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Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2021
Commitments and Contingencies  
Product warranty accrued liability The following table reflects the change in our warranty accrual which is included in “Accrued liabilities” in the condensed consolidated balance sheets, during the three and nine months ended September 30, 2021 and 2020 (in thousands):

Three Months Ended

Nine Months Ended

 

September 30, 

September 30, 

 

    

2021

    

2020

    

2021

    

2020

 

Beginning accrued product warranty

$

792

$

352

$

609

$

387

Accruals for warranties issued

 

48

 

195

 

549

 

384

Adjustments related to pre-existing warranties including expirations and changes in estimates

 

(50)

 

171

 

(189)

 

99

Cost of warranty repair

 

(128)

 

(189)

 

(307)

 

(341)

Ending accrued product warranty

$

662

$

529

$

662

$

529