Consecutive Quarters, Margin Reduction Threshold

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- Definition

Customary letter of credit fee, including a fronting fee per annum on the stated amount of each outstanding letter of credit.

+ References

No definition available.

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- Definition

Expansion Feature

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- Definition

Incremental Uncommitted Expansion Feature

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No definition available.

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- Definition

Line of Credit Amendment Conditions Description

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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- Definition

Discussion of whether the borrowings under the credit facility are secured or unsecured and, if secured, a description of collateral (for example, accounts receivable less than 120 days old, finished goods inventory).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Long-Term Debt Long-Term Debt (Revolving Credit) (Details) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2019 USD ($)	Sep. 04, 2019 USD ($)	Dec. 31, 2018 USD ($)
Line of Credit Facility [Line Items]
Line of Credit Facility, Collateral		adding the fixed assets of the Company’s Great Falls, MT refinery
Line of Credit Amendment Conditions Description		Among other conditions precedent that were required to be satisfied before the Effective Date, the Company was required to consummate an offering of at least $450.0 million aggregate principal amount of senior unsecured notes.
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 600.0		$ 600.0
Incremental Uncommitted Expansion Feature		$ 500.0
Expansion Feature			$ 99.6
Debt Instrument, Basis Spread on Variable Rate		50.00%
Debt Instrument, Maturity Date		Feb. 28, 2023
Consecutive Quarters, Margin Reduction Threshold		5.5
Debt Instrument, Frequency of Periodic Payment		quarterly
Customary Letter of Credit Fee Including Fronting Fee Per Annum on Stated Amount Of Each Outstanding Letter Of Credit		0.125%
Line of Credit Facility, Current Borrowing Capacity		$ 401.9
Long-term Line of Credit		0.0		$ 0.0
Letters of Credit Outstanding, Amount		42.5
Line of Credit Facility, Remaining Borrowing Capacity		$ 359.4
Line of Credit Facility, Covenant Terms		greater of (i) 10.0% of the Borrowing Base (as defined in the Credit Agreement) then in effect, or 15% while the Great Falls, MT refinery is included in the borrowing base, and (ii) $35.0 million (which amount is subject to increase in proportion to revolving commitment increases), plus the amount of FILO loans outstanding, then the Company will be required to maintain as of the end of each fiscal quarter a Fixed Charge Coverage Ratio (as defined in the Credit Agreement) of at least 1.0 to 1.0
FILO Revolver
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 25.0
Maximum \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate	25.00%	25.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.375%
Minimum \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		25.00%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.25%
Prime Rate \| Revolving Credit Facility \| Quarterly Average Availability Percentage, greater than or equal to 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Prime Rate \| Revolving Credit Facility \| Quarterly Average Availability Percentage, greater than or equal to 33% and less than 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.75%
Prime Rate \| Revolving Credit Facility \| Quarterly Average Availabiity Percentage, less than 33%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.00%
Prime Rate \| FILO Revolver
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		150.00%
Prime Rate \| FILO Revolver \| Quarterly Average Availability Percentage, greater than or equal to 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
Prime Rate \| FILO Revolver \| Quarterly Average Availability Percentage, greater than or equal to 33% and less than 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.75%
Prime Rate \| FILO Revolver \| Quarterly Average Availabiity Percentage, less than 33%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.00%
London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		150.00%
London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| Quarterly Average Availability Percentage, greater than or equal to 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| Quarterly Average Availability Percentage, greater than or equal to 33% and less than 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.75%
London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility \| Quarterly Average Availabiity Percentage, less than 33%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.00%
London Interbank Offered Rate (LIBOR) \| FILO Revolver
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		250.00%
London Interbank Offered Rate (LIBOR) \| FILO Revolver \| Quarterly Average Availability Percentage, greater than or equal to 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.50%
London Interbank Offered Rate (LIBOR) \| FILO Revolver \| Quarterly Average Availability Percentage, greater than or equal to 33% and less than 66%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.75%
London Interbank Offered Rate (LIBOR) \| FILO Revolver \| Quarterly Average Availabiity Percentage, less than 33%
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		3.00%