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Note 9 - Commitments and Contingencies (Details) - Anticipated Payments and Insurance Proceeds of Identified Environmental Remediation Liabilities (USD $) In Thousands, unless otherwise specified | May 31, 2014 | Aug. 31, 2013
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Anticipated Payments and Insurance Proceeds of Identified Environmental Remediation Liabilities [Abstract] |  |
Estimated costs – current dollars | $ 4,308 |
Estimated costs – current dollars | 2,620 |
Estimated costs – current dollars | 1,887 |
Estimated costs – current dollars | 865 |
Estimated costs – current dollars | 797 |
Estimated costs – current dollars | 12,421 |
Estimated costs – current dollars | 22,898 |
Estimated insurance proceeds | 0 |
Estimated insurance proceeds | (173) |
Estimated insurance proceeds | (159) |
Estimated insurance proceeds | (173) |
Estimated insurance proceeds | (159) |
Estimated insurance proceeds | (1,592) |
Estimated insurance proceeds | (2,256) |
Net anticipated costs | 4,308 |
Net anticipated costs | 2,447 |
Net anticipated costs | 1,728 |
Net anticipated costs | 692 |
Net anticipated costs | 638 |
Net anticipated costs | 10,829 |
Net anticipated costs | 20,642 |
Effect of inflation | 7,591 |
Effect of discounting | (8,219) |
Balance as of May 31, 2014 | $ 20,014 | $ 19,680

X
- Definition The amount of inflation necessary to increase (reconcile) the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies to the present value recognized on the balance sheet (if the accrual qualifies for inflation). + References No definition available. + Details
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- Definition Accrual for environmental loss contingencies, net of estimated insurance proceeds, total. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, after the fifth year of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, in five years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, in four years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, in three years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, in two years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the accrual for environmental loss contingencies that is expected to be paid, net of estimated insurance proceeds expected to be received, within one year of the balance sheet date. + References No definition available. + Details
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- Definition The estimated aggregate undiscounted amount of the estimated insurance proceeds accrual for environmental loss contingencies as of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received after the fifth year of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received within five years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received within four years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received within two years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received within three years of the balance sheet date. + References No definition available. + Details
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- Definition The portion of the estimated aggregate undiscounted amount of the insurance proceeds for environmental loss contingencies that is expected to be received within one year of the balance sheet date. + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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