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Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) (USD $) In Thousands	9 Months Ended
	May 31, 2011	May 31, 2010
Other comprehensive income (loss):
Taxes on unrealized gain (loss) on derivatives	$ (57)	$ 97
Accumulated Other Comprehensive Income (Loss) [Member]
Other comprehensive income (loss):
Taxes on defined benefit obligation		$ 267

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

Tax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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