Product Warranty (Tables)

6 Months Ended

Jun. 30, 2022

Product Warranty

Schedule of product warranty liability

	Six months ended
	June 30,
	2022		2021
	(in thousands)
Balance at January 1 (beginning of year)	$	6,924	$	4,612
Warranties issued during the period		4,902		3,013
Settlements made during the period		(2,819)		(1,991)
Changes in estimate of liability for pre-existing warranties during the period		12		(372)
Balance at June 30 (end of period)	$	9,019	$	5,262
Amount classified as current	$	8,348	$	4,690
Amount classified as long-term		671		572
Total warranty liability	$	9,019	$	5,262