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, 2019
Dec. 31, 2018
Accrued Expenses and Other Current Liabilities    
Payroll and related costs $ 5,468 $ 9,607
Employee benefits 5,340 5,281
Accrued warranty 3,140 3,662
Other 4,462 4,756
Accrued expenses and other current liabilities $ 18,410 $ 23,306