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Note 13 - Commitments and Contingencies (Detail) (USD $)				6 Months Ended
	Feb. 28, 2013	Aug. 31, 2012	Feb. 29, 2012	Feb. 28, 2013 Executive Officer [Member] Fiscal 2012 Bonus Plan [Member]	Feb. 28, 2013 Fiscal 2012 Bonus Plan [Member]
Percentage of Company's Earnings Before Interest, Taxes, and Other Income Available Under the Bonus Plan, Maximum					25.00%
Adjusted EBITOI As Percentage of Target EBITOI, Threshold To Pay Bonus					70.00%
Percentage of Individual Bonus Payout Determined By Actual Versus Targeted EBITOI Results				50.00%
Percentage of Individual's Payout Determined Upon Achievement of Certain Pre-Established Individual Performance Objectives				50.00%
Accrued Bonuses (in Dollars)	$ 275,000		$ 542,720
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year (in Dollars)	119,250
Operating Leases, Future Minimum Payments, Due in Two Years (in Dollars)	59,500
Operating Leases, Future Minimum Payments, Due Thereafter (in Dollars)	$ 0
Entity-Wide Trade Joint Venture Receivables, Three Joint Ventures, Percentage	54.20%	55.30%

X

- Definition

If the adjusted EBITOI (EBITO adjusted for amounts to be paid under the bonus plan) falls below this threshold then no cash bonuses will be paid.

+ References

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Percentage of total trade joint venture receivables accounted for by three joint ventures.

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- Definition

Maximum percentage of EBITOI available as bonus amounts under the bonus plan.

+ References

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Percentage of individual's bonus payout determined based upon the Company's actual EBITOI for the fiscal year compared to pre-established target EBITOI for the fiscal year.

+ References

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Percentage of individual's payout determined based upon achievement of certain pre-established individual performance objectives.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements.

+ References

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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