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CONTINGENCIES (Tables)
3 Months Ended
Mar. 31, 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 three months ended March 31, 2022 and 2021 (in thousands):
Three Months Ended March 31,
20222021
Accrual balance at beginning of period$1,219 $1,095 
Accruals for product warranties321 466 
Costs of warranty claims(306)(374)
Accrual balance at end of period$1,234 $1,187