Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Current Liabilities (Details)

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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Accrued Expenses and Other Current Liabilities    
Cash $ 3,652  
Payroll and related costs 10,195 $ 6,923
Employee benefits 5,347 4,701
Accrued warranty 3,431 3,262
Other 9,387 6,118
Accrued expenses and other current liabilities $ 28,360 $ 21,004