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Warranties (Tables)
9 Months Ended
Sep. 30, 2016
Product Warranties Disclosures [Abstract]  
Warranty liability and related activity

Warranty liability and related activity consisted of the following (in thousands):

 

 

Nine-Month Periods Ended
September 30,

 

2016

 

2015

           

Beginning balance

$

           760

 

$

           966

Warranty provisions

 

           185

   

           168

Warranty claims

 

          (288)

   

          (299)

Adjustments to preexisting warranties

 

             27

   

          (102)

Ending balance

$

           684

 

$

           733