Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net sales	$ 5,179,000	$ 9,419,000	$ 11,895,000	$ 18,383,000
Cost of sales	3,389,000	5,657,000	7,787,000	10,949,000
Gross profit	1,790,000	3,762,000	4,108,000	7,434,000
Operating expenses:
General and administrative	1,279,000	1,422,000	2,608,000	2,768,000
Sales and marketing	1,142,000	1,131,000	2,310,000	2,681,000
Research and development	206,000	127,000	452,000	284,000
Total operating expenses	2,627,000	2,680,000	5,370,000	5,733,000
(Loss) income from operations	(837,000)	1,082,000	(1,262,000)	1,701,000
Interest expense, net	(103,000)	(101,000)	(147,000)	(196,000)
(Loss) income before income taxes	(940,000)	981,000	(1,409,000)	1,505,000
Income tax expense	0	(11,000)	(3,000)	(14,000)
Net (loss) income	$ (940,000)	$ 970,000	$ (1,412,000)	$ 1,491,000
Net (loss) income per share:
Basic (in dollars per share)	$ (0.15)	$ 0.16	$ (0.23)	$ 0.24
Diluted (in dollars per share)	$ (0.15)	$ 0.16	$ (0.23)	$ 0.24
Shares used in calculation of net (loss) income per share:
Basic (in shares)	6,228	6,130	6,216	6,124
Diluted (in shares)	6,228	6,139	6,216	6,136