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, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Accrued Expenses and Other Current Liabilities        
Payroll and related costs $ 3,193 $ 2,857    
Employee benefits 2,410 4,522    
Accrued warranty 2,930 3,808 2,859 3,628
Other 3,672 3,231    
Accrued expenses and other current liabilities $ 12,205 $ 14,418