Warranties (Tables)

3 Months Ended

Mar. 31, 2022

Guarantees [Abstract]

Warranty

Changes in the warranty accrual are as follows:

	Three Months Ended
	March 31, 2022		March 31, 2021
Warranty accrual:	(in thousands)
Balance, beginning of period	$	13,769	$	13,522
Payments made	(1,219)		(1,464)
Provisions	1,157		1,467
Balance, end of period	$	13,707	$	13,525
Warranty expense:	$	1,157	$	1,467