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Note 14 - Supplemental Cash Flow Information (Tables)
6 Months Ended
Feb. 29, 2020
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
    Three Months Ended   Six Months Ended
   
February 29,
2020
 
February 28,
2019
 
February 29,
2020
 
February 28,
2019
Cash paid for interest   $
9,377
    $
3,835
    $
14,821
    $
6,192
 
Cash paid for income taxes    
    $
53,975
     
    $
53,975