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Balance Sheet Details - Schedule of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Other Liabilities Current [Abstract]    
Contingent consideration - acquisitions $ 1,422 $ 1,422
Customer deposits 888 1,135
Accrued inventory 1,082 1,103
Other 4,460 3,883
Total other current liabilities $ 7,852 $ 7,543