XML 34 R20.htm IDEA: XBRL DOCUMENT v3.7.0.1
Product Warranties
 12 Months Ended
Dec. 31, 2016
Guarantees [Abstract]  
Product Warranties

12.  PRODUCT WARRANTIES

Product warranty activity for the years ended December 31 was as follows (in thousands):

 

     2016      2015      2014  

Balance at the beginning of the period

    $ 585      $ 204      $ 283  

Accruals for warranties for products sold in the period

      358        715        281  

Fulfillment of warranty obligations

      (527 )       (334 )       (350 ) 

Revisions of estimated obligations

      (202 )       —        (10 ) 
  

 

 

     

 

 

     

 

 

  

Balance at the end of the period

    $ 214      $ 585      $ 204