Note 8. Subordinated Debt (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended			12 Months Ended	3 Months Ended			12 Months Ended
	Dec. 30, 2011	Nov. 30, 2012	Aug. 31, 2011	Aug. 31, 2012 Maximum [Member]	May 31, 2012 Maximum [Member]	Feb. 28, 2012 Maximum [Member]	Aug. 31, 2012 Maximum [Member]	Aug. 31, 2012 Minimum [Member]	May 31, 2012 Minimum [Member]	Feb. 28, 2012 Minimum [Member]	Aug. 31, 2012 Minimum [Member]	Nov. 30, 2012 Subordinated Debt [Member]
Proceeds from Issuance of Subordinated Long-term Debt (in Dollars)	$ 3.0		$ 10.0
Adjusted EBITDA to Total Funded Senior Debt, Covenant Terms				4.5	3.75	4.0	3.75	1.0	1.0	1.0	1.0
Subordinated Borrowing, Interest Rate		12.00%
Debt Instrument, Basis Spread on Variable Rate												2.00%
Fixed Charge Ratio, Covenant Terms				1.25				1.0