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CONTINGENCIES (Tables)
6 Months Ended
Jun. 30, 2022
Commitments and Contingencies Disclosure [Abstract]  
Product warranty accrual activity The following table sets forth the activity in the product warranty accrual account for the six months ended June 30, 2022 and 2021 (in thousands):
Six Months Ended June 30,
20222021
Accrual balance at beginning of period$1,219 $1,095 
Accruals for product warranties305 827 
Costs of warranty claims(551)(601)
Accrual balance at end of period$973 $1,321