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Note 3 - Reserve for Sales Returns and Allowance
12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Reserve For Sales Returns And Allowances Disclosure [Text Block]
NOTE
3
- Reserve for Sales Returns and Allowances:
 
The activity in the reserve for sales returns and allowances was as follows:
 
   
2016
   
2015
   
2014
 
Balance at the beginning of year
  $
1,384,000
    $
1,308,000
    $
793,000
 
                         
Provision for returns and allowances
   
4,445,000
     
4,547,000
     
6,024,000
 
                         
Actual returns and allowances paid to customers
   
(3,862,000
)    
(4,471,000
)    
(5,509,000
)
                         
Balance at the end of year
  $
1,967,000
    $
1,384,000
    $
1,308,000