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Commitments and Contingencies - Summaries of Purchase Obligations (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Total $ 621
Payments Due, Less Than 1 Year 621
Payments Due, 2-3 Years 0
Payments Due, 3-5 Years 0
Payments Due, More Than 5 Years $ 0