Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Income Statement [Abstract]
Net sales	$ 75,711	$ 67,491
Cost of sales (exclusive of intangible amortization)	33,854	30,767
Gross margin	41,857	36,724
Operating expenses:
Research and development	6,417	6,285
Sales and marketing	28,130	25,605
General and administrative	12,555	10,975
Amortization of intangibles	2,653	2,570
Change in fair value of contingent consideration	0	76
Acquisition, restructuring and other items, net	2,758	4,311
Total operating expenses	52,513	49,822
Operating loss	(10,656)	(13,098)
Other expense:
Interest income (expense), net	(4)	606
Other expense, net	(178)	(173)
Total other income (expense), net	(182)	433
Loss before income tax benefit	(10,838)	(12,665)
Income tax expense	65	133
Net loss	$ (10,903)	$ (12,798)
Loss per share
Loss per share, basic (USD per share)	$ (0.26)	$ (0.31)
Loss per share, diluted (USD per share)	$ (0.26)	$ (0.31)
Weighted average shares outstanding
Basic weighted average shares outstanding (in shares)	41,174,000	40,653,000
Diluted weighted average shares outstanding (in shares)	41,174,000	40,653,000