VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 02, 2018	May 27, 2017	May 28, 2016
Allowance For Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		$ 398	$ 364	$ 283
Charged to expense	[1]	223	226	228
Deductions	[2]	(312)	(192)	(147)
Balance at end of period		309	398	364
Inventory Provisions [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		3,456	3,380	2,991
Charged to expense	[3]	773	456	690
Deductions	[4]	(202)	(380)	(301)
Balance at end of period		$ 4,027	$ 3,456	$ 3,380

[1] Charges to bad debt expense, net of bad debt recoveries.

[2] Uncollectible amounts written off, net of recoveries and foreign currency translation.

[3] Charges to cost of sales. Included in fiscal 2017 are inventory write-downs of $0.4 million for PMT and $0.1 million for Canvys, and less than $0.1 million for Healthcare.

[4] Inventory disposed of or sold, net of foreign currency translation.