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Balance Sheet Details - Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Payables And Accruals [Abstract]    
Accrued salaries, wages and benefits $ 1,710 $ 684
Other accrued expenses 2,885 2,248
Accrued expenses $ 4,595 $ 2,932