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Intangible Assets, Net - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Finite Lived Intangible Assets Net [Abstract] |  |  |  |
Cost of sales - amortization of intangible assets | $ 2,300 | $ 2,300 | $ 4,570 | $ 4,715

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- Definition Amount of expense for allocation of cost of intangible asset over its useful life directly used in production of good and rendering of service. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(2)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- References No definition available. + Details
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