Member] USD ($) | Sep. 01, 2014 Capella [Member] USD ($) | Jul. 11, 2014 Capella [Member] USD ($) | Jul. 11, 2014 Capella [Member] TWD | Sep. 27, 2014 Patents and Acquired Technology [Member] Capella [Member] | Sep. 01, 2014 Patents and Acquired Technology [Member] Capella [Member] USD ($) | Sep. 01, 2014 Capitalized Software [Member] Capella [Member] USD ($) | Sep. 27, 2014 Customer Relationships [Member] Capella [Member] | Sep. 01, 2014 Customer Relationships [Member] Capella [Member] USD ($) | Sep. 27, 2014 Tradenames [Member] Capella [Member] | Sep. 01, 2014 Tradenames [Member] Capella [Member] USD ($)
Business Acquisition, Equity Interests Issued or Issuable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares acquired |  |  |  |  |  |  |  |  |  | 38,703,705 |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  |  | 88.95% |  |  |  |  |  |  |  |  |
Gross purchase price of acquired business |  |  |  |  |  |  |  | $ 180,167 |  |  |  |  |  |  |  |  |  |  |
Acquired cash and short-term investments |  |  |  |  |  |  |  |  |  | 50,195 |  |  |  |  |  |  |  |  |
Borrowings to fund acquisition |  |  |  |  |  |  |  | 53,000 |  |  |  |  |  |  |  |  |  |  |
Remaining acquisition price to be paid |  |  |  |  |  |  |  |  |  | 22,000 |  |  |  |  |  |  |  |  |
Business Acquisition, Transaction Costs |  |  |  |  |  |  |  |  |  | 613 |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Useful Life |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  | 7 years |  | 7 years |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total |  |  |  |  |  |  |  |  |  | 74,481 |  |  |  | 14,870 | 101 |  | 54,400 |  | 5,110
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total |  |  |  |  |  |  |  |  |  | 4,134 |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent |  |  |  |  |  |  |  |  |  | (17,626) |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other |  |  |  |  |  |  |  |  |  | (454) |  |  |  |  |  |  |  |  |
Goodwill | 147,436 |  | 147,436 |  | 43,132 |  |  |  |  | 97,706 |  |  |  |  |  |  |  |  |
Acquisition of business, net of cash acquired |  |  | 198,186 | 23,034 |  |  | 20,776 |  | 177,410 |  |  |  |  |  |  |  |  |  |
Business Acquisition, Share Price |  |  |  |  |  |  |  |  |  |  |  | 139 |  |  |  |  |  |  |
Business Acquisition, Name of Acquired Entity |  |  |  |  |  | Holy Stone Polytech Co., Ltd. |  | Capella Microsystems (Taiwan) Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Date of Acquisition Agreement |  |  |  |  |  |  |  | Jul. 11, 2014 |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Effective Date of Acquisition |  |  |  |  |  | Jun. 11, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |
Offered purchase price |  |  |  |  |  |  |  |  |  |  | 205,000 |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  |  |  |  |  | 3,736 |  | 74,481 |  |  |  |  |  |  |  |  |  |
Goodwill related to acquisitions |  |  |  |  |  |  | 7,736 |  | 97,706 |  |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  |  |  |  |  |  |  | 47,438 |  |  |  |  |  |  |  |  |
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value |  |  |  |  |  |  |  |  |  | 21,895 |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net, Total |  |  |  |  |  |  |  |  |  | 101,599 |  |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Total |  |  |  |  |  |  |  |  |  | (6,374) |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Revenue | 643,917 | 619,580 | 1,911,246 | 1,817,633 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Net Income (Loss) | $ 26,688 | $ 33,182 | $ 85,713 | $ 98,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ 0.18 | $ 0.23 | $ 0.58 | $ 0.68 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ 0.17 | $ 0.22 | $ 0.56 | $ 0.65 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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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=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences due after one year or 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=39739317&loc=d3e4845-128472 + Details
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- Definition The amount of financial assets (as defined) recognized as of 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=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -Glossary Financial Asset -URI http://asc.fasb.org/extlink&oid=6512957 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired 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=39739317&loc=d3e4845-128472 + Details
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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + 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=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
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