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Segment Information - Summary of Revenue by Product Type (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 segment | Dec. 31, 2012 | Dec. 31, 2011
Revenue from External Customer [Line Items] |  |  |
Number of reportable segments | 1 |  |
Total revenues | $ 461,940 | $ 476,871 | $ 490,874
Video processing products [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Total revenues | 219,667 | 219,441 | 236,567
Production and playout products [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Total revenues | 87,799 | 90,246 | 98,842
Cable edge products [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Total revenues | 69,132 | 86,637 | 85,679
Service and support [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Total revenues | $ 85,342 | $ 80,547 | $ 69,786

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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