Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025
Income Statement [Abstract]
Net sales	$ 78,423	$ 72,004	$ 233,567	$ 212,340
Cost of sales (exclusive of intangible amortization)	36,944	33,147	105,448	96,853
Gross margin	41,479	38,857	128,119	115,487
Operating expenses:
Research and development	7,084	6,913	21,269	19,632
Sales and marketing	27,437	25,504	82,278	76,698
General and administrative	10,719	10,490	33,425	31,856
Amortization of intangibles	2,668	2,598	7,964	7,730
Change in fair value of contingent consideration	0	40	0	272
Acquisition, restructuring and other items, net	6,522	3,286	12,915	13,465
Total operating expenses	54,430	48,831	157,851	149,653
Operating loss	(12,951)	(9,974)	(29,732)	(34,166)
Other expense:
Interest income (expense), net	(88)	135	(194)	975
Other income, net	4,967	5,430	4,661	5,269
Total other income, net	4,879	5,565	4,467	6,244
Loss before income tax benefit	(8,072)	(4,409)	(25,265)	(27,922)
Income tax (benefit) expense	12	(2)	72	21
Net loss	$ (8,084)	$ (4,407)	$ (25,337)	$ (27,943)
Loss per share
Loss per share, basic (USD per share)	$ (0.19)	$ (0.11)	$ (0.61)	$ (0.68)
Loss per share, diluted (USD per share)	$ (0.19)	$ (0.11)	$ (0.61)	$ (0.68)
Weighted average shares outstanding
Basic weighted average shares outstanding (in shares)	41,596,000	40,853,000	41,467,000	40,809,000
Diluted weighted average shares outstanding (in shares)	41,596,000	40,853,000	41,467,000	40,809,000