Warranties (Tables)

12 Months Ended

Dec. 31, 2019

Guarantees [Abstract]

Warranty

Changes in the warranty accrual are as follows:

	Years Ended December 31,
	2019		2018		2017
Warranty accrual:	(in thousands)
Balance, beginning of period	$	11,421	$	10,483	$	7,936
Payments made	(6,816)		(7,869)		(8,686)
Provisions	8,047		9,669		11,233
Change in estimate	—		(862)		—
Balance, end of period	$	12,652	$	11,421	$	10,483
Warranty expense:	$	8,047	$	8,807	$	11,233