Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations Income Statement and Balance Sheet Summary (Details)

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Discontinued Operations Income Statement and Balance Sheet Summary (Details) (USD $)
 3 Months Ended 9 Months Ended
May 31, 2013
May 31, 2012
May 31, 2013
May 31, 2012
Aug. 31, 2012
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]          
Income (loss) from discontinued operations, net of taxes $ (139,060,000) $ 6,664,000 $ (130,667,000) $ 14,390,000  
Assets of Disposal Group, Including Discontinued Operation [Abstract]          
Accounts receivable, net 42,745,000   42,745,000    
Inventories, net 57,837,000   57,837,000    
Property, plant & equipment, net 9,193,000   9,193,000    
Goodwill 76,937,000   76,937,000    
Other intangible assets, net 56,656,000   56,656,000    
Other assets 20,690,000   20,690,000    
Assets of discontinued operations 264,058,000   264,058,000   0
Liabilities of Disposal Group, Including Discontinued Operation [Abstract]          
Trade accounts payable 19,844,000   19,844,000    
Other current liabilities 12,167,000   12,167,000    
Deferred income taxes 8,833,000   8,833,000    
Other long-term liabilities 11,439,000   11,439,000    
Liabilities of discontinued operations 52,283,000   52,283,000   0
Electrical
          
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]          
Net Sales 74,834,000 85,947,000 214,175,000 245,885,000  
Operating income 11,903,000 8,801,000 25,084,000 19,800,000  
Impairment charge (170,339,000) 0 (170,339,000) 0  
Income tax benefit (expense) 19,376,000 (2,137,000) 14,588,000 (5,410,000)  
Income (loss) from discontinued operations, net of taxes (139,060,000) 6,664,000 (130,667,000) 14,390,000  
Assets of Disposal Group, Including Discontinued Operation [Abstract]          
Goodwill $ 76,900,000   $ 76,900,000