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ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Accounts Payable And Accrued Expenses [Line Items]    
Accounts payable $ 10,025,000us-gaap_AccountsPayableCurrent $ 7,190,000us-gaap_AccountsPayableCurrent
Accrued warranty 854,000us-gaap_ProductWarrantyAccrualClassifiedCurrent 942,000us-gaap_ProductWarrantyAccrualClassifiedCurrent
Accrued severance 120,000us-gaap_AccruedEmployeeBenefitsCurrent 180,000us-gaap_AccruedEmployeeBenefitsCurrent
Accrued compensation 409,000us-gaap_AccruedSalariesCurrent 1,360,000us-gaap_AccruedSalariesCurrent
Other current liabilities 200,000us-gaap_OtherAccruedLiabilitiesCurrent 430,000us-gaap_OtherAccruedLiabilitiesCurrent
Accounts Payable and Accrued Liabilities, Current $ 11,608,000us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent $ 10,102,000us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent [1]
[1] Derived from audited balance sheet as of December 31, 2014.