Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net Sales	$ 263,099	$ 253,171	$ 496,776	$ 453,786
Cost of sales	196,895	209,052	380,416	379,752
Gross profit	66,204	44,119	116,360	74,034
Selling, general, and administrative expense	40,427	32,918	76,976	53,863
Income from operations	25,777	11,201	39,384	20,171
Interest expense	3,666	3,811	7,357	7,511
Other expense (income)	8,035	1,101	7,840	(2,458)
Income before taxes	14,076	6,289	24,187	15,118
(Benefit of) provision for income taxes	(2,913)	2,202	705	5,494
Income from continuing operations	16,989	4,087	23,482	9,624
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	$ 16,989	$ 4,087	$ 23,482	$ 9,596
Net earnings per share – Basic:
Income from continuing operations	$ 0.54	$ 0.13	$ 0.75	$ 0.31
Loss from discontinued operations	0.00	0.00	0.00	0.00
Net income	$ 0.54	$ 0.13	$ 0.75	$ 0.31
Weighted average shares outstanding – Basic	31,475	31,210	31,447	31,200
Net earnings per share – Diluted:
Income from continuing operations	$ 0.53	$ 0.13	$ 0.74	$ 0.31
Loss from discontinued operations	0.00	0.00	0.00	0.00
Net income	$ 0.53	$ 0.13	$ 0.74	$ 0.31
Weighted average shares outstanding – Diluted	32,007	31,495	31,916	31,440