Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net revenues	$ 180,716	$ 193,490	$ 506,072	$ 573,658
Cost of sales	177,716	158,862	485,318	507,444
Gross profit	3,000	34,628	20,754	66,214
Gain (loss) on disposition of assets, net	15	440	(631)	913
Goodwill impairment				(6,689)
Selling, general and administrative expenses	(13,346)	(16,053)	(41,950)	(48,256)
Income (loss) from operations	(10,331)	19,015	(21,827)	12,182
Net interest expense	(5,928)	(7,598)	(17,900)	(20,407)
Gain (loss) on extinguishment of long-term debt	(124)	9,239	(124)	9,239
Other income (expense), net	(4,015)	8,824	(1,438)	(3,672)
Royalty income and other	297	197	2,603	2,493
Income (loss) before income taxes	(20,101)	29,677	(38,686)	(165)
Income tax provision (benefit)	(1,058)	5,232	(2,910)	(16,132)
Net income (loss)	(19,043)	24,445	(35,776)	15,967
Net loss attributable to redeemable noncontrolling interests		(54)	(146)	(2,044)
Net income (loss) attributable to common shareholders	$ (19,043)	$ 24,499	$ (35,630)	$ 18,011
Earnings (loss) per share of common stock:
Basic	$ (0.13)	$ 0.16	$ (0.24)	$ 0.10
Diluted	$ (0.13)	$ 0.16	$ (0.24)	$ 0.10
Weighted average common shares outstanding (in shares)
Basic	150,088	149,032	150,018	148,956
Diluted	150,088	149,951	150,018	149,824