CALCULATION OF EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 02, 2017	Nov. 26, 2016	Dec. 02, 2017	Nov. 26, 2016
Numerator for Basic and Diluted Earnings Per Share:
Income (loss) from continuing operations	$ 172	$ (2,522)	$ 60	$ (5,372)
Undistributed earnings (losses) - continuing operations	(591)	(3,279)	(1,461)	(3,607)
Undistributed earnings (losses) - continuing operations, Diluted	(591)	(3,279)	(1,461)	(3,607)
Income from discontinued operations	1,496		1,496
Undistributed earnings (losses) - discontinued operations	733		(25)
Undistributed earnings (losses) - discontinued operations, Diluted	733		(25)
Net income (loss)	1,668	(2,522)	1,556	$ (5,372)
Undistributed earnings (losses)	905	(3,279)	35
Undistributed earnings (losses), Diluted	$ 905	$ (3,279)	$ 35
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares	12,926	12,844	12,901	12,844
Common Stock [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	$ 647	$ 641	$ 1,290	$ 641
Undistributed earnings (losses) - continuing operations	(501)	(2,779)	(1,239)	(3,057)
Undistributed earnings (losses) - continuing operations, Diluted	(501)	(2,779)	(1,239)	$ (3,057)
Undistributed earnings (losses) - discontinued operations	622		(21)
Undistributed earnings (losses) - discontinued operations, Diluted	622		(21)
Undistributed earnings (losses)	768	(2,779)	30
Undistributed earnings (losses), Diluted	$ 768	$ (2,779)	$ 30
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic	10,755	10,703	10,734	10,703
Weighted Average Number of Shares Outstanding, Diluted	10,789	10,703	10,764	10,703
Dilutive stock options	34		30
Earnings Per Share, Basic and Diluted [Abstract]
Income (loss) from continuing operations - basic	$ 0.01	$ (0.20)		$ (0.43)
Income (loss) from continuing operations - diluted	0.01	(0.20)		(0.43)
Income from discontinued operations - basic	0.12		0.12
Income from discontinued operations - diluted	0.12		0.12
Earnings Per Share, Basic	0.13	(0.20)	0.12	(0.43)
Earnings Per Share, Diluted	$ 0.13	$ (0.20)	$ 0.12	$ (0.43)
Class B Common [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends	$ 116	$ 116	$ 231	$ 116
Undistributed earnings (losses) - continuing operations	(90)	(500)	(222)	(550)
Undistributed earnings (losses) - continuing operations, Diluted	(90)	(500)	(222)	$ (550)
Undistributed earnings (losses) - discontinued operations	111		(4)
Undistributed earnings (losses) - discontinued operations, Diluted	111		(4)
Undistributed earnings (losses)	137	(500)	5
Undistributed earnings (losses), Diluted	$ 137	$ (500)	$ 5
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic	2,137	2,141	2,137	2,141
Weighted Average Number of Shares Outstanding, Diluted	2,137	2,141	2,137	2,141
Earnings Per Share, Basic and Diluted [Abstract]
Income (loss) from continuing operations - basic	$ 0.01	$ (0.18)		$ (0.38)
Income (loss) from continuing operations - diluted	0.01	(0.18)		(0.38)
Income from discontinued operations - basic	0.11		0.11
Income from discontinued operations - diluted	0.11		0.11
Earnings Per Share, Basic	0.12	(0.18)	0.11	(0.38)
Earnings Per Share, Diluted	$ 0.12	$ (0.18)	$ 0.11	$ (0.38)