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Discontinued Operations Narrative (Detail) (USD $)
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3 Months Ended | 12 Months Ended | 3 Months Ended | 3 Months Ended | ||||||||||||
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Aug. 31, 2013
Segment
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May 31, 2013
Segment
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Aug. 31, 2012
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Aug. 31, 2013
Segment
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Aug. 31, 2012
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Aug. 31, 2011
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Aug. 31, 2013
Electrical
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Feb. 28, 2011
Electrical
Europe
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Aug. 31, 2013
Electrical
North America
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Aug. 31, 2012
Mastervolt International Holding B.V.
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Aug. 31, 2013
Mastervolt International Holding B.V.
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||||||||||||||
| Proceeds from sale of business | $ 4,854,000 | $ 0 | $ 3,463,000 | $ 3,500,000 | ||||||||||||
| pre-tax loss on disposal of business | 0 | [1] | 0 | [1] | 15,829,000 | [1] | 15,800,000 | |||||||||
| Loss on disposal of business, future lease payments | 11,400,000 | |||||||||||||||
| Number of reportable segments | 3 | 3 | 3 | |||||||||||||
| Impairment charges | (11,200,000) | 170,000,000 | 62,500,000 | 158,817,000 | 62,464,000 | 0 | 159,100,000 | |||||||||
| Goodwill impairment | (137,804,000) | (36,557,000) | 137,800,000 | 36,600,000 | ||||||||||||
| indefinite lived intangible asset (tradenames) impairment | 21,300,000 | 25,900,000 | ||||||||||||||
| Goodwill | 76,877,000 | 76,877,000 | 76,900,000 | 0 | ||||||||||||
| Goodwill and intangible asset impairment | 62,500,000 | |||||||||||||||
| Other intangible assets, net | $ 84,387,000 | $ 84,387,000 | ||||||||||||||
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| X | ||||||||||
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- Definition
Disposal Group, Including Discontinued Operations, Adjustment to Lease Liabilities Settlement No definition available.
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| X | ||||||||||
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- Definition
The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
For the disposal group, including a component of the entity (discontinued operation), carrying amount of goodwill (adjusted for any amortization recognized prior to adoption of FAS 142 and impairment charges). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
For the disposal group, including a component of the entity (discontinued operation), carrying value (net of any accumulated amortization and write-downs) of nonphysical assets (such as copyrights, customer lists, patents, trade names, core deposits, trade secrets, and contractual rights), not elsewhere itemized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. No definition available.
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| X | ||||||||||
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- Definition
Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an indefinite-lived intangible asset, other than goodwill, to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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| X | ||||||||||
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- Definition
The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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