Updates to Critical Accounting Policies and Estimates - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Mar. 01, 2011	Aug. 31, 2013	Jun. 01, 2013
Update Of Summary Of Significant Accounting Policies [Line Items]
Proceeds from Divestiture of Businesses	$ 238,800,000
Finished Goods Included in inventories		32,700,000	31,600,000
Raw material and Work in progress included in inventories		2,600,000	2,400,000
Document Period End Date		Aug. 31, 2013
Goodwill		1,567,000	1,519,000
Powerlink Specialist Electronics Support Limited
Update Of Summary Of Significant Accounting Policies [Line Items]
Goodwill		1,300,000
D and C Import-Export Inc.
Update Of Summary Of Significant Accounting Policies [Line Items]
Goodwill		200,000
Maximum [Member] | WVS-Technology
Update Of Summary Of Significant Accounting Policies [Line Items]
Goodwill		$ 100,000