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Note 9 - Fair Value (Detail) - Fair Value of Derivatives (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012
Estimate of Fair Value, Fair Value Disclosure [Member]
Derivatives
Interest rate swaps (included in other liabilities)	$ (1,906)
Total derivatives	(1,906)
Fair Value, Inputs, Level 2 [Member]
Derivatives
Interest rate swaps (included in other liabilities)	(1,906)
Total derivatives	$ (1,906)

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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