Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net Sales	$ 304,994	$ 234,101	$ 758,780	$ 660,093
Cost of sales	243,598	192,523	623,350	548,528
Gross profit	61,396	41,578	135,430	111,565
Selling, general, and administrative expense	38,002	23,186	91,865	78,167
Income from operations	23,394	18,392	43,565	33,398
Interest expense	3,878	3,657	11,389	10,988
Other income	(1,780)	(664)	(4,238)	(172)
Income before taxes	21,296	15,399	36,414	22,582
Provision for income taxes	7,664	5,828	13,158	8,666
Income from continuing operations	13,632	9,571	23,256	13,916
Discontinued operations:
Loss before taxes	0	(51)	(44)	(51)
Benefit of income taxes	0	(20)	(16)	(20)
Loss from discontinued operations	0	(31)	(28)	(31)
Net income	$ 13,632	$ 9,540	$ 23,228	$ 13,885
Net earnings per share – Basic:
Income from continuing operations	$ 0.44	$ 0.31	$ 0.74	$ 0.45
Loss from discontinued operations	0.00	(0.01)	0.00	(0.01)
Net income	$ 0.44	$ 0.30	$ 0.74	$ 0.44
Weighted average shares outstanding – Basic	31,242	31,083	31,214	31,046
Net earnings per share – Diluted:
Income from continuing operations	$ 0.43	$ 0.31	$ 0.74	$ 0.45
Loss from discontinued operations	0.00	(0.01)	0.00	(0.01)
Net income	$ 0.43	$ 0.30	$ 0.74	$ 0.44
Weighted average shares outstanding – Diluted	31,558	31,298	31,479	31,256