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Inventories (Tables) | 12 Months Ended
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Aug. 31, 2012
Inventories [Abstract] |
Schedule Of Inventories |
|  | August 31,
$ in thousands |  | 2012 |  | 2011
Inventory: |  |  |  |  |  |
FIFO inventory |  | $ | 23,082 |  | $ | 22,614
LIFO reserves |  |  | (6,912) |  |  | (7,178)
LIFO inventory |  |  | 16,170 |  |  | 15,436
Weighted average inventory |  |  | 20,918 |  |  | 20,848
Other FIFO inventory |  |  | 17,433 |  |  | 15,407
Obsolescence reserve |  |  | (1,648) |  |  | (2,167)
Total inventories |  | $ | 52,873 |  | $ | 49,524
Schedule Of Estimated Percentage Distribution |
|  | August 31,
|  | 2012 |  | 2011
Raw materials |  |  | 16% |  |  | 14%
Work in process |  |  | 7% |  |  | 8%
Finished goods and purchased parts |  |  | 77% |  |  | 78%

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- Definition Percentage Distribution Between Major Classes Of Inventory [Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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