Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Accrued Liabilities

At December 31, accrued liabilities were comprised of the following:

	December 31,
	2018		2017
	(in thousands)
Warranty	$	11,421	$	10,483
Due to representatives	11,024		13,086
Payroll	4,182		4,456
Profit sharing	1,835		2,034
Workers' compensation	567		593
Medical self-insurance	1,207		725
Customer prepayments	2,367		2,838
Donations	150		588
Employee vacation time	3,173		2,688
Other	1,529		1,607
Total	$	37,455	$	39,098