CONTINGENCIES (Tables)

3 Months Ended

Mar. 31, 2019

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, 2019 and 2018 (in thousands):

	Three Months Ended March 31,
	2019			2018
Accrual balance at beginning of year	$	1,706		$	2,545
Accruals for product warranties	227			505
Costs of warranty claims	(338		)	(568		)
Accrual balance at end of period	$	1,595		$	2,482