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Intangible Assets and Goodwill (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Components of intangible assets |  |  |  |
Gross Carrying Amount | $ 224,765 |  | $ 232,327 |
Accumulated Amortization | (71,592) |  | (50,372) |
Finite-lived intangible assets | 153,173 |  | 181,955 |
Amortization expense for intangible assets | 30,345 |  | 20,191 | 5,066
Minimum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 1 year |  | 1 year |
Maximum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 10 years |  | 10 years |
Existing technology |  |  |  |
Components of intangible assets |  |  |  |
Gross Carrying Amount | 191,815 | [1] | 198,377 |
Accumulated Amortization | (57,240) | [1] | (43,066) |
Finite-lived intangible assets | 134,575 | [1] | 155,311 |
Existing technology | Minimum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 3 years |  | 3 years |
Existing technology | Maximum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 10 years |  | 10 years |
Customer contracts and contractual relationships |  |  |  |
Components of intangible assets |  |  |  |
Gross Carrying Amount | 32,650 |  | 33,550 |
Accumulated Amortization | (14,194) |  | (7,148) |
Finite-lived intangible assets | 18,456 |  | 26,402 |
Customer contracts and contractual relationships | Minimum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 1 year |  | 1 year |
Customer contracts and contractual relationships | Maximum |  |  |  |
Components of intangible assets |  |  |  |
Useful Life (in years) | 10 years |  | 10 years |
Non-competition agreements |  |  |  |
Components of intangible assets |  |  |  |
Gross Carrying Amount | 300 |  | 400 |
Accumulated Amortization | (158) |  | (158) |
Finite-lived intangible assets | $ 142 |  | $ 242 |
Useful Life (in years) | 3 years |  | 3 years |
[1] | The Company recorded a non-cash intangible impairment charge of $15.4 million related to the LDT group as discussedabove which has been netted from the gross carrying amount and accumulated amortization for existing technology.

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -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 Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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