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Fair Value Measurements - Maturity Dates of Investments (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 27, 2014 | Dec. 31, 2013
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Fair Value Measurements, Maturity Dates Of Investments [Line Items] |  |
Amortized Cost | $ 480,807 | $ 353,109
Estimated Fair Value | 481,706 | 352,968
Less Than 1 Year [Member] |  |
Fair Value Measurements, Maturity Dates Of Investments [Line Items] |  |
Amortized Cost | 135,482 |
Estimated Fair Value | 135,603 |
1 to 5 Years [Member] |  |
Fair Value Measurements, Maturity Dates Of Investments [Line Items] |  |
Amortized Cost | 342,925 |
Estimated Fair Value | 343,703 |
6 to 10 Years [Member] |  |
Fair Value Measurements, Maturity Dates Of Investments [Line Items] |  |
Amortized Cost | 2,400 |
Estimated Fair Value | 2,400 |
Thereafter [Member] |  |
Fair Value Measurements, Maturity Dates Of Investments [Line Items] |  |
Amortized Cost | 0 |
Estimated Fair Value | $ 0 |

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph a, f, g -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 + Details
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