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Segment and Geographic Information - Information About Segments (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |
Product revenue | $ 326,786 | $ 295,588 | $ 297,310
Service revenue | 27,100 | 28,691 | 24,604
Depreciation and amortization | 11,102 | 10,858 | 9,756
Goodwill and intangibles | 96,412 | 96,459 | 100,939
Operating income | 86,368 | 83,407 | 85,355
Operating Segments [Member] | MVSD [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenue | 298,186 | 263,308 | 264,956
Service revenue | 9,465 | 10,388 | 8,717
Depreciation and amortization | 9,569 | 9,505 | 8,445
Goodwill and intangibles | 90,718 | 90,390 | 94,322
Operating income | 99,383 | 89,378 | 94,201
Operating Segments [Member] | SISD [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenue | 28,600 | 32,280 | 32,354
Service revenue | 17,635 | 18,303 | 15,887
Depreciation and amortization | 1,078 | 963 | 908
Goodwill and intangibles | 5,694 | 6,069 | 6,617
Operating income | 8,990 | 11,941 | 10,301
Reconciling Items [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 455 | 390 | 403
Operating income | $ (22,005) | $ (17,912) | $ (19,147)

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 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=31042434&loc=d3e3602-108585 + Details
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- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and 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(a)) -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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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and 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(d)) -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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