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Contingencies and Litigation
6 Months Ended
Jun. 30, 2011
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies Disclosure [Text Block]
Note H – Contingencies and Litigation
 
Product Warranties

We provide standard warranty coverage for most of our products, generally for one year from the date of customer acceptance. We record a liability for estimated warranty claims based on historical claims and other factors. We review these estimates on a regular basis and adjust the warranty reserves as actual experience differs from historical estimates or other information becomes available. This warranty liability primarily includes the anticipated cost of materials, labor and travel, and shipping necessary to repair and service the equipment.

The following table illustrates the changes in our warranty liability for the six-month period ended June 30, 2011 and 2010:

   
Amount
  
Amount
 
   
2011
  
2010
 
   
(in thousands)
 
Balance as of January 1
 $87  $108 
Product warranties issued
  -   2 
Estimate changes for preexisting warranties
  (31)  - 
Payments made
  (1)  (4)
Balance as of June 30
 $55  $106