Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net revenues	$ 212,575	$ 163,260	$ 581,462	$ 418,117
Cost of sales	160,582	142,119	473,589	379,434
Gross profit	51,993	21,141	107,873	38,683
Gain (loss) on disposition of assets, net	146	0	146	(39)
Selling, general and administrative expenses	(20,762)	(16,374)	(52,986)	(46,532)
Income (loss) from operations	31,377	4,767	55,033	(7,888)
Equity in losses of investment	(107)	(153)	(378)	(457)
Net interest expense	(3,249)	(3,615)	(10,744)	(15,480)
Loss on extinguishment of long-term debt	(2)	0	(1,183)	(397)
Other expense, net	(709)	(551)	(3,225)	(619)
Other income – oil and gas	652	303	4,068	3,196
Income (loss) before income taxes	27,962	751	43,571	(21,645)
Income tax provision (benefit)	841	(1,539)	1,226	(1,117)
Net income (loss)	$ 27,121	$ 2,290	$ 42,345	$ (20,528)
Earnings (loss) per share of common stock (in dollars per share)
Basic	$ 0.18	$ 0.02	$ 0.29	$ (0.14)
Diluted	$ 0.18	$ 0.02	$ 0.29	$ (0.14)
Weighted average common shares outstanding (in shares)
Basic	146,700	145,958	146,679	145,057
Diluted	146,964	145,958	146,761	145,057