CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 28, 2023	May 29, 2022	May 30, 2021
Product sales	$ 103,269	$ 111,270	$ 100,874
Cost of product sales	75,284	72,204	61,937
Gross profit	27,985	39,066	38,937
Operating costs and expenses:
Research and development	8,736	7,839	6,684
Selling, general and administrative	38,969	34,659	27,721
Restructuring costs	4,184	8,359	13,355
Total operating costs and expenses	49,781	50,857	47,760
Operating (loss) income	(21,796)	(11,791)	(8,823)
Interest income	68	81	48
Interest expense	(17,649)	(15,551)	(8,933)
Transition services income	349	5,814	0
Loss on debt extinguishment	(23,741)	0	(1,110)
Other income (expense), net	(1,159)	760	(10,969)
Net loss from continuing operations before taxes	(63,928)	(20,687)	(29,787)
Income tax (provision) benefit	(308)	5,211	6,350
Net loss from continuing operations	(64,236)	(15,476)	(23,437)
Discontinued operations:
Loss from discontinued operations	(35,327)	(101,929)	(10,289)
Income tax benefit	0	690	1,432
Loss from discontinued operations	(35,327)	(101,239)	(8,857)
Net loss	$ (99,563)	$ (116,715)	$ (32,294)
Basic net loss per share:
Loss from continuing operations (in dollars per share)	$ (2.14)	$ (0.53)	$ (0.80)
Loss from discontinued operations (in dollars per share)	(1.18)	(3.44)	(0.30)
Total basic net loss per share (in dollars per share)	(3.32)	(3.97)	(1.10)
Diluted net loss per share:
Loss from continuing operations (in dollars per share)	(2.14)	(0.53)	(0.80)
Loss from discontinued operations (in dollars per share)	(1.18)	(3.44)	(0.30)
Total diluted net loss per share (in dollars per share)	$ (3.32)	$ (3.97)	$ (1.10)
Shares used in per share computation:
Basic (in shares)	29,958	29,466	29,294
Diluted (in shares)	29,958	29,466	29,294
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	Product [Member]	Product [Member]	Product [Member]
Cost, Product and Service [Extensible Enumeration]	Product [Member]	Product [Member]	Product [Member]
BreatheWay
Operating costs and expenses:
Gain (loss) on disposition of business	$ (2,108)	$ 0	$ 0