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Summary of Significant Accounting Policies - Summary of Intangible Assets (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Summary of Intangible Assets  
Intangible assets, Cost $ 540
Intangible assets, Accumulated Amortization 322
Intangible assets, Net Value $ 218
Intellectual property  
Summary of Intangible Assets  
Finite lived intangible assets, Useful Lives 3 years
Finite lived intangible assets, Cost $ 322
Finite lived intangible assets, Accumulated Amortization 322
License  
Summary of Intangible Assets  
Indefinite lived intangible assets, Cost 218
Indefinite lived intangible assets, Net Value $ 218