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Note 13 - Fair Value Measurements
 9 Months Ended
May 31, 2020
Notes to Financial Statements  
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
13.
       
Fair Value Measurements
 
Assets and liabilities that are measured at fair value on a recurring basis primarily relate to equity securities in an ultra-short bond fund. These items are marked-to-market at each reporting period, and the Company estimates that market value approximates costs.
 
The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis:
       
Fair Value Measurements
Using Inputs Considered as
   
Fair value as of
May 31, 2020
   Level 1   Level 2   Level 3
Available for sale securities   $
5,450,693
     $
5,450,693
     $
—
     $
—
  
 
       
Fair Value Measurements
Using Inputs Considered as
   
Fair value as of
August 31, 2019
   Level 1   Level 2   Level 3
Available for sale securities   $
3,565,258
     $
3,565,258
     $
—
     $
—
  
 
Financial assets that are classified as Level
1
securities include cash equivalents and available for sale securities. These are valued using quoted market prices in an active market. There were
no
transfers between Level
1,
Level
2,
or Level
3
during the
three
and
nine
months ended
May 
31,
2020
and
2019.