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Discontinued Operations and Assets Held for Sale - Narrative (Details) (USD $)
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3 Months Ended | |
|---|---|---|
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Mar. 31, 2015
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Mar. 31, 2014
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Proceeds from sale of business | $ 0 | $ 50,298,000 |
| DivX and MainConcept [Member] | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||
| Proceeds from sale of business | 52,500,000 | |
| Additional payments based on revenue milestones | $ 22,500,000 | |
| Revenue milestone term | 3 years | |