XML 30 R20.htm IDEA: XBRL DOCUMENT v3.21.2
Note 6 - Product Warranties (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
  

June 30,

 
  

2021

  

2020

 

Balance at beginning of year

 $1,361  $1,438 

Provision

  886   528 

Claims

  (857)  (628

)

Balance at end of period

 $1,390  $1,338