Segment Information (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)
Segment Reporting [Abstract]
Reporting segments | segment					4
Segment Reporting Information [Line Items]
Revenues	$ 1,409,409		$ 856,396		$ 2,600,744	$ 1,621,835
Cost of revenues (excluding depreciation)	1,251,842		747,924		2,312,574	1,409,823
Operating expense (excluding depreciation)	74,830		53,060		148,504	104,070
Depreciation, depletion, and amortization	21,919		12,775		42,876	25,812
General and administrative expense (excluding depreciation)	11,379		12,905		23,044	24,110
Acquisition and integration costs	818		749		3,702	1,381
Operating income	48,621		28,983		70,044	56,639
Interest expense and financing costs, net	(20,278)		(10,544)		(38,988)	(18,921)
Debt extinguishment and commitment costs	(3,690)		0		(9,186)	0
Other income, net	2,177		657		2,264	776
Change in value of common stock warrants	(957)		(74)		(2,239)	671
Change in value of contingent consideration	0		0		0	(10,500)
Equity earnings (losses) from Laramie Energy, LLC	491		(2,352)		792	3,224
Income before income taxes	26,364		16,670		22,687	31,889
Income tax benefit (expense)	1,805		(492)		66,574	(526)
Net income	28,169	$ 61,092	16,178	$ 15,185	89,261	31,363
Capital expenditures	23,540		8,045		41,404	17,657
Refining
Segment Reporting Information [Line Items]
Revenues	1,347,557		800,408		2,493,621	1,540,671
Logistics
Segment Reporting Information [Line Items]
Revenues	50,146		31,289		95,355	64,356
Retail
Segment Reporting Information [Line Items]
Revenues	120,749		119,691		220,580	198,283
Operating Segments | Refining
Segment Reporting Information [Line Items]
Revenues	1,347,557		800,408		2,493,621	1,540,671
Cost of revenues (excluding depreciation)	1,244,366		731,104		2,306,934	1,399,583
Operating expense (excluding depreciation)	55,393		34,747		110,648	72,096
Depreciation, depletion, and amortization	14,613		7,475		28,491	15,837
General and administrative expense (excluding depreciation)	0		0		0	0
Acquisition and integration costs	0		0		0	0
Operating income	33,185		27,082		47,548	53,155
Capital expenditures	9,437		5,053		18,883	10,027
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Revenues	50,146		31,289		95,355	64,356
Cost of revenues (excluding depreciation)	26,758		18,581		53,288	39,391
Operating expense (excluding depreciation)	3,028		2,385		5,392	4,207
Depreciation, depletion, and amortization	3,989		1,673		7,885	3,315
General and administrative expense (excluding depreciation)	0		0		0	0
Acquisition and integration costs	0		0		0	0
Operating income	16,371		8,650		28,790	17,443
Capital expenditures	11,945		1,866		17,458	4,549
Operating Segments | Retail
Segment Reporting Information [Line Items]
Revenues	120,749		119,691		220,580	198,283
Cost of revenues (excluding depreciation)	89,782		93,213		161,120	152,360
Operating expense (excluding depreciation)	16,409		15,924		32,464	27,763
Depreciation, depletion, and amortization	2,532		2,697		4,906	4,565
General and administrative expense (excluding depreciation)	0		0		0	0
Acquisition and integration costs	0		0		0	0
Operating income	12,026		7,857		22,090	13,595
Capital expenditures	1,798		394		4,277	1,095
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Revenues	(109,043)		(94,992)		(208,812)	(181,475)
Cost of revenues (excluding depreciation)	(109,064)		(94,974)		(208,768)	(181,511)
Operating expense (excluding depreciation)	0		4		0	4
Depreciation, depletion, and amortization	785		930		1,594	2,095
General and administrative expense (excluding depreciation)	11,379		12,905		23,044	24,110
Acquisition and integration costs	818		749		3,702	1,381
Operating income	(12,961)		(14,606)		(28,384)	(27,554)
Capital expenditures	360		732		786	1,986
Gross profit	$ (109,000)		$ (95,000)		$ (208,800)	$ (180,900)