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Note 5 - New Accounting Standards (Tables)
3 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
   
Amount
 
Accumulated other comprehensive earnings, 7/2/2018
  $
2,102,745
 
Reclassification to retained earnings of cumulative effect adjustment to initially apply new accounting guidance for equity investments which were previously classified as available-for-sale, net of tax $1,394,695
   
(2,102,745
)
Accumulated other comprehensive earnings as adjusted, 7/2/2018
   
-
 
         
Retained earnings, 7/2/2018
   
14,010,725
 
Reclassification from accumulated other comprehensive income of cumulative effect adjustment to initially apply new accounting guidance for equity investments which were previously classified as available-for-sale, net of tax, $1,394,695
   
2,102,745
 
Retained earnings as adjusted, 7/2/2018
  $
16,113,470