Condensed Consolidated Statement of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net sales	$ 184,676	$ 245,469	$ 606,607	$ 748,371
Costs and expenses:
Cost of materials (exclusive of depreciation and amortization)	137,770	184,417	478,283	564,513
Warehouse, processing and delivery expense	29,392	34,440	87,340	106,568
Sales, general and administrative expense	22,397	25,185	73,615	84,280
Restructuring expense (income)	1,204	(5,147)	17,653	(3,501)
Depreciation and amortization expense	5,994	6,399	18,661	19,389
Impairment of goodwill		0	0	56,160
Total Costs and Expenses	196,757	245,294	675,552	827,409
Operating income (loss)	(12,081)	175	(68,945)	(79,038)
Interest expense, net	(10,506)	(10,148)	(31,426)	(29,988)
Other expense, net	(2,270)	(2,335)	(4,532)	(1,427)
Loss before income taxes and equity in earnings (losses) of joint venture	(24,857)	(12,308)	(104,903)	(110,453)
Income tax benefit (expense)	17	2,770	(889)	8,918
Loss before equity in earnings (losses) of joint venture	(24,840)	(9,538)	(105,792)	(101,535)
Equity in earnings (losses) of joint venture	(1,460)	2,213	(134)	5,914
Net loss	$ (26,300)	$ (7,325)	$ (105,926)	$ (95,621)
Basic loss per common share	$ (1.12)	$ (0.31)	$ (4.50)	$ (4.10)
Diluted loss per common share	$ (1.12)	$ (0.31)	$ (4.50)	$ (4.10)
Comprehensive loss	$ (28,571)	$ (9,135)	$ (110,030)	$ (96,298)