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Debt - Long-term Debt and Capital Lease Obligations Current and Non Current (Detail) (USD $)
In Thousands, unless otherwise specified |
Aug. 31, 2012
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Aug. 31, 2011
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|---|---|---|
| Debt Instrument [Line Items] | ||
| Capital lease obligations | $ 423 | $ 490 |
| Debt and capital lease obligations, including current portion and short-term borrowings | 84,462 | 24,223 |
| Less: current portion and short-term borrowings | 458 | 421 |
| Long-term debt and capital lease obligations | 84,004 | 23,802 |
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Secured Debt [Member]
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| Debt Instrument [Line Items] | ||
| Carrying amount of debt | 82,606 | 22,100 |
| Secured credit agreements - weighted average interest rate (in percentage) | 4.23% | |
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Iowa Department of Economic Development Loans [Member]
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| Debt Instrument [Line Items] | ||
| Carrying amount of debt | $ 1,433 | $ 1,633 |