Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Segment Reporting [Abstract]
Reporting segments | segment	4
Segment Reporting Information [Line Items]
Revenues	$ 1,191,335	$ 765,439
Cost of revenues (excluding depreciation)	1,060,732	661,899
Operating expense (excluding depreciation)	73,674	51,010
Depreciation, depletion, and amortization	20,957	13,037
General and administrative expense (excluding depreciation)	11,665	11,205
Acquisition and integration costs	2,884	632
Operating income	21,423	27,656
Interest expense and financing costs, net	(18,710)	(8,377)
Debt extinguishment and commitment costs	(5,496)	0
Other income, net	87	119
Change in value of common stock warrants	(1,282)	745
Change in value of contingent consideration	0	(10,500)
Equity earnings from Laramie Energy, LLC	301	5,576
Income (loss) before income taxes	(3,677)	15,219
Income tax benefit (expense)	64,769	(34)
Net income	61,092	15,185
Capital expenditures	17,864	9,612
Refining
Segment Reporting Information [Line Items]
Revenues	1,146,064	740,263
Logistics
Segment Reporting Information [Line Items]
Revenues	45,209	33,067
Retail
Segment Reporting Information [Line Items]
Revenues	99,831	78,592
Operating Segments | Refining
Segment Reporting Information [Line Items]
Revenues	1,146,064	740,263
Cost of revenues (excluding depreciation)	1,062,568	668,479
Operating expense (excluding depreciation)	55,255	37,349
Depreciation, depletion, and amortization	13,878	8,362
General and administrative expense (excluding depreciation)	0	0
Acquisition and integration costs	0	0
Operating income	14,363	26,073
Capital expenditures	9,446	4,974
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Revenues	45,209	33,067
Cost of revenues (excluding depreciation)	26,530	20,810
Operating expense (excluding depreciation)	2,364	1,822
Depreciation, depletion, and amortization	3,896	1,642
General and administrative expense (excluding depreciation)	0	0
Acquisition and integration costs	0	0
Operating income	12,419	8,793
Capital expenditures	5,513	2,683
Operating Segments | Retail
Segment Reporting Information [Line Items]
Revenues	99,831	78,592
Cost of revenues (excluding depreciation)	71,338	59,147
Operating expense (excluding depreciation)	16,055	11,839
Depreciation, depletion, and amortization	2,374	1,868
General and administrative expense (excluding depreciation)	0	0
Acquisition and integration costs	0	0
Operating income	10,064	5,738
Capital expenditures	2,479	701
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Revenues	(99,769)	(86,483)
Cost of revenues (excluding depreciation)	(99,704)	(86,537)
Operating expense (excluding depreciation)	0	0
Depreciation, depletion, and amortization	809	1,165
General and administrative expense (excluding depreciation)	11,665	11,205
Acquisition and integration costs	2,884	632
Operating income	(15,423)	(12,948)
Capital expenditures	426	1,254
Gross profit	$ (99,800)	$ (85,900)