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Other Assets (Tables) | 12 Months Ended
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Aug. 31, 2015
Other Assets [Abstract] |
Schedule of Finite-Lived Intangible Assets [Table Text Block] | Intangible assets subject to amortization primarily include customer lists, trademarks and agreements not to compete, and are amortized over their respective useful lives (ranging from 2 to 30 years). Information regarding intangible assets included in other assets on our Consolidated Balance Sheets is as follows:
| August 31, 2015 |  | August 31, 2014
| Carrying Amount |  | Accumulated Amortization |  | Net |  | Carrying Amount |  | Accumulated Amortization |  | Net
| (Dollars in thousands)
Customer lists | $ | 70,925 |  |  | $ | (30,831 | ) |  | $ | 40,094 |  |  | $ | 69,862 |  |  | $ | (26,114 | ) |  | $ | 43,748 |
Trademarks and other intangible assets | 42,688 |  |  | (32,134 | ) |  | 10,554 |  |  | 41,293 |  |  | (29,587 | ) |  | 11,706 |
Total intangible assets | $ | 113,613 |  |  | $ | (62,965 | ) |  | $ | 50,648 |  |  | $ | 111,155 |  |  | $ | (55,701 | ) |  | $ | 55,454 |
Schedule of Other Assets | Other assets as of August 31, 2015 and 2014 are as follows:
| 2015 |  | 2014
| (Dollars in thousands)
Goodwill | $ | 150,115 |  |  | $ | 158,696 |
Customer lists, trademarks and other intangible assets | 50,648 |  |  | 55,454 |
Notes receivable | 197,067 |  |  | 166,901 |
Long-term receivable | 35,191 |  |  | 40,718 |
Prepaid pension and other benefits | 138,497 |  |  | 186,342 |
Capitalized major maintenance | 241,588 |  |  | 67,643 |
Other | 211,378 |  |  | 119,325 |
| $ | 1,024,484 |  |  | $ | 795,079 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The estimated annual amortization expense related to intangible assets subject to amortization for the next five years is as follows:
| (Dollars in thousands)
Year 1 | $ | 7,086 |
Year 2 | 5,558 |
Year 3 | 4,290 |
Year 4 | 3,808 |
Year 5 | 3,460 |
Thereafter | 26,350 |
Total | $ | 50,552 |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure | capitalized major maintenance costs is summarized below:
| Balance at Beginning of Year |  | Cost Deferred |  | Amortization |  | Balance at End of Year
| (Dollars in thousands)
2015 | $ | 67,643 |  |  | $ | 219,898 |  |  | $ | (45,953 | ) |  | $ | 241,588 |
2014 | 109,408 |  |  | 3,305 |  |  | (45,070 | ) |  | 67,643 |
2013 | 70,554 |  |  | 73,701 |  |  | (34,847 | ) |  | 109,408 |
Schedule of Goodwill [Table Text Block] | Changes in the net carrying amount of goodwill for the year ended August 31, 2015, by segment, are as follows:
| Energy |  | Ag |  | Corporate and Other |  | Total
| (Dollars in thousands)
Balances, August 31, 2013 | $ | 552 |  |  | $ | 77,613 |  |  | $ | 6,898 |  |  | $ | 85,063 |
Goodwill acquired during the period | — |  |  | 72,913 |  |  | — |  |  | 72,913 |
Effect of foreign currency translation adjustments | — |  |  | 720 |  |  | — |  |  | 720 |
Balances, August 31, 2014 | $ | 552 |  |  | $ | 151,246 |  |  | $ | 6,898 |  |  | $ | 158,696 |
Goodwill acquired during the period (1) | — |  |  | (3,283 | ) |  | — |  |  | (3,283 | )
Effect of foreign currency translation adjustments | — |  |  | (5,298 | ) |  | — |  |  | (5,298 | )
Balances, August 31, 2015 | $ | 552 |  |  | $ | 142,665 |  |  | $ | 6,898 |  |  | $ | 150,115 |
(1) Includes measurement period adjustments related to current and prior year acquisitions. Goodwill acquired during the period was $0.4 million.

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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