Warranties (Tables)

6 Months Ended

Jun. 30, 2021

Guarantees [Abstract]

Warranty

Changes in the warranty accrual are as follows:

	Three Months Ended				Six Months Ended
	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Warranty accrual:	(in thousands)
Balance, beginning of period	$	13,525	$	12,940	$	13,522	$	12,652
Payments made	(1,545)		(1,617)		(3,009)		(2,794)
Provisions	2,028		1,837		3,495		3,302
Balance, end of period	$	14,008	$	13,160	$	14,008	$	13,160
Warranty expense:	$	2,028	$	1,837	$	3,495	$	3,302