Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 1,040,873	$ 862,087	$ 827,567
Cost of sales	853,897	722,042	669,470
Gross profit	186,976	140,045	158,097
Selling, general, and administrative expense	134,028	102,492	113,457
Intangible asset impairment	4,863	107,970	23,160
Income (loss) from operations	48,085	(70,417)	21,480
Interest expense	15,003	14,421	22,489
Other income	(4,018)	(88)	(177)
Income (loss) before taxes	37,100	(84,750)	(832)
Provision for (benefit of) income taxes	13,624	(2,958)	4,797
Income (loss) from continuing operations	23,476	(81,792)	(5,629)
Discontinued operations:
Loss before taxes	(44)	(51)	(7)
Benefit of income taxes	(16)	(19)	(3)
Loss from discontinued operations	(28)	(32)	(4)
Net income (loss)	$ 23,448	$ (81,824)	$ (5,633)
Net earnings per share – Basic:
(Loss) income from continuing operations (in dollars per share)	$ 0.75	$ (2.63)	$ (0.18)
Loss from discontinued operations (in dollars per share)	0.00	0.00	0.00
Net (loss) income (in dollars per share)	$ 0.75	$ (2.63)	$ (0.18)
Weighted average shares outstanding – Basic (in shares)	31,233	31,066	30,930
Net earnings per share – Diluted:
Income (Loss) from Continuing Operations, Per Diluted Share	$ 0.74	$ (2.63)	$ (0.18)
Loss from discontinued operations (in dollars per share)	0.00	0.00	0.00
Net (loss) income (in dollars per share)	$ 0.74	$ (2.63)	$ (0.18)
Weighted average shares outstanding – Diluted (in shares)	31,545	31,066	30,930