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 ($)
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Accrued Expenses and Other Current Liabilities            
Payroll and related costs $ 5,264,000   $ 3,860,000      
Employee benefits 5,686,000   7,716,000      
Accrued warranty 5,641,000 $ 5,188,000 6,279,000 $ 3,634,000.000 $ 2,930,000 $ 3,808,000.000
Amounts due to sellers 3,887,000   11,824,000      
Other 4,785,000   3,991,000      
Accrued expenses and other current liabilities $ 25,263,000   $ 33,670,000