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ACCRUED WARRANTY (Details)
9 Months Ended
Sep. 30, 2017
USD ($)
Deferred Revenue Arrangement [Line Items]  
Product warranty term 12 months
Movement in Standard Product Warranty Accrual [Roll Forward]  
Beginning Balance $ 518,000
Additions 83,000
Claim and reversals (16,000)
Ending Balance 585,000
Extended Warranties [Member]  
Deferred Revenue Arrangement [Line Items]  
Deferred Revenue $ 500,000
Minimum [Member]  
Deferred Revenue Arrangement [Line Items]  
Extended Warranty Period 12 months
Maximum [Member]  
Deferred Revenue Arrangement [Line Items]  
Extended Warranty Period 15 months