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Certain Balance Sheet Accounts - Summary of Non-current Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Statement Of Financial Position [Abstract]    
Deferred tax liability $ 204 $ 97
Deferred rent 6,436 6,501
Other 2,596 2,810
Total $ 9,236 $ 9,408