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13. Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Commitments And Contingencies Details    
Warranties, Beginning $ 384 $ 292
Warranties Issued 538 384
Warranties Settled (384) (292)
Warranties, Ending $ 538 $ 384