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Business Combination - Summary of Identified Intangible Assets Acquired at Acquisition Date (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
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Apr. 14, 2016 | Dec. 31, 2016
Customer Relationships [Member] |  |
Business Acquisition [Line Items] |  |
Estimated useful life of identified intangible asset |  | 14 years
Trademarks [Member] |  |
Business Acquisition [Line Items] |  |
Estimated useful life of identified intangible asset |  | 14 years
Acquired Contracts [Member] |  |
Business Acquisition [Line Items] |  |
Estimated useful life of identified intangible asset |  | 1 year 3 months 18 days
Allenex [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 31,560 |
Allenex [Member] | Customer Relationships [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 12,650 |
Estimated useful life of identified intangible asset | 15 years |
Allenex [Member] | Developed Technology [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 11,650 |
Estimated useful life of identified intangible asset | 10 years |
Allenex [Member] | In-process technology [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 4,510 |
Estimated useful life of identified intangible asset | 15 years |
Allenex [Member] | Trademarks [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 2,260 |
Estimated useful life of identified intangible asset | 15 years |
Allenex [Member] | Acquired Contracts [Member] |  |
Business Acquisition [Line Items] |  |
Estimated fair value of identified intangible assets | $ 490 |
Allenex [Member] | Contract-Based Intangible Assets |  |
Business Acquisition [Line Items] |  |
Estimated useful life of identified intangible asset | 2 years |

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- Definition Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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