Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements Of Operations [Abstract]
Net sales	$ 217,412	$ 205,514	$ 638,732	$ 617,419
Cost of sales	175,650	165,286	516,087	499,984
Gross profit	41,762	40,228	122,645	117,435
Selling, general, and administrative expense	24,754	24,479	84,158	78,370
Intangible asset impairment	23,160		23,160
(Loss) income from operations	(6,152)	15,749	15,327	39,065
Interest expense	3,828	4,688	18,678	13,989
Other income	(66)	(55)	(141)	(401)
(Loss) income before taxes	(9,914)	11,116	(3,210)	25,477
Provision for income taxes	3,813	4,094	6,428	9,091
(Loss) income from continuing operations	(13,727)	7,022	(9,638)	16,386
Discontinued operations:
Income (loss) before taxes		162	(7)	9
Benefit of income taxes		(117)	(3)	(174)
Income (loss) from discontinued operations		(279)	4	(183)
Net (loss) income	$ (13,727)	$ 7,301	$ (9,642)	$ 16,569
Net earnings per share - Basic:
(Loss) income from continuing operations	$ (0.44)	$ 0.23	$ (0.31)	$ 0.53
Income from discontinued operations		$ 0.01		$ 0.01
Net (loss) income	$ (0.44)	$ 0.24	$ (0.31)	$ 0.54
Weighted average shares outstanding - Basic	30,946	30,765	30,916	30,739
Net earnings per share - Diluted:
(Loss) income from continuing operations	$ (0.44)	$ 0.23	$ (0.31)	$ 0.53
Income from discontinued operations		$ 0.01		$ 0.01
Net (loss) income	$ (0.44)	$ 0.24	$ (0.31)	$ 0.54
Weighted average shares outstanding - Diluted	30,946	30,838	30,916	30,834