SIGNIFICANT ACCOUNTING POLICIES AND DISCLOSURES (Details 6) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 02, 2018	May 27, 2017	May 28, 2016	May 30, 2015
Stock Options [Member]
Options, Outstanding, Number	1,195	1,073	1,019	1,137
Options, Outstanding, Weighted Average Exercise Price	$ 8.89	$ 9.38	$ 9.93	$ 10.35
Options, Outstanding, Weighted Average Remaining Contractual Term	5 years 9 months 18 days
Options, Outstanding, Intrinsic Value	$ 2,033
Options, Vested, Number of Shares	746	0	0
Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 9.87
Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years 6 months
Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 876
$5.03 to $6.47 [Member]
Options, Outstanding, Number	383
Options, Outstanding, Weighted Average Exercise Price	$ 5.76
Options, Outstanding, Weighted Average Remaining Contractual Term	6 years 4 months 24 days
Options, Outstanding, Intrinsic Value	$ 1,508
Options, Vested, Number of Shares	190
Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 5.63
Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years
Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 772
$6.90 to $10.85 [Member]
Options, Outstanding, Number	385
Options, Outstanding, Weighted Average Exercise Price	$ 8.48
Options, Outstanding, Weighted Average Remaining Contractual Term	7 years 3 months 18 days
Options, Outstanding, Intrinsic Value	$ 525
Options, Vested, Number of Shares	159
Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 9.31
Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	6 years 4 months 24 days
Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 104
$11.14 to $13.76 [Member]
Options, Outstanding, Number	427
Options, Outstanding, Weighted Average Exercise Price	$ 12.05
Options, Outstanding, Weighted Average Remaining Contractual Term	4 years 1 month 6 days
Options, Vested, Number of Shares	397
Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 12.12
Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years