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
Mar. 31, 2018
Dec. 31, 2017
Accrued Expenses and Other Current Liabilities    
Payroll and related costs $ 4,652 $ 6,923
Employee benefits 5,520 4,701
Accrued warranty 2,747 3,262
Other 5,131 6,118
Accrued expenses and other current liabilities $ 18,050 $ 21,004