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Goodwill and Identified Intangible Assets (Tables) | 3 Months Ended
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Mar. 29, 2013
Goodwill And Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill for the three months ended March 29, 2013 are as follows (in thousands):
Balance at beginning of period |  | $ | 212,518 |
Reduction in goodwill associated with the sale of the cable access HFC Business |  |  | (14,547 | )
Foreign currency translation adjustment |  |  | (151 | )
Balance at end of period |  | $ | 197,820 |
Summary of Goodwill and Identified Intangible Assets | The following is a summary of identified intangible assets (in thousands):
|  | March 29, 2013 |  |  | December 31, 2012 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Identifiable intangibles: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Developed core technology |  | $ | 136,145 |  |  | $ | (107,394 | ) |  | $ | 28,751 |  |  | $ | 136,145 |  |  | $ | (102,449 | ) |  | $ | 33,696 |
Customer relationships/contracts |  |  | 67,098 |  |  |  | (49,580 | ) |  |  | 17,518 |  |  |  | 67,098 |  |  |  | (48,150 | ) |  |  | 18,948 |
Trademarks and tradenames |  |  | 11,361 |  |  |  | (9,500 | ) |  |  | 1,861 |  |  |  | 11,361 |  |  |  | (9,145 | ) |  |  | 2,216 |
Maintenance agreements and related relationships |  |  | 7,100 |  |  |  | (3,816 | ) |  |  | 3,284 |  |  |  | 7,100 |  |  |  | (3,513 | ) |  |  | 3,587 |
Total identifiable intangibles |  | $ | 221,704 |  |  | $ | (170,290 | ) |  | $ | 51,414 |  |  | $ | 221,704 |  |  | $ | (163,257 | ) |  | $ | 58,447 |
Amortization Expense for Identifiable Purchased Intangible Assets | Amortization expense for the identifiable purchased intangible assets for the three months ended March 29, 2013 and March 30, 2012 was allocated as follows (in thousands):
|  | Three months ended |
|  | March 29, 2013 |  |  | March 30, 2012 |
Included in cost of revenue |  | $ | 4,945 |  |  | $ | 5,360 |
Included in operating expenses |  |  | 2,088 |  |  |  | 2,179 |
Total amortization expense |  | $ | 7,033 |  |  | $ | 7,539 |
Estimated Future Amortization Expense of Purchased Intangible Assets | The estimated future amortization expense of purchased intangible assets with definite lives is as follows (in thousands):
|  | Cost of Revenue |  |  | Operating Expenses |  |  | Total |
Year ended December 31, |  |  |  |  |  |  |  |  |  |  |  |
2013 (remaining 9 months) |  | $ | 14,288 |  |  | $ | 6,008 |  |  | $ | 20,296 |
2014 |  |  | 13,745 |  |  |  | 6,775 |  |  |  | 20,520 |
2105 |  |  | 719 |  |  |  | 5,783 |  |  |  | 6,502 |
2016 |  |  | — |  |  |  | 4,096 |  |  |  | 4,096 |
2017 |  |  | — |  |  |  | — |  |  |  | — |
Total future amortization expense |  | $ | 28,752 |  |  | $ | 22,662 |  |  | $ | 51,414 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 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) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph c -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 142 -Paragraph 47 -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 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -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. + Details
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