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Note 14 - Net Loss Per Common Share (Tables)
6 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
 
 
 
Three Months Ended
 
 
 
 
December 31,
 
 
 
 
2020
   
2019
 
Warrants to purchase common stock - liability classified
   
24,105
     
24,105
 
Warrant to purchase common stock - equity classified
(Note 13)
   
2,691,446
     
1,621,891
 
Employee stock options
(Note 12)
   
73,425
     
156
 
Employee unvested restricted stock
(Note 12)
   
365,869
     
234,261
 
Convertible preferred stock
(Note 11)
   
-
     
315,115
 
 
 
   
3,154,845
     
2,195,528