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Long-term Debt (Details) (USD $) |  |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 27, 2011 | Aug. 28, 2010 | Aug. 28, 2010 Series A, Fixed Rate Notes [Member] | Aug. 27, 2011 Series D, Floating Rate Note [Member] | Aug. 28, 2010 Series D, Floating Rate Note [Member] | Aug. 27, 2011 Notes Payable Other [Member] | Aug. 28, 2010 Notes Payable Other [Member] | Aug. 27, 2011 Line of Credit [Member] | Aug. 28, 2004 Fixed Rate Note [Member] | Jun. 14, 2004 Fixed Rate Note [Member] | Aug. 27, 2011 Prior Credit Agreement [Member] | Aug. 25, 2007 Floating Rate Note [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 120,296,000 | $ 181,464,000 | $ 75,000,000 | $ 100,000,000 | $ 100,000,000 | $ 5,296,000 | $ 6,464,000 | $ 15,000,000 |  | $ 75,000,000 |  |
Less - current maturities | 20,133,000 | 81,160,000 |  |  |  |  |  |  |  |  |  |
Long term debt, net of current maturities | 100,163,000 | 100,304,000 |  |  |  |  |  |  |  |  |  |
Line of Credit |  |  |  |  |  |  |  | 250,000,000 |  |  | 225,000,000 |
Line of credit facility, amount outstanding |  |  |  |  |  |  |  | 15,000,000 |  |  |  |
Outstanding letters of credit | 39,200,000 | 35,900,000 |  |  |  |  |  | 39,200,000 |  |  |  |
Amount available for borrowing |  |  |  |  |  |  |  | 195,800,000 |  |  |  |
Issuance of floating rate notes |  |  |  |  |  |  |  |  |  |  |  | 100,000,000
Maturity date |  |  | Jun. 14, 2011 | Sep. 14, 2013 | Sep. 14, 2013 |  |  | May 04, 2016 |  |  | Sep. 13, 2011 | Sep. 14, 2013
Interest rate |  |  | 5.27% |  |  |  |  | 1.40% |  | 5.27% |  |
Terms |  |  |  |  |  |  |  | LIBOR plus 125 basis points at the time of the respective borrowing. |  |  |  | LIBOR plus 50 basis points
Basis spread on variable rate |  |  |  | 0.75% | 1.40% |  |  |  |  |  |  |
Repayment of fixed rate note cash reserves |  |  |  |  |  |  |  |  | 45,000,000 |  |  |
Repayment of fixed rate note credit line borrowing |  |  |  |  |  |  |  |  | 30,000,000 |  |  |
Debt instrument, maturity date range end |  |  |  |  |  |  |  |  | seven years |  |  | two years
Current maturities of long-term debt for the next five fiscal years [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
2012 | 20,133,000 |  |  |  |  |  |  |  |  |  |  |
2013 | 0 |  |  |  |  |  |  |  |  |  |  |
2014 | 100,000,000 |  |  |  |  |  |  |  |  |  |  |
2015 | 0 |  |  |  |  |  |  |  |  |  |  |
2016 | 0 |  |  |  |  |  |  |  |  |  |  |
Thereafter | 163,000 |  |  |  |  |  |  |  |  |  |  |
Total | $ 120,296,000 | $ 181,464,000 | $ 75,000,000 | $ 100,000,000 | $ 100,000,000 | $ 5,296,000 | $ 6,464,000 | $ 15,000,000 |  | $ 75,000,000 |  |

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- Definition Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. + 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 16 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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- Definition Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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