Quarterly Financial Data

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

Quarterly data for the years ended December 31, 2018 and 2017 was as follows:

Year Ended December 31, 2018	1st Quarter		2nd Quarter		3rd Quarter		4th Quarter
Net sales	$	7,419,000	$	8,245,000	$	9,455,000	$	8,117,000
Gross profit		2,746,000		3,005,000		3,563,000		3,247,000
Net income		164,000		184,000		645,000		406,000
Net income per share:
Basic	$	0.01	$	0.02	$	0.05	$	0.04
Diluted	$	0.01	$	0.02	$	0.05	$	0.04

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