Diluted Earnings Per Share - Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Feb. 27, 2022	Nov. 28, 2021	Aug. 29, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	Feb. 27, 2022	Feb. 28, 2021
Numerator:
Net loss applicable to common stockholders	$ (12,850)	$ (38,441)	$ (9,477)	$ (5,498)	$ (13,301)	$ (11,000)	$ (60,768)	$ (29,799)
Denominator:
Weighted average shares for basic net loss per share (in shares)	29,482			29,323			29,459	29,282
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	0			0			0	0
Weighted average shares for diluted net loss per share (in shares)	29,482			29,323			29,459	29,282
Diluted net loss per share (in dollars per share)	$ (0.43)			$ (0.19)			$ (2.07)	$ (1.02)