Note 10 - Warranty Costs (Tables)

9 Months Ended

Sep. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	Nine Months Ended September 30,
	2013			2012
	(Dollars in thousands)
Warranty accrual, beginning of the period	$	15,514		$	17,572
Warranty costs accrued during the period		1,789			1,034
Warranty costs paid during the period		(2,844	)		(2,677	)
Warranty accrual, end of the period	$	14,459		$	15,929