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Commitments and Contingencies (Details)
 3 Months Ended 12 Months Ended 20 Months Ended
Mar. 22, 2018
USD ($)
Mar. 23, 2015
Mar. 31, 2018
USD ($)
claim
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Mar. 31, 2018
USD ($)
claim
Jun. 17, 2013
USD ($)
Long-term Purchase Commitment [Line Items]              
Loss contingency, damages sought     $ 4,500,000        
Multiplier for earnout payment before EBITDA     4     4  
Minimum EBITDA benchmark     $ 3,500,000.0     $ 3,500,000.0  
Maximum earnout payment amount     4,500,000.0     4,500,000.0  
RINs benefit     13,200,000        
Site contingency, recovery from third party of environmental remediation cost           12,200,000  
Environmental costs recognized, capitalized in period           $ 12,900,000  
Environmental costs expected to be recognized     $ 1,000,000        
Number of remaining claim to be resolved | claim     2     2  
Bankruptcy claims amount of claims to be settled     $ 22,400,000     $ 22,400,000  
Estimated value of claims remaining to be settled     500,000     500,000  
Maximum bankruptcy claims remaining     $ 22,400,000     $ 22,400,000  
Predecessor working ownership percentage     3.40%     3.40%  
Allowed claims, settlement ratio     0.0544        
Tesoro Corporation              
Long-term Purchase Commitment [Line Items]              
Contingent consideration (up to)             $ 20,000,000
Loss contingency, damages paid $ 10,500,000     $ 16,800,000      
Loss contingency, damages sought       $ 8,300,000 $ 4,300,000    
Indemnification Agreement | Tesoro Corporation              
Long-term Purchase Commitment [Line Items]              
Deductible for indemnification obligation     $ 1,000,000     $ 1,000,000  
Indemnification obligation cap     15,000,000     15,000,000  
Pending Litigation              
Long-term Purchase Commitment [Line Items]              
Claim amount for environmental losses (more than)     1,000,000     1,000,000  
Wyoming Refinery One              
Long-term Purchase Commitment [Line Items]              
Environmental remediation expense     $ 17,800,000     17,800,000  
Environmental costs recognized, period for recognition of one third costs     5 years        
Environmental costs recognized, remainder, period for recognition     30 years        
Wyoming Refinery Two | Waste Water Treatment System              
Long-term Purchase Commitment [Line Items]              
Environmental remediation expense     $ 11,600,000     11,600,000  
Wyoming Refinery              
Long-term Purchase Commitment [Line Items]              
Loss contingency, range of possible loss     $ 100,000     $ 100,000  
United Steelworkers Union              
Long-term Purchase Commitment [Line Items]              
Collective bargaining arrangement, extension term   4 years          
Maximum [Member] | Tesoro Corporation              
Long-term Purchase Commitment [Line Items]              
Contingent consideration (up to)             $ 40,000,000