Condensed Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net revenues	$ 164,262	$ 104,528
Cost of sales	151,279	105,353
Gross profit (loss)	12,983	(825)
Loss on disposition of assets, net	0	(39)
Selling, general and administrative expenses	(14,099)	(16,841)
Loss from operations	(1,116)	(17,705)
Equity in losses of investment	(136)	(152)
Net interest expense	(3,896)	(5,226)
Loss on extinguishment of long-term debt	(1,105)	0
Other income (expense), net	925	(535)
Other income – oil and gas	2,855	2,602
Loss before income taxes	(2,473)	(21,016)
Income tax provision (benefit)	87	(4,601)
Net loss	$ (2,560)	$ (16,415)
Loss per share of common stock (in dollars per share)
Basic	$ (0.02)	$ (0.11)
Diluted	$ (0.02)	$ (0.11)
Weighted average common shares outstanding (in shares)
Basic	146,653	143,244
Diluted	146,653	143,244