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Intangible Assets | 12 Months Ended
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Dec. 31, 2011
Intangible Assets [Abstract] |
Intangible Assets | 3. Intangible Assets Intangible assets are carried at cost, less accumulated amortization, as disclosed in the following tables (in thousands):
|  | December 31, 2011 |  |  | December 31, 2010 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net |
Core developed technology |  | $ | 52,694 |  |  | $ | (31,447 | ) |  | $ | 21,247 |  |  | $ | 27,200 |  |  | $ | (26,747 | ) |  | $ | 453 |
Customer relationships |  |  | 54,740 |  |  |  | (12,209 | ) |  |  | 42,531 |  |  |  | 3,700 |  |  |  | (3,638 | ) |  |  | 62 |
Purchase order backlog |  |  | 4,260 |  |  |  | (4,260 | ) |  |  | — |  |  |  | 1,700 |  |  |  | (1,700 | ) |  |  | — |
Trade name |  |  | 2,290 |  |  |  | (2,290 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total amortizable intangible assets |  |  | 113,984 |  |  |  | (50,206 | ) |  |  | 63,778 |  |  |  | 32,600 |  |  |  | (32,085 | ) |  |  | 515 |
In-process technology |  |  | 16,270 |  |  |  | — |  |  |  | 16,270 |  |  |  | — |  |  |  | — |  |  |  | — |
Total intangible assets, excluding goodwill |  | $ | 130,254 |  |  | $ | (50,206 | ) |  | $ | 80,048 |  |  | $ | 32,600 |  |  | $ | (32,085 | ) |  | $ | 515 |
The amortization expense was $18.1 million, $6.2 million and $6.2 million for the years ended December 31, 2011, 2010, 2009, respectively. Expected future amortization for the fiscal years indicated is as follows (in thousands):
2012 |  | $ | 15,307 |
2013 |  |  | 15,307 |
2014 |  |  | 15,307 |
2015 |  |  | 15,306 |
2016 |  |  | 2,551 |
Total |  | $ | 63,778 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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