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Commitments And Contingencies (Tables)
 9 Months Ended
May 31, 2018
Commitments And Contingencies Disclosure [Abstract]  
Summary Of Undiscounted Environmental Remediation Liability Classifications

 

($ in thousands)

 

May 31,

2018

 

 

May 31,

2017

 

 

August 31,

2017

 

Other current liabilities

 

$

1,281

 

 

$

2,134

 

 

$

2,095

 

Other noncurrent liabilities

 

 

15,513

 

 

 

16,161

 

 

 

15,937

 

Total environmental remediation liabilities

 

$

16,794

 

 

$

18,295

 

 

$

18,032