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Note 2 - Allowance for Doubtful Accounts Receivable
12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
NOTE
2
- Allowance for Doubtful Accounts Receivable
:
 
The activity in the allowance for doubtful accounts receivable was as follows (in thousands)
:
 
   
201
7
   
201
6
   
201
5
 
Balance at the beginning of yea
r
  $
1,276
    $
848
    $
680
 
                         
Provision for bad debt
s
   
1,002
     
523
     
266
 
                         
Charge-off
s
   
(901
)    
(96
)    
(98
)
                         
Recoverie
s
   
5
     
1
     
-
 
                         
Balance at the end of yea
r
  $
1,382
    $
1,276
    $
848