Acquisitions - Washington Acquisition (Details) mbpd in Thousands, barrel / d in Thousands, shares in Millions, bbl in Millions		1 Months Ended		9 Months Ended	12 Months Ended
	Jan. 11, 2019 USD ($) mbpd shares bbl	Jan. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) barrel / d	Dec. 31, 2019 USD ($) barrel / d	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 09, 2019 USD ($)
Business Acquisition [Line Items]
Oil and gas refinery | barrel / d				200	200
Issuance of common stock in connection with acquisition	$ 37,000,000.0				$ 36,980,000	$ 19,318,000
Acquisition and integration costs					4,704,000	10,319,000	$ 395,000
Income tax benefit (expense)					(69,689,000)	333,000	$ (1,319,000)
Washington Refinery Acquisition
Business Acquisition [Line Items]
Oil and gas refinery | mbpd	42
Oil and gas storage capacity | bbl	2.9
Consideration transferred	$ 326,500,000
Payments to acquire businesses	$ 289,500,000
Issuance of common stock in connection with acquisition (in shares) | shares	2.4
Acquisition and integration costs		$ 5,400,000	$ 4,200,000		2,200,000	$ 2,600,000
Total assets to our refining and logistics segments	$ 672,412,000
Increase in the property, plant, and equipment valuation				$ 2,100,000
Decrease in the deferred tax liability				(3,700,000)
Net decrease in working capital adjustments				(1,800,000)
Adjustment to goodwill				$ (4,000,000.0)
Revenue					1,200,000,000
Earnings (loss) of acquiree since acquisition date, actual					65,800,000
Income tax benefit (expense)					$ (64,200,000)
Term Loan | Term Loan B Facility
Business Acquisition [Line Items]
Debt instrument, face amount	250,000,000.0
Term Loan | Par Pacific Term Loan
Business Acquisition [Line Items]
Debt instrument, face amount								$ 45,000,000.0
Refining | Washington Refinery Acquisition
Business Acquisition [Line Items]
Total assets to our refining and logistics segments	403,900,000
Logistics | Washington Refinery Acquisition
Business Acquisition [Line Items]
Total assets to our refining and logistics segments	$ 268,500,000