Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net revenue	$ 2,122,693	$ 2,350,840
Cost of goods sold	1,854,134	2,074,219
Gross margin	268,559	276,621
Distribution, selling and administrative expenses	254,048	255,112
Acquisition-related and exit and realignment charges	6,064	4,863
Other operating (income) expense, net	(2,309)	42
Operating income	10,756	16,604
Interest expense, net	23,342	25,458
Other expense, net	4,846	2,734
Loss from continuing operations before income taxes	(17,432)	(11,588)
Income tax benefit	(8,523)	(670)
Loss from continuing operations, net of tax	(8,909)	(10,918)
Loss from discontinued operations, net of tax	(2,415)	(3,178)
Net loss	$ (11,324)	$ (14,096)
Loss from continuing operations per common share: basic and diluted (in usd per share)	$ (0.15)	$ (0.18)
Loss from discontinued operations per common share: basic and diluted (in usd per share)	(0.04)	(0.05)
Net loss per common share: basic and diluted (in usd per share)	$ (0.19)	$ (0.23)