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Updates to Critical Accounting Policies and Estimates - Additional Information (Detail) (USD $)	Dec. 01, 2012	Jun. 02, 2012
Update Of Summary Of Significant Accounting Policies [Line Items]
Finished Goods Included in inventories	$ 32,700,000	$ 31,800,000
Raw material and Work in progress included in inventories	2,600,000	2,900,000
Goodwill	2,269,000	1,261,000
Powerlink Specialist Electronics Support Limited
Update Of Summary Of Significant Accounting Policies [Line Items]
Goodwill	1,358,000	1,261,000
D and C Import-Export Inc.
Update Of Summary Of Significant Accounting Policies [Line Items]
Goodwill	$ 911,000

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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