Note 10 - Warranty Costs (Tables)

9 Months Ended

Sep. 30, 2014

Product Warranties Disclosures [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

	Nine Months Ended September 30,
	2014			2013
	(Dollars in thousands)
Warranty accrual, beginning of the period	$	13,811		$	15,514
Warranty costs accrued during the period		4,950			1,789
Warranty costs paid during the period		(5,615	)		(2,844	)
Warranty accrual, end of the period	$	13,146		$	14,459