Quarterly Results of Operations (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Results of Operations [Abstract]

Quarterly financial information

(Dollars in thousands, except per share amounts)	2013
	First Quarter			Second Quarter		Third Quarter		Fourth Quarter
Net sales	$	125,979		$	132,452	$	142,820	$	136,231
Gross margin	41,289			44,429		51,186		50,796
Income (loss) from continuing operations	6,976			5,583		13,572		11,528
Net income per share:
Basic	$	0.41		$	0.33	$	0.79	$	0.66
Diluted	0.39			0.32		0.76		0.64
(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