Annual report pursuant to Section 13 and 15(d)

Business Segment, Geographic and Customer Information - Additional Information (Detail)

v2.4.0.6
Business Segment, Geographic and Customer Information - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Aug. 31, 2012
Aug. 31, 2012
Segment
Aug. 31, 2012
Maximum
Aug. 31, 2011
Maximum
Aug. 31, 2010
Maximum
Aug. 31, 2012
Electrical segments
Segment Reporting Information [Line Items]            
Number of reportable segments   4        
Non-cash asset impairment charges $ 62,464 $ 62,464       $ 62,500
Largest customer sales in fiscal year, percent     3.00% 3.00% 3.00%  
Export sales from domestic operation, as a percentage of total net sales     8.00% 8.00% 8.00%