Note 10. Long-term Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	May 25, 2013
Note 10. Long-term Debt (Details) [Line Items]
Debt Instrument Maturity Period	2 years
Line of Credit [Member]
Note 10. Long-term Debt (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$ 250.0
Debt Instrument, Maturity Date	May 04, 2016
Debt Instrument, Interest Rate Terms	LIBOR plus 100 basis points at the time of the respective borrowing
Line of Credit Facility, Amount Outstanding (in Dollars)	47.3
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)	202.7
Floating Rate Note [Member]
Note 10. Long-term Debt (Details) [Line Items]
Debt Instrument, Maturity Date	Sep. 14, 2013
Debt Instrument, Interest Rate Terms	LIBOR plus 50 basis points
Proceeds from Issuance of Debt (in Dollars)	$ 100.0