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Acquisitions - Summary of Business Acquisition, Pro Forma Information (Detail) - Medical Surgery Technologies Ltd.
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
Business Acquisition [Line Items]  
Revenue $ 24,170
Net loss $ (64,365)
Net loss per share ( in dollar per share) | $ / shares $ (0.31)