Note 11 - Warranty Accrual (Tables)

6 Months Ended

Jun. 30, 2017

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
	(Dollars in thousands)
Balance at beginning of period	$	20,770		$	16,852		$	20,678		$	15,328
Expense provisions		2,836			2,305			5,243			3,757
Cash payments		(2,641	)		(2,190	)		(5,006	)		(5,105	)
Adjustments		-			250			50			3,237
Balance at end of period	$	20,965		$	17,217		$	20,965		$	17,217