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Calculation of Earnings Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 26, 2022	Nov. 27, 2021	Nov. 26, 2022	Nov. 27, 2021
Numerator for Basic and Diluted Earnings Per Share:
Net income (loss)	$ 5,549	$ 4,122	$ 11,873	$ 6,757
Undistributed earnings, Basic	4,718	3,330	10,223	5,179
Undistributed earnings, Diluted	$ 4,718	$ 3,330	$ 10,223	$ 5,179
Denominator for Basic and Diluted Earnings Per Share:
Effect of dilutive securities dilutive stock options	617	427	626	336
Weighted Average Number of Shares Outstanding, Diluted	12,535	11,697	12,442	11,568
Basic
Numerator for Basic and Diluted Earnings Per Share:
Net income (loss)	$ 5,549	$ 4,122	$ 11,873	$ 6,757
Diluted
Numerator for Basic and Diluted Earnings Per Share:
Net income (loss)	5,549	4,122	11,873	6,757
Common Stock
Numerator for Basic and Diluted Earnings Per Share:
Undistributed earnings, Basic	4,085	2,852	8,841	4,434
Undistributed earnings, Diluted	$ 4,112	$ 2,867	$ 8,901	$ 4,453
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic	11,918	11,270	11,816	11,232
Weighted Average Number of Shares Outstanding, Diluted	12,535	11,697	12,442	11,568
Net income per share:
Earnings Per Share, Basic	$ 0.40	$ 0.31	$ 0.87	$ 0.52
Earnings Per Share, Diluted	$ 0.39	$ 0.30	$ 0.83	$ 0.50
Common Stock | Basic
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	$ 719	$ 679	$ 1,428	$ 1,352
Common Stock | Diluted
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	719	679	1,428	1,352
Common Class B
Numerator for Basic and Diluted Earnings Per Share:
Undistributed earnings, Basic	633	478	1,382	745
Undistributed earnings, Diluted	$ 606	$ 463	$ 1,322	$ 726
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic	2,053	2,097	2,053	2,097
Weighted Average Number of Shares Outstanding, Diluted	2,053	2,097	2,053	2,097
Net income per share:
Earnings Per Share, Basic	$ 0.36	$ 0.28	$ 0.78	$ 0.46
Earnings Per Share, Diluted	$ 0.35	$ 0.27	$ 0.75	$ 0.45
Common Class B | Basic
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	$ 112	$ 113	$ 222	$ 226
Common Class B | Diluted
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	$ 112	$ 113	$ 222	$ 226

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Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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