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Symphony Dynamo, Inc. - Additional Information (Detail) - Symphony Dynamo, Inc. - USD ($) | 1 Months Ended | 12 Months Ended
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Nov. 30, 2009 | Dec. 31, 2016
Business Acquisition Equity Interests Issued Or Issuable [Line Items] |  |
Business acquisition contingent consideration percentage | 50.00% |
Business acquisition upfront payment | $ 50,000,000 |
Milestone payments |  | $ 0

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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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