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Business Combinations - Summary of Unaudited Pro Forma Financial Information (Detail) - Corebiome Inc. and Novosanis NV [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Business Acquisition [Line Items] |  |  |  |
Revenue | $ 35,989 | $ 46,628 | $ 104,937 | $ 133,150
Net income | $ 13,078 | $ 7,649 | $ 14,218 | $ 7,335
Net income per share, basic and diluted | $ 0.21 | $ 0.12 | $ 0.23 | $ 0.11

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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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