Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Net sales	$ 35,968	$ 32,345	$ 31,899
Cost of sales	22,402	21,228	19,199
Gross profit	13,566	11,117	12,700
Operating expenses:
General and administrative	5,367	4,876	5,281
Sales and marketing	4,913	5,518	5,758
Research and development	712	639	608
Total operating expense	10,992	11,033	11,647
Income from operations	2,574	84	1,053
Other income (expense):
Interest expense, net	(392)	(550)	(657)
Gain on extinguishment of debt	0	1,389	0
Total other income (expense), net	(392)	839	(657)
Income before income taxes	2,182	923	396
Income tax expense	(28)	(3)	(9)
Net income	$ 2,154	$ 920	$ 387
Net income per share:
Basic (in dollars per share)	$ 0.35	$ 0.15	$ 0.06
Diluted (in dollars per share)	$ 0.35	$ 0.15	$ 0.06
Shares used in calculation of net income per share:
Basic (in shares)	6,157	6,070	5,956
Diluted (in shares)	6,168	6,079	5,959