Quarterly Results of Operations (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Results of Operations [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

(Dollars in thousands, except per share amounts)	2012
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	120,155		$	125,296	$	129,134	$	124,176
Gross Margin	36,404			36,654		42,977		42,711
Income (loss) from continuing operations	(1,586		)	6,417		59,124		5,179
Net income per share:
Basic	$	(0.10	)	$	0.40	$	3.60	$	0.31
Diluted	(0.10		)	0.39		3.48		0.30
(Dollars in thousands, except per share amounts)	2011
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	134,628		$	142,167	$	146,295	$	125,251
Gross Margin	42,453			48,452		50,906		37,174
Income (loss) from continuing operations	11,118			13,488		15,904		3,740
Net income per share:
Basic	$	0.70		$	0.85	$	0.98	$	0.23
Diluted	0.67			0.81		0.94		0.22