Accounts Payable and Accrued Expenses (Tables)

9 Months Ended

Sep. 30, 2016

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of Accounts Payable and Accrued Liabilities

Accounts payable and accrued expenses consist of the following:

	December 31, 2015		September 30, 2016
			(Unaudited)
Accounts payable	$	8,026,000	$	6,871,000
Accrued warranty		614,000		508,000
Accrued compensation		418,000		289,000
Other current liabilities		115,000		54,000
	$	9,173,000	$	7,722,000

Schedule of Product Warranty Liability

The following table summarizes warranty activity for the nine-month periods ended September 30, 2015 and 2016:

	Nine Months Ended September 30,
	2015			2016
Accrued warranty reserve, beginning of period	$	942,000		$	614,000
Accrual for product warranties issued		371,000			387,000
Product replacements and other warranty expenditures		(162,000	)		(245,000	)
Expiration of warranties		(644,000	)		(248,000	)
Accrued warranty reserve, end of period	$	507,000		$	508,000