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Intangible Assets and Goodwill (Details 3) (USD $) |  |  |  |  | 12 Months Ended |  |  | 1 Months Ended | 12 Months Ended |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Existing technology | Dec. 31, 2011 Existing technology | Dec. 31, 2012 Favorable contracts. | Dec. 31, 2011 Favorable contracts. | Dec. 31, 2012 Non-competition agreements | Dec. 31, 2011 Non-competition agreements | Jun. 30, 2011 Group of purchased intangible assets | Dec. 31, 2012 Other non-CRI related Patents | Dec. 31, 2011 Other non-CRI related Patents | Dec. 31, 2010 Other non-CRI related Patents | Sep. 30, 2012 LDT | Dec. 31, 2012 LDT
Identified intangible assets assumed in the acquisition of CRI |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment charge |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,400,000 | $ 15,400,000
Estimated Useful Life (in years) |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |
Cash received related to intangible assets |  |  |  |  |  | 5,100,000 | 2,300,000 |  |  |  |  |  |  |  |
Purchased patents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents Acquired |  |  |  |  |  |  |  |  |  |  | 1,700,000 | 4,200,000 | 10,000,000 |  |
Cash paid in 2011 related to other non-CRI intangible assets |  |  |  |  |  |  |  |  |  |  | 1,200,000 |  |  |  |
Estimated future amortization expense of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 | 32,417,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 27,310,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 26,660,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 25,766,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | 24,125,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 16,895,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived intangible assets | $ 153,173,000 | $ 181,955,000 | $ 134,575,000 | [1] | $ 155,311,000 | $ 4,800,000 | $ 9,900,000 | $ 142,000 | $ 242,000 |  |  |  |  |  |
[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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