Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Income Statement [Abstract]
Net sales	$ 67,491	$ 78,679
Cost of sales (exclusive of intangible amortization)	30,767	38,619
Gross profit	36,724	40,060
Operating expenses:
Research and development	6,285	7,941
Sales and marketing	25,605	27,368
General and administrative	10,975	10,856
Amortization of intangibles	2,570	3,625
Change in fair value of contingent consideration	76	(130)
Acquisition, restructuring and other items, net	4,311	3,212
Total operating expenses	49,822	52,872
Gain on sale of assets	0	47,842
Operating income (loss)	(13,098)	35,030
Other expense:
Interest income, net	606	119
Other expense, net	(173)	(288)
Total other income (expense), net	433	(169)
Income (loss) before income tax benefit	(12,665)	34,861
Income tax expense (benefit)	133	(11,023)
Net income (loss)	$ (12,798)	$ 45,884
Earnings (loss) per share
Loss per share, basic (USD per share)	$ (0.31)	$ 1.15
Loss per share, diluted (USD per share)	$ (0.31)	$ 1.15
Weighted average shares outstanding
Basic weighted average shares outstanding (in shares)	40,653	39,842
Diluted weighted average shares outstanding (in shares)	40,653	39,968