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Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |
Amortization expenses | $ 698 | $ 6
Purchased intellectual property litigation costs and internally developed software ,capitalized | 3,428 |
Estimated amortization expenses of intangible assets for 2016 | 10,282 |
Estimated amortization expenses of intangible assets for 2017 | 10,455 |
Estimated amortization expenses of intangible assets for 2018 | 10,455 |
Estimated amortization expenses of intangible assets for 2019 | 10,455 |
Estimated amortization expenses of intangible assets for 2020 | 10,265 |
Estimated amortization expenses of intangible assets after 2020 | 35,533 |
Purchased IP and Capitalized Litigation Costs [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Unamortized intangible assets | 1,384 |
Purchased intellectual property litigation costs and internally developed software ,capitalized | 1,198 |
Software Developed for Internal Use [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Unamortized intangible assets | 2,090 |
Purchased intellectual property litigation costs and internally developed software ,capitalized | $ 2,230 |

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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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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + 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)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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