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13. Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments And Contingencies Tables  
Schedule for product warranties
    Balance at
Beginning of
Year
  Warranties
Issued
  Warranties
Settled
  Balance at
End of
Year
2013     $267     $292     $(267)     $292
2012     $247     $267     $(247)     $267