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VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
$ in Thousands
 12 Months Ended
May 28, 2016
May 30, 2015
May 31, 2014
Allowance For Doubtful Accounts [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period $ 283 $ 581 $ 1,092
Charged to expense [1] 228 (221) 114
Deductions [2] (147) 77 625
Balance at end of period 364 283 581
Inventory Provisions [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 2,991 3,141 2,715
Charged to expense [3] 690 228 751
Deductions [4] 301 378 325
Balance at end of period $ 3,380 $ 2,991 $ 3,141
[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 2016 are inventory write-downs of $0.3 million for PMT and $0.3 million for Canvys, and less than $0.1 million for Healthcare.
[4] Inventory disposed of or sold, net of foreign currency translation.