ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details 1) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Accrued warranty reserve, beginning of period	$ 520,000	$ 752,000
Accrual for product warranties issued	337,000	313,000
Product replacements and other warranty expenditures	(222,000)	(107,000)
Expiration of warranties	(173,000)	(252,000)
Accrued warranty reserve, end of period	$ 462,000	$ 706,000