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Intangible Assets and Goodwill (Details 3) (USD $) | 12 Months Ended |  |  | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2013 Existing technology | Dec. 31, 2012 Existing technology | Dec. 31, 2013 Favorable contracts. | Dec. 31, 2012 Favorable contracts. | Dec. 31, 2013 Non-competition agreements | Dec. 31, 2012 Non-competition agreements | Jun. 30, 2011 Group of purchased intangible assets | Dec. 31, 2012 Other non-CRI related Patents | Dec. 31, 2013 Other non-CRI related Patents | Dec. 31, 2011 Other non-CRI related Patents | Dec. 31, 2013 LDT | Sep. 30, 2012 LDT | Dec. 31, 2012 LDT
Identified intangible assets assumed in the acquisition of CRI |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 | $ 15,400,000 | $ 15,400,000
Estimated Useful Life (in years) |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |
Cash received related to intangible assets |  |  |  |  |  | 2,300,000 | 5,100,000 |  |  |  |  |  |  |  |  |
Purchased patents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents Acquired |  |  |  |  |  |  |  |  |  |  | 1,700,000 | 2,500,000 | 4,200,000 |  |  |
Cash paid in 2011 related to other non-CRI intangible assets |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |  |
Amortization of intangible assets | 28,909,000 | 30,345,000 | 20,191,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated future amortization expense of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 27,487,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 25,348,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 24,356,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 23,734,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 | 10,827,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 5,420,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets | $ 117,172,000 | $ 153,173,000 |  | $ 105,241,000 | $ 134,575,000 | $ 1,000,000 | $ 4,800,000 | $ 42,000 | $ 142,000 |  |  |  |  |  |  |

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