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BALANCE SHEET DETAILS - Other Long-term Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Other long-term liabilities    
Non-current income tax payable $ 1,327 $ 2,530
Other long-term liabilities 1,170 1,123
Total other long-term liabilities $ 2,497 $ 3,653