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Note 10 - Asset Retirement Obligations (Tables)
 6 Months Ended
Feb. 25, 2017
Notes Tables  
Schedule of Asset Retirement Obligations [Table Text Block]
 
 
February
2
5
,
201
7
 
Beginning balance as of August 27, 2016
   $
13,032
  
Accretion expense
    
423
  
Effect of exchange rate changes
    
(217
)
Change in estimate
    
(357
)
Ending balance as of February 25, 2017
   $
12,881