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Note 6. Derivative Instruments (Detail) - Fair Value Amounts of Derivative Instruments and Gains (USD $) In Thousands, unless otherwise specified	Nov. 30, 2012	Aug. 31, 2012
Accounts payable and accrued expenses	$ 343	$ 2,374

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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