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Commitments and Contingencies Commitment and Contingencies - Narrative (Details) | 12 Months Ended
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Dec. 31, 2016 USD ($) claim
Long-term Purchase Commitment [Line Items] |
Minimum EBITDA benchmark for earnout | $ 3,500,000.0
Maximum earnout payment amount | 4,500,000.0
Site contingency reimbursement | 6,300,000
Site contingencies capital expenditures | $ 9,600,000
Bankruptcy claims number of claims to be settled | claim | 2
Bankruptcy claims amount of claims to be settled | $ 22,400,000
Settlement liabilities, current | 500,000
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 | 1,000,000
Wyoming Refinery One |
Long-term Purchase Commitment [Line Items] |
Environmental costs recognized, capitalized | $ 18,000,000
Environmental costs recognized, period for recognition of one third costs | 5 years
Environmental costs recognized, period for recognition | 30 years
Wyoming Refinery Two | Wastewater Treatment Pond |
Long-term Purchase Commitment [Line Items] |
Environmental costs recognized, capitalized | $ 500,000
Wyoming Refinery Two | Waste Water Treatment System |
Long-term Purchase Commitment [Line Items] |
Environmental costs recognized, capitalized | 11,600,000
Wyoming Refinery |
Long-term Purchase Commitment [Line Items] |
Loss contingency, range of possible loss, maximum | $ 100,000

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