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Note 4 - Contingencies
9 Months Ended
Sep. 30, 2019
Notes to Financial Statements  
Contingencies Disclosure [Text Block]
NOTE
4
–CONTINGENCIES
 
Accrued Warranty
 
We provide a
three
-year advance replacement warranty on all XLS and RLS libraries and a
two
-year warranty on our Q-Series libraries. This includes replacement of components, or if necessary, complete libraries. XLS libraries sold in North America also include
one
year of on-site service. Customers
may
purchase on-site service if they are located in the United States, Canada, and selected countries in Europe, Asia Pacific and Latin America. All customers
may
purchase extended warranty service coverage upon expiration of the standard warranty.
 
We provide a
three
-year warranty on all power supplies that includes repair or if necessary, replacement of the power supply.
 
A provision for costs related to warranty expense is recorded when revenue is recognized, which is estimated based on historical warranty costs incurred.
 
Activity in the liability for product warranty (included in other accrued liabilities) for the periods presented is as follows (in thousands):
 
   
Nine
months
Ended
September 30,
2019
   
Year
Ended
December 31,
201
8
 
   
(unaudited)
         
Beginning balance
  $
365
    $
322
 
Cost of warranty claims
   
(13
)
   
(15
)
Accruals for product warranties
   
(11
)
   
58
 
Ending balance
  $
341
    $
365