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Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Beginning Balance | $ 12,819 | $ 16,733 |  |
Net foreign currency translation | (38) | (80) |  |
Amortization expense | (4,942) | (4,532) | $ (3,325) |
Ending Balance | 37,970 | 12,819 | 16,733 |
December 31, 2015 balance at cost |  |  |  | $ 61,680
Accumulated amortization |  |  |  | (23,710)
Ending Balance | 12,819 | 16,733 | 16,733 | 37,970
Other Acquisitions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 131 | 698 |  |
Silanis Technology Inc [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 30,000 |  |  |
Amortization expense | (6,060) | (6,060) |  |
Capitalized Technology [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Beginning Balance | 10,216 | 13,776 |  |
Net foreign currency translation | (15) | (38) |  |
Amortization expense | (4,569) | (4,053) |  |
Ending Balance | 34,632 | 10,216 | 13,776 |
December 31, 2015 balance at cost |  |  |  | 57,035
Accumulated amortization |  |  |  | (22,403)
Ending Balance | 10,216 | 13,776 | 13,776 | 34,632
Capitalized Technology [Member] | Other Acquisitions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 0 | 531 |  |
Capitalized Technology [Member] | Silanis Technology Inc [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 29,000 |  |  |
Patents and Trademarks [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Beginning Balance | 1,929 | 1,961 |  |
Net foreign currency translation | 0 | (1) |  |
Amortization expense | (146) | (198) |  |
Ending Balance | 2,214 | 1,929 | 1,961 |
December 31, 2015 balance at cost |  |  |  | 2,863
Accumulated amortization |  |  |  | (649)
Ending Balance | 1,929 | 1,961 | 1,961 | 2,214
Patents and Trademarks [Member] | Other Acquisitions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 131 | 167 |  |
Patents and Trademarks [Member] | Silanis Technology Inc [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 300 |  |  |
Other [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Beginning Balance | 674 | 996 |  |
Net foreign currency translation | (23) | (41) |  |
Amortization expense | (227) | (281) |  |
Ending Balance | 1,124 | 674 | 996 |
December 31, 2015 balance at cost |  |  |  | 1,782
Accumulated amortization |  |  |  | (658)
Ending Balance | 674 | 996 | $ 996 | $ 1,124
Other [Member] | Other Acquisitions [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | 0 | $ 0 |  |
Other [Member] | Silanis Technology Inc [Member] |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Additions | $ 700 |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 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=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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