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Balance Sheet Details - Components of Property, Plant and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified |
May 31, 2014
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Aug. 31, 2013
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|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 384,790 | $ 377,045 |
| Accumulated depreciation | (273,029) | (264,904) |
| Net property, plant and equipment | 111,761 | 112,141 |
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Land and land improvements [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 12,159 | 11,881 |
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Plant and equipment [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | 363,974 | 359,909 |
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Construction in progress [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property, plant and equipment, gross | $ 8,657 | $ 5,255 |