Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 6,716,000	$ 8,964,000
Cost of sales	4,398,000	5,292,000
Gross profit	2,318,000	3,672,000
Operating expenses:
General and administrative	1,329,000	1,347,000
Sales and marketing	1,168,000	1,550,000
Research and development	246,000	156,000
Total operating expenses	2,743,000	3,053,000
(Loss) income from operations	(425,000)	619,000
Interest expense, net	(44,000)	(95,000)
(Loss) income before income taxes	(469,000)	524,000
Income tax expense	(3,000)	(4,000)
Net (loss) income	$ (472,000)	$ 520,000
Net (loss) income per share:
Basic (in dollars per share)	$ (0.08)	$ 0.09
Diluted (in dollars per share)	$ (0.08)	$ 0.08
Shares used in calculation of net (loss) income per share:
Basic (in shares)	6,204	6,117
Diluted (in shares)	6,204	6,293