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Selected Quarterly Financial Data (Unaudited) - Schedule of Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	May 29, 2021	Feb. 27, 2021	Nov. 28, 2020	Aug. 29, 2020	May 30, 2020	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 29, 2021	May 30, 2020	Jun. 01, 2019
Net sales	$ 50,472	$ 45,235	$ 42,418	$ 38,812	$ 37,362	$ 38,249	$ 39,634	$ 40,653	$ 176,937	$ 155,898	$ 166,652
Gross profit	16,357	15,766	14,343	12,359	11,372	12,670	12,680	12,951	58,825	49,673	51,735
Net (loss) income	$ 1,885	$ 228	$ 689	$ (1,147)	$ (1,280)	$ (93)	$ (622)	$ 157	$ 1,655	$ (1,838)	$ (7,328)
Common Stock
Net (loss) income per share:
Earnings Per Share, Basic	$ 0.14	$ 0.02	$ 0.05	$ (0.09)	$ (0.10)	$ (0.01)	$ (0.05)	$ 0.01	$ 0.13	$ (0.14)	$ (0.57)
Earnings Per Share, Diluted	0.14	0.02	0.05	(0.09)	(0.10)	(0.01)	(0.05)	0.01	0.13	(0.14)	(0.57)
Common Class B
Net (loss) income per share:
Earnings Per Share, Basic	0.13	0.02	0.05	(0.08)	(0.09)	(0.01)	(0.04)	0.01	0.11	(0.13)	(0.51)
Earnings Per Share, Diluted	$ 0.13	$ 0.02	$ 0.05	$ (0.08)	$ (0.09)	$ (0.01)	$ (0.04)	$ 0.01	$ 0.11	$ (0.13)	$ (0.51)

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