Valuation and Qualifying Account (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 01, 2013		Jun. 02, 2012		May 28, 2011
Allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 1,058		$ 438		$ 369
Charged to expense	135	[1]	638	[1]	318	[1]
Deductions	101	[2]	18	[2]	249	[2]
Balance at end of period	1,092		1,058		438
Inventory provisions
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	2,976		4,519		11,050
Charged to expense	412	[3]	445	[3]	1,055	[3]
Deductions	673	[4]	1,988	[4]	7,586	[4]
Balance at end of period	2,715		2,976		4,519
Warranty reserves
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	148		138		138
Charged to expense	259		328		341
Deductions	219		318		341
Balance at end of period	$ 188		$ 148		$ 138

[1] Charges to bad debt expense

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

[3] Charges to cost of sales. Included in fiscal 2013 are inventory write-downs of $0.2 million for EDG and $0.2 million for Canvys. Included in fiscal 2012 are inventory write-downs of $0.2 million for EDG and $0.2 million for Canvys. Included in fiscal 2011 are inventory write-downs of $0.7 million for EDG and $0.4 million for Canvys.

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