SIGNIFICANT ACCOUNTING POLICIES AND DISCLOSURES (Details 7) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	May 27, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May 27, 2017	May 28, 2016	May 30, 2015
Numerator for Basic and Diluted Earnings Per Share:
Loss from Continuing Operations	$ (125)	$ (1,431)	$ (2,522)	$ (2,850)	$ (155)	$ (2,926)	$ (2,286)	$ (1,399)	$ (6,928)	$ (6,766)	$ (5,528)
Loss from discontinued operations, net of tax											(31)
Undistributed losses, Basic									(9,959)	(9,845)	(8,819)
Undistributed losses, Diluted									(9,959)	(9,845)	(8,819)
Net loss	$ (125)	$ (1,431)	$ (2,522)	$ (2,850)	$ (155)	$ (2,926)	$ (2,286)	$ (1,399)	$ (6,928)	$ (6,766)	$ (5,559)
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Diluted									12,845	13,049	13,833
Earnings Per Share, Basic and Diluted [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									848	890	881
Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									$ (1,519)	$ (1,478)	$ (1,254)
Undistributed losses, Diluted									$ (1,519)	$ (1,478)	$ (1,254)
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic									2,140	2,141	2,151
Weighted Average Number of Shares Outstanding, Diluted									2,140	2,141	2,151
Earnings Per Share, Basic and Diluted [Abstract]
Earnings Per Share, Basic	$ (0.01)	$ (0.10)	$ (0.18)	$ (0.20)	$ (0.01)	$ (0.21)	$ (0.16)	$ (0.10)	$ (0.49)	$ (0.47)	$ (0.36)
Earnings Per Share, Diluted	(0.01)	(0.10)	(0.18)	(0.20)	(0.01)	(0.21)	(0.16)	(0.10)	$ (0.49)	$ (0.47)	$ (0.36)
Continuing Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									$ (9,959)	$ (9,845)	$ (8,788)
Undistributed losses, Diluted									(9,959)	(9,845)	(8,788)
Continuing Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									(1,519)	(1,478)	(1,249)
Undistributed losses, Diluted									$ (1,519)	$ (1,478)	$ (1,249)
Earnings Per Share, Basic and Diluted [Abstract]
Earnings Per Share, Basic									$ (0.49)	$ (0.47)	$ (0.36)
Earnings Per Share, Diluted									$ (0.49)	$ (0.47)	$ (0.36)
Discontinued Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									$ (3,031)	$ (3,079)	$ (3,291)
Undistributed losses, Diluted									(3,031)	(3,079)	(3,291)
Discontinued Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									(464)	(464)	(468)
Undistributed losses, Diluted									(464)	(464)	(468)
Common Stock [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									(8,440)	(8,367)	(7,565)
Undistributed losses, Diluted									$ (8,440)	$ (8,367)	$ (7,565)
Denominator for Basic and Diluted Earnings Per Share:
Weighted Average Number of Shares Outstanding, Basic									10,705	10,908	11,682
Weighted Average Number of Shares Outstanding, Diluted									10,705	10,908	11,682
Earnings Per Share, Basic and Diluted [Abstract]
Earnings Per Share, Basic	(0.01)	(0.11)	(0.20)	(0.23)	(0.01)	(0.23)	(0.18)	(0.10)	$ (0.55)	$ (0.53)	$ (0.41)
Earnings Per Share, Diluted	$ (0.01)	$ (0.11)	$ (0.20)	$ (0.23)	$ (0.01)	$ (0.23)	$ (0.18)	$ (0.10)	$ (0.55)	$ (0.53)	$ (0.41)
Common Stock [Member] | Continuing Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									$ (8,440)	$ (8,367)	$ (7,539)
Undistributed losses, Diluted									$ (8,440)	$ (8,367)	$ (7,539)
Earnings Per Share, Basic and Diluted [Abstract]
Earnings Per Share, Basic									$ (0.55)	$ (0.53)	$ (0.41)
Earnings Per Share, Diluted									$ (0.55)	$ (0.53)	$ (0.41)
Common Stock [Member] | Discontinued Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Undistributed losses, Basic									$ (2,567)	$ (2,615)	$ (2,823)
Undistributed losses, Diluted									(2,567)	(2,615)	(2,823)
Basic [Member]
Numerator for Basic and Diluted Earnings Per Share:
Loss from Continuing Operations									(6,928)	(6,766)	(5,528)
Loss from discontinued operations, net of tax											(31)
Net loss									(6,928)	(6,766)	(5,559)
Basic [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Basic [Member] | Continuing Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Basic [Member] | Discontinued Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Basic [Member] | Common Stock [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									2,567	2,615
Basic [Member] | Common Stock [Member] | Continuing Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									2,567	2,615	2,794
Basic [Member] | Common Stock [Member] | Discontinued Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									2,567	2,615	2,794
Diluted [Member]
Numerator for Basic and Diluted Earnings Per Share:
Loss from Continuing Operations									(6,928)	(6,766)	(5,528)
Loss from discontinued operations, net of tax											(31)
Net loss									(6,928)	(6,766)	(5,559)
Diluted [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Diluted [Member] | Continuing Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Diluted [Member] | Discontinued Operations [Member] | Common Class B [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									464	464	466
Diluted [Member] | Common Stock [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									2,567	2,615	2,794
Diluted [Member] | Common Stock [Member] | Continuing Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									2,567	2,615	2,794
Diluted [Member] | Common Stock [Member] | Discontinued Operations [Member]
Numerator for Basic and Diluted Earnings Per Share:
Less dividends									$ 2,567	$ 2,615	$ 2,794