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Note D - Product Warranties
9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Product Warranty Disclosure [Text Block]
NOTE D - PRODUCT WARRANTIES
 
A liability is established for estimated future warranty and service claims based on historical claims experience and specific product failures. The Company expenses warranty costs directly to cost of products sold. Changes in the Company’s product warranty liability are:
 
 
   
September 30,
 
(Dollars in thousands)
 
2016
   
2015
 
Balance at beginning of year
  $ 1,380     $ 1,166  
Provision
    1,572       1,104  
Claims
    (1,418 )     (1,003 )
Balance at end of period
  $ 1,534     $ 1,267