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Note 5 - Loans Payable and Long-term Debt (Details) (USD $) In Millions, unless otherwise specified |  |  | 0 Months Ended | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2013 | Aug. 25, 2012 | Sep. 14, 2013 Subsequent Event [Member] Floating Rate Note [Member] | Aug. 31, 2013 Line of Credit [Member] | Aug. 31, 2013 Floating Rate Note [Member] | Aug. 27, 2011 Prior Credit Agreement [Member] | Aug. 27, 2011 Fixed Rate Note [Member]
Note 5 - Loans Payable and Long-term Debt (Details) [Line Items] |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 250.0 |  | $ 225.0 |
Debt Instrument, Maturity Date |  |  |  | May 04, 2016 | Sep. 14, 2013 |  |
Debt Instrument, Basis Spread on Variable Rate (in Basis Points) |  |  |  | 1.00% | 0.50% |  |
Line of Credit Facility, Amount Outstanding |  |  |  | 47.1 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | 202.9 |  |  |
Proceeds from Issuance of Debt |  |  |  |  | 100.0 |  | 75.0
Debt Instrument Maturity Period |  |  |  |  |  |  | 7 years
Debt Instrument, Interest Rate, Stated Percentage | 0.77% | 0.97% |  |  |  |  | 5.27%
RepaymentsOfFixedRateNoteThroughCashReserve |  |  |  |  |  |  | 45.0
Repayments Of Fixed Rate Note Through Credit Agreement |  |  |  |  |  |  | 30.0
Repayments of Debt (in Dollars) |  |  | $ 100.0 |  |  |  |

X
- Definition When presenting a range of maturity dates, the latest date when the outstanding debt instruments are required to be repaid. May be presented in a variety of ways (for example: year only, month and year, day, month and year, and number of years). + References No definition available. + Details
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- Definition Repayment of fixed rate note through cash reserve that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References No definition available. + Details
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- Definition Repayment of fixed rate note through line of credit that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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