Note 11 - Warranty Accrual (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
	(Dollars in thousands)
Balance at beginning of period	$	25,113		$	20,770		$	21,909		$	20,678
Expense provisions		3,749			2,836			6,347			5,243
Cash payments		(3,196	)		(2,641	)		(5,696	)		(5,006	)
Adjustments		-			-			3,106			50
Balance at end of period	$	25,666		$	20,965		$	25,666		$	20,965