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Commitments and Contingencies Additional Information (Detail)
 6 Months Ended 9 Months Ended
Jun. 30, 2016
Sep. 30, 2016
USD ($)
claim
Long-term Purchase Commitment [Line Items]    
Multiplier for earnout payment before EBITDA   4
Minimum EBITDA benchmark   $ 3,500,000.0
Maximum earnout payment amount   4,500,000.0
Site contingency reimbursement   4,700,000
Site contingencies capital expenditures   $ 7,100,000
Number of remaining claim to be resolved | claim   2
Bankruptcy claims amount of claims to be settled   $ 22,400,000
Estimated value of claims remaining to be settled   600,000
Maximum bankruptcy claims remaining   $ 22,400,000
Predecessor working ownership percentage   3.40%
Allowed claims, settlement ratio 0.0544  
Tesoros    
Long-term Purchase Commitment [Line Items]    
Deductible for indemnification obligation   $ 1,000,000
Indemnification obligation cap   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
Wyoming Refinery One    
Long-term Purchase Commitment [Line Items]    
Environmental remediation expense   $ 20,000,000
Environmental costs recognized, period for recognition of one third costs   5 years
Environmental costs recognized, period for recognition   30 years
Wyoming Refinery Two [Member] | Wastewater Treatment Pond    
Long-term Purchase Commitment [Line Items]    
Environmental remediation expense   $ 2,100,000
Wyoming Refinery Two [Member] | Waste Water Treatment System    
Long-term Purchase Commitment [Line Items]    
Environmental remediation expense   11,600,000
Wyoming Refinery [Member]    
Long-term Purchase Commitment [Line Items]    
Loss contingency, range of possible loss, maximum   $ 100,000