XML 47 R33.htm IDEA: XBRL DOCUMENT v3.22.0.1
Product Warranties (Tables)
12 Months Ended
Dec. 31, 2021
Guarantees and Product Warranties [Abstract]  
Product Warranty Activity
Product warranty activity for the years ended December 31 was as follows (in thousands):
 
    
2021
    
2020
    
2019
 
Balance at the beginning of the period
   $ 308      $ 372      $ 268  
Accruals for warranties for products sold in the period
     158        366        250  
Fulfillment of warranty obligations
     (151      (398      (140
Revisions of estimated obligations
     (23      (32      (6
    
 
 
    
 
 
    
 
 
 
Balance at the end of the period
   $ 292      $ 308      $ 372