SEGMENT REPORTING (Details 1) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Feb. 27, 2016	Feb. 28, 2015	Feb. 27, 2016	Feb. 28, 2015
Segment Reporting Information [Line Items]
Net sales		$ 31,291	$ 33,471	$ 102,448	$ 102,011
Total, Gross Profit		9,750	9,800	31,447	30,920
North America [Member]
Segment Reporting Information [Line Items]
Net sales		14,215	15,905	47,039	44,373
Total, Gross Profit		5,163	5,406	16,500	15,436
Asia/Pacific [Member]
Segment Reporting Information [Line Items]
Net sales		6,081	5,577	18,045	18,001
Total, Gross Profit		2,094	1,818	5,909	5,931
Europe [Member]
Segment Reporting Information [Line Items]
Net sales		9,659	10,006	32,782	33,137
Total, Gross Profit		2,908	3,086	9,763	10,833
Latin America [Member]
Segment Reporting Information [Line Items]
Net sales		1,402	1,905	4,464	6,433
Total, Gross Profit		555	635	1,729	2,324
Other [Member]
Segment Reporting Information [Line Items]
Net sales	[1]	(66)	78	118	67
Total, Gross Profit	[1]	$ (970)	$ (1,145)	$ (2,454)	$ (3,604)

[1] Other includes primarily net sales not allocated to a specific geographical region, unabsorbed value-add costs, and other unallocated expenses.