Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Data

Year Ended December 31, 2017	1st Quarter			2nd Quarter			3rd Quarter			4th Quarter
Net sales	$	4,767,000		$	5,849,000		$	7,723,000		$	8,091,000
Gross profit		629,000			1,498,000			2,743,000			3,531,000
Net income (loss)		(1,191,000	)		(534,000	)		451,000			635,000
Net income (loss) per share:
Basic	$	(0.10	)	$	(0.05	)	$	0.04		$	0.05
Diluted	$	(0.10	)	$	(0.05	)	$	0.04		$	0.05
Year Ended December 31, 2016	1st Quarter			2nd Quarter			3rd Quarter			4th Quarter
Net sales	$	6,078,000		$	6,617,000		$	6,469,000		$	5,748,000
Gross profit		1,967,000			2,116,000			2,000,000			980,000
Net loss		(322,000	)		(87,000	)		(167,000	)		(710,000	)
Net loss per share:
Basic	$	(0.03	)	$	(0.01	)	$	(0.01	)	$	(0.06	)
Diluted	$	(0.03	)	$	(0.01	)	$	(0.01	)	$	(0.06	)