Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net Sales	$ 272,734	$ 304,994	$ 776,143	$ 758,780
Cost of sales	204,847	243,598	585,263	623,350
Gross profit	67,887	61,396	190,880	135,430
Selling, general, and administrative expense	41,524	38,002	118,500	91,865
Income from operations	26,363	23,394	72,380	43,565
Interest expense	3,625	3,878	10,982	11,389
Other (income) expense	0	(1,780)	7,840	(4,238)
Income before taxes	22,738	21,296	53,558	36,414
Provision for income taxes	8,952	7,664	12,131	13,158
Income from continuing operations	13,786	13,632	41,427	23,256
Discontinued operations:
Loss before taxes	0	0	0	(44)
Benefit of income taxes	0	0	0	(16)
Loss from discontinued operations	0	0	0	(28)
Net income	$ 13,786	$ 13,632	$ 41,427	$ 23,228
Net earnings per share – Basic:
Income from continuing operations	$ 0.44	$ 0.44	$ 1.32	$ 0.74
Loss from discontinued operations	0.00	0.00	0.00	0.00
Net earnings per share - Basic (in USD per share)	$ 0.44	$ 0.44	$ 1.32	$ 0.74
Weighted average shares outstanding – Basic	31,579	31,242	31,493	31,214
Net earnings per share – Diluted:
Income from continuing operations	$ 0.43	$ 0.43	$ 1.29	$ 0.74
Loss from discontinued operations	0.00	0.00	0.00	0.00
Net earnings per share - Diluted (in USD per share)	$ 0.43	$ 0.43	$ 1.29	$ 0.74
Weighted average shares outstanding – Diluted	32,176	31,558	32,005	31,479