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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Apr. 01, 2012
Net revenues: |  |  |  |
Products | $ 214,300 |  | $ 330,891 |
Services | 66,067 |  | 65,777 |
Total net revenues | 280,367 |  | 396,668 |
Cost of revenues: |  |  |  |
Cost of products | 96,793 |  | 174,001 |
Cost of services | 30,157 |  | 31,741 |
Total cost of revenues | 126,950 |  | 205,742 |
Gross profit | 153,417 |  | 190,926 |
Operating expenses: |  |  |  |
Engineering and development | 62,751 |  | 61,279 |
Selling and administrative | 67,890 |  | 66,633 |
Acquired intangible assets amortization | 18,036 |  | 18,429 |
Restructuring and other | 332 |  | (1,825) |
Total operating expenses | 149,009 |  | 144,516 |
Income from operations | 4,408 |  | 46,410 |
Interest income | 1,072 |  | 893 |
Interest expense and other | (6,906) |  | (6,059) |
(Loss) income before income taxes | (1,426) | [1],[2] | 41,244 | [1],[2]
Income tax (benefit) provision | (8,015) |  | 7,680 |
Net income | $ 6,589 |  | $ 33,564 |
Net income per common share: |  |  |  |
Basic | $ 0.03 |  | $ 0.18 |
Diluted | $ 0.03 |  | $ 0.15 |
Weighted average common share-basic | 189,686 |  | 185,838 |
Weighted average common share-diluted | 234,757 |  | 231,153 |
[1] | Interest income and interest expense and other are included in Corporate and Eliminations.
[2] | Included in the income (loss) before income taxes for each of the segments are charges and credits for the three months ended March 31, 2013 and April 1, 2012 that include restructuring and other, and provision for excess and obsolete inventory, as follows:

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Paragraph 5A -Chapter 4 -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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6386349&loc=d3e3636-108311 + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a -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 Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 07-4 -Paragraph 4 -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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