Diluted Earnings Per Share - Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 29, 2021	Aug. 30, 2020
Numerator:
Net loss applicable to common stockholders	$ (9,477)	$ (11,000)
Denominator:
Weighted average shares for basic net loss per share (in shares)	29,424	29,242
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	0	0
Weighted average shares for diluted net loss per share (in shares)	29,424	29,242
Diluted net loss per share (in dollars per share)	$ (0.32)	$ (0.38)