Commitments and Contingencies (Details)		3 Months Ended	6 Months Ended	11 Months Ended
	Mar. 23, 2015	Jun. 30, 2017 USD ($) claim	Jun. 30, 2017 USD ($) claim	Jun. 30, 2017 USD ($) claim	Jun. 17, 2013 USD ($)
Long-term Purchase Commitment [Line Items]
Multiplier for earnout payment before EBITDA		4	4	4
Minimum EBITDA benchmark		$ 3,500,000.0	$ 3,500,000.0	$ 3,500,000.0
Maximum earnout payment amount		4,500,000.0	4,500,000.0	4,500,000.0
Site contingency, recovery from third party of environmental remediation cost		1,200,000	4,700,000	11,000,000
Environmental costs recognized, capitalized in period		$ 900,000	$ 2,400,000	$ 12,000,000
Number of remaining claim to be resolved | claim		2	2	2
Bankruptcy claims amount of claims to be settled		$ 22,400,000	$ 22,400,000	$ 22,400,000
Estimated value of claims remaining to be settled		500,000	500,000	500,000
Maximum bankruptcy claims remaining		$ 22,400,000	$ 22,400,000	$ 22,400,000
Predecessor working ownership percentage		3.40%	3.40%	3.40%
Allowed claims, settlement ratio			0.0544
Indemnification Agreement | Tesoros
Long-term Purchase Commitment [Line Items]
Deductible for indemnification obligation		$ 1,000,000	$ 1,000,000	$ 1,000,000
Indemnification obligation cap		15,000,000	15,000,000	15,000,000
Clear Air Act Violation
Long-term Purchase Commitment [Line Items]
Final decree high estimate			30,000,000
Pending Litigation
Long-term Purchase Commitment [Line Items]
Claim amount for environmental losses (more than)		1,000,000	1,000,000	1,000,000
Wyoming Refinery One
Long-term Purchase Commitment [Line Items]
Environmental remediation expense		20,000,000	$ 20,000,000	20,000,000
Environmental costs recognized, period for recognition of one third costs			5 years
Environmental costs recognized, remainder, period for recognition			30 years
Wyoming Refinery Two | Wastewater Treatment Pond
Long-term Purchase Commitment [Line Items]
Environmental remediation expense		500,000	$ 500,000	500,000
Wyoming Refinery Two | Waste Water Treatment System
Long-term Purchase Commitment [Line Items]
Environmental remediation expense		11,600,000	11,600,000	11,600,000
Wyoming Refinery
Long-term Purchase Commitment [Line Items]
Loss contingency, range of possible loss		$ 100,000	$ 100,000	$ 100,000
United Steelworkers Union
Long-term Purchase Commitment [Line Items]
Collective bargaining arrangement, extension term	4 years
Tesoro
Long-term Purchase Commitment [Line Items]
Contingent consideration (up to)					$ 20,000,000