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Intangible Assets Acquired from Acquisition (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Intangible Assets [Line Items] |  |
Accumulated Impairment | $ (30,808) | $ (30,808)
FCI, Centronix and Shannon |  |
Intangible Assets [Line Items] |  |
Cost | 33,758 | 25,377
Accumulated Impairment | (4,474) | (4,474)
Accumulated Amortization | (21,954) | (20,903)
Net Carrying Amount | 7,330 |
FCI, Centronix and Shannon | Core Technology |  |
Intangible Assets [Line Items] |  |
Cost | 15,809 | 15,809
Accumulated Impairment | (4,474) | (4,474)
Accumulated Amortization | (11,335) | (11,335)
FCI, Centronix and Shannon | Customer Relationships |  |
Intangible Assets [Line Items] |  |
Cost | 8,325 | 8,325
Accumulated Amortization | (8,325) | (8,325)
FCI, Centronix and Shannon | Order backlog |  |
Intangible Assets [Line Items] |  |
Cost | 1,243 | 1,243
Accumulated Amortization | (1,243) | $ (1,243)
FCI, Centronix and Shannon | Development technology |  |
Intangible Assets [Line Items] |  |
Cost | 8,381 |
Accumulated Amortization | (1,051) |
Net Carrying Amount | $ 7,330 |

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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