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13. Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Commitments And Contingencies Tables  
Schedule for product warranties
   

Balance at

Beginning of

Year

   

Warranties

Issued

   

Warranties

Settled

   

Balance at

End of

Year

 
2014   $ 292     $ 384     $ (292 )   $ 384  
2013   $ 267     $ 292     $ (267 )   $ 292