CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Income Statement [Abstract]
Net sales	$ 43,676,000	$ 60,768,000
Cost of sales	24,637,000	31,785,000
Gross profit	19,039,000	28,983,000
Operating expenses:
Research and development	1,756,000	1,521,000
Selling, marketing, and distribution	11,780,000	13,200,000
General and administrative	11,064,000	10,039,000
Total operating expenses	24,600,000	24,760,000
Operating (loss)/income	(5,561,000)	4,223,000
Other income, net:
Other income, net	241,000	129,000
Interest expense, net	(186,000)	(46,000)
Total other income, net	55,000	83,000
(Loss)/income from operations before income taxes	(5,506,000)	4,306,000
Income tax expense	189,000	849,000
Net (loss)/income	$ (5,695,000)	$ 3,457,000
Net (loss)/income per share:
Basic	$ (0.42)	$ 0.25
Diluted	$ (0.42)	$ 0.24
Weighted average number of common shares outstanding:
Basic	13,443	14,083
Diluted	13,443	14,301