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Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Schedule of Intangible Assets Disclosure [Line Items] |  |
Amortizable intangible assets, gross carrying amount | $ 138,732 | $ 100,692
Amortizable intangible assets, accumulated amortization | (86,466) | (73,699)
Amortizable intangible assets, net carrying amount | 52,266 | 26,993
Gross carrying amount | 151,759 | 113,719
Accumulated amortization | (86,466) | (73,699)
Net carrying amount | 65,293 | 40,020
Weighted Average Remaining Life (Years) | 12 years 3 months 18 days | 5 years 4 months 24 days
Patents and acquired technology |  |
Schedule of Intangible Assets Disclosure [Line Items] |  |
Amortizable intangible assets, gross carrying amount | 68,500 | 61,667
Amortizable intangible assets, accumulated amortization | (56,327) | (50,904)
Amortizable intangible assets, net carrying amount | 12,173 | 10,763
Weighted Average Remaining Life (Years) | 5 years 3 months 18 days | 3 years 10 months 24 days
Customer Relationships |  |
Schedule of Intangible Assets Disclosure [Line Items] |  |
Amortizable intangible assets, gross carrying amount | 55,585 | 33,245
Amortizable intangible assets, accumulated amortization | (24,340) | (18,981)
Amortizable intangible assets, net carrying amount | 31,245 | 14,264
Weighted Average Remaining Life (Years) | 13 years 10 months 24 days | 6 years 6 months
Trademarks, trade names and other |  |
Schedule of Intangible Assets Disclosure [Line Items] |  |
Amortizable intangible assets, gross carrying amount | 13,378 | 5,780
Amortizable intangible assets, accumulated amortization | (4,530) | (3,814)
Amortizable intangible assets, net carrying amount | 8,848 | 1,966
Weighted Average Remaining Life (Years) | 16 years 4 months 24 days | 6 years 2 months 12 days
Customer Backlog |  |
Schedule of Intangible Assets Disclosure [Line Items] |  |
Amortizable intangible assets, gross carrying amount | 1,269 |
Amortizable intangible assets, accumulated amortization | (1,269) |
Weighted Average Remaining Life (Years) | 0 years |
Trade Names |  |
Schedule of Intangible Assets Disclosure [Line Items] |  |
Non-amortizable intangible assets, gross carrying amount | 13,027 | 13,027
Non-amortizable intangible assets, accumulated amortization |  |
Non-amortizable intangible assets, net carrying amount | $ 13,027 | $ 13,027

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