Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023
Income Statement [Abstract]
Net sales	$ 75,182	$ 80,712	$ 232,934	$ 247,678
Cost of sales (exclusive of intangible amortization)	39,321	40,208	116,751	119,791
Gross profit	35,861	40,504	116,183	127,887
Operating expenses:
Research and development	8,189	6,852	24,788	22,023
Sales and marketing	25,405	25,406	78,237	77,956
General and administrative	10,578	8,839	30,723	29,775
Amortization of intangibles	3,287	4,739	10,474	14,384
Goodwill impairment	159,476	0	159,476	0
Change in fair value of contingent consideration	112	227	203	2,084
Acquisition, restructuring and other items, net	35,367	3,369	44,767	12,009
Total operating expenses	242,414	49,432	348,668	158,231
Gain on sale of assets	6,657	0	54,499	0
Operating loss	(199,896)	(8,928)	(177,986)	(30,344)
Other expense:
Interest income (expense), net	394	(736)	1,047	(1,801)
Other expense, net	(238)	0	(558)	(427)
Total other income (expense), net	156	(736)	489	(2,228)
Loss before income tax benefit	(199,740)	(9,664)	(177,497)	(32,572)
Income tax benefit	(12,004)	(179)	(6,597)	(1,597)
Net loss	$ (187,736)	$ (9,485)	$ (170,900)	$ (30,975)
Loss per share
Loss per share, basic (USD per share)	$ (4.67)	$ (0.24)	$ (4.26)	$ (0.79)
Loss per share, diluted (USD per share)	$ (4.67)	$ (0.24)	$ (4.26)	$ (0.79)
Weighted average shares outstanding
Basic weighted average shares outstanding (in shares)	40,234	39,509	40,098	39,436
Diluted weighted average shares outstanding (in shares)	40,234	39,509	40,098	39,436