Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales	$ 781,828	$ 793,420	$ 822,345
Freight billed to customers	3,328	2,790	2,885
Total revenues	785,156	796,210	825,230
Cost of sales	634,185	629,916	648,902
Gross profit	150,971	166,294	176,328
Selling, general and administrative expenses	124,926	120,984	132,607
Goodwill impairment	79,700	0	0
Income (loss) from operations	(53,655)	45,310	43,721
Other income (expense)	(3,515)	3,362	2,880
Earnings (loss) before interest and income taxes	(57,170)	48,672	46,601
Interest expense	20,400	20,888	18,484
Income (loss) before income taxes	(77,570)	27,784	28,117
Provision (benefit) for income taxes	15,798	17,711	(38,216)
Net income (loss)	$ (93,368)	$ 10,073	$ 66,333
Net income (loss) per share:
Basic	$ (4.24)	$ 0.46	$ 3.04
Diluted	$ (4.24)	$ 0.46	$ 2.99
Weighted average shares:
Basic	22,030,672	21,879,613	21,816,935
Diluted	22,030,672	22,048,943	22,159,149
Dividends declared per share	$ 0.47	$ 0.46	$ 0.44