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Commitments and Contingencies - Product Warranty Accrual (Details) (USD $)	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011	Feb. 28, 2010
Loss Contingencies [Line Items]
Reserve for warranty	$ 2,073,000	$ 1,670,000	$ 2,486,000	$ 2,797,000
Electrical and Industrial Products [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding	13,900,000
Reserve for warranty	$ 2,100,000

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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