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Commitments and Contingencies (Tables)
 3 Months Ended
Nov. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule Of Reserves For Environmental Liabilities [Table Text Block]
Changes in the Company’s environmental liabilities for the three months ended November 30, 2013 were as follows (in thousands):
Reporting Segment
 
Balance as of August 31, 2013
 
Liabilities Established (Released), Net
 
Payments and Other
 
Balance as of November 30, 2013
 
Short-Term
 
Long-Term
Metals Recycling Business
 
$
30,520

 
$
(329
)
 
$
(10
)
 
$
30,181

 
$
189

 
$
29,992

Auto Parts Business
 
18,774

 
292

 
—

 
19,066

 
554

 
18,512

Corporate
 
500

 
—

 
—

 
500

 
200

 
300

Total
 
$
49,794

 
$
(37
)
 
$
(10
)
 
$
49,747

 
$
943

 
$
48,804