Quarterly report pursuant to Section 13 or 15(d)

Extab Acquisition - Summary of Final Purchase Price Allocation Based on Estimated Fair Value (Detail)

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Extab Acquisition - Summary of Final Purchase Price Allocation Based on Estimated Fair Value (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
May 14, 2015
Business Acquisition [Line Items]      
Goodwill $ 1,034 $ 1,034  
Extab [Member]      
Business Acquisition [Line Items]      
Cash     $ 6
License agreements     3,117
Goodwill     1,034
Other current liabilities     (456)
Deferred tax liability     (1,034)
Non-controlling interest     (667)
Purchase Price     $ 2,000