Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Fair Value Measurements (Detail) - Changes in the Tap Participation Fee

v2.4.0.6
Note 2 - Fair Value Measurements (Detail) - Changes in the Tap Participation Fee (USD $)
6 Months Ended
Feb. 28, 2013
Gross Estimated Tap Participation Fee Liability [Member]
Aug. 31, 2012
Gross Estimated Tap Participation Fee Liability [Member]
Feb. 28, 2013
Tap Participation Fee Report Liability [Member]
Feb. 28, 2013
Discount To Be Imputed As Interest Expense In Future Periods [Member]
Balance at August 31, 2012 $ 112,958,000 $ 112,958,000 $ 68,269,200 $ 44,688,800
Imputed interest recorded as "Other Expense"     1,544,800 (1,544,800)
Balance at February 28, 2013 $ 112,958,000 $ 112,958,000 $ 69,814,000 $ 43,144,000