CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenues	$ 1,204,083	$ 1,191,335
Operating expenses
Cost of revenues (excluding depreciation)	1,210,211	1,060,732
Operating expense (excluding depreciation)	73,391	73,674
Depreciation, depletion, and amortization	21,283	20,957
Impairment expense	67,922	0
General and administrative expense (excluding depreciation)	11,784	11,665
Acquisition and integration costs	665	2,884
Total operating expenses	1,385,256	1,169,912
Operating income (loss)	(181,173)	21,423
Other income (expense)
Interest expense and financing costs, net	(18,674)	(18,710)
Debt extinguishment and commitment costs	0	(5,496)
Other income, net	24	87
Change in value of common stock warrants	4,270	(1,282)
Equity earnings (losses) from Laramie Energy, LLC	(45,031)	301
Total other income (expense), net	(59,411)	(25,100)
Loss before income taxes	(240,584)	(3,677)
Income tax benefit	18,247	64,769
Net income (loss)	$ (222,337)	$ 61,092
Income (loss) per share
Basic (in dollars per share)	$ (4.18)	$ 1.23
Diluted (in dollars per share)	$ (4.18)	$ 1.14
Weighted-average number of shares outstanding
Basic (in shares)	53,153	49,127
Diluted (in shares)	53,153	55,550