Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net revenues	$ 163,415	$ 181,021
Cost of sales	148,791	179,011
Gross profit	14,624	2,010
Goodwill impairment		(6,689)
Selling, general and administrative expenses	(15,179)	(16,348)
Loss from operations	(555)	(21,027)
Net interest expense	(6,053)	(5,746)
Other income (expense), net	1,617	(10,427)
Royalty income and other	2,057	2,179
Loss before income taxes	(2,934)	(35,021)
Income tax provision (benefit)	116	(21,093)
Net loss	(3,050)	(13,928)
Net loss attributable to redeemable noncontrolling interests	(172)	(1,990)
Net loss attributable to common shareholders	$ (2,878)	$ (11,938)
Loss per share of common stock:
Basic	$ (0.02)	$ (0.09)
Diluted	$ (0.02)	$ (0.09)
Weighted average common shares outstanding (in shares)
Basic	149,935	148,863
Diluted	149,935	148,863