Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net Sales	$ 206,605	$ 237,671
Cost of sales	157,350	183,521
Gross profit	49,255	54,150
Selling, general, and administrative expense	39,576	36,389
Income from operations	9,679	17,761
Interest expense	3,576	3,691
Other expense (income)	54	(35)
Income before taxes	6,049	14,105
Provision for income taxes	2,053	5,076
Net income	$ 3,996	$ 9,029
Net earnings per share:
Net earnings per share - Basic (in USD per share)	$ 0.13	$ 0.29
Net earnings per share - Diluted (in USD per share)	$ 0.12	$ 0.28
Weighted average shares outstanding:
Weighted average shares outstanding, basic (in USD per share)	31,688	31,423
Weighted average shares outstanding, diluted (in USD per share)	32,254	31,790