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Note 9 - Inventories, Net of Continuing Operations (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
September 30,
201
9
   
December 31, 2018
 
Raw materials
  $
1,852,768
    $
1,994,741
 
Work in process
   
3,124,781
     
3,052,224
 
Finished goods
   
11,454,025
     
12,300,010
 
In Transit
   
148,183
     
480,716
 
Allowance for excess quantities
   
(293,306
)    
(439,057
)
Total inventories
  $
16,286,452
    $
17,388,634