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Consolidated Balance Sheet Components - Other Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Other Liabilities Noncurrent [Abstract]    
Long-term deferred rent $ 2,111 $ 1,926
Deferred tax liability 1,265 1,145
Uncertain Tax Positions 2,446 1,236
Other 815 208
Total other liabilities $ 6,637 $ 4,515