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14. Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Commitments And Contingencies Details    
Warranties, Beginning $ 538 $ 384
Warranties Issued 709 538
Warranties Settled (597) (384)
Warranties, Ending $ 650 $ 538