Debt (Notes)	3 Months Ended
Mar. 31, 2017
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	9. Debt Revolving Credit Facility In connection with the St. Paul Park Logistics Transaction, on September 15, 2016, we entered into a Commitment Increase and First Amendment to Credit Agreement (the “Amendment”) to our senior secured revolving credit facility (the "Revolving Credit Facility") to bring the total commitment to $500.0 million. The Revolving Credit Facility will mature on October 16, 2018. We have the ability to increase the total commitment of our Revolving Credit Facility by up to $150.0 million for a total facility size of up to $650.0 million, subject to receiving increased commitments from lenders and to the satisfaction of certain conditions. The Revolving Credit Facility includes a $25.0 million sub-limit for standby letters of credit and a $10.0 million sub-limit for swing line loans. Obligations under the Revolving Credit Facility and certain cash management and hedging obligations are guaranteed by all of our subsidiaries and are secured by a first priority lien on substantially all of our and our subsidiaries' significant assets. Our creditors under the Revolving Credit Facility have no recourse to Western's assets. Borrowings under our Revolving Credit Facility bear interest at either a base rate plus an applicable margin ranging from 0.75% to 1.75%, or at LIBOR plus an applicable margin ranging from 1.75% to 2.75%. The applicable margin will vary based on our Consolidated Total Leverage Ratio, as defined in the Revolving Credit Facility. Pursuant to the Amendment, certain existing lenders and new lenders agreed to provide incremental commitments in an aggregate principal amount of $200.0 million. In addition, the Amendment amended the Revolving Credit Facility by, among other things, (a) adding an anti-cash hoarding provision and (b) permitting the Partnership to increase the total leverage ratio permitted thereunder from 4.50:1.00 to 5.00:1.00 following any material permitted acquisition through the last day of the second full fiscal quarter following such acquisition. The incremental commitments established by the Amendment benefit from the same covenants, events of default, guarantees and security as the existing commitments under the Revolving Credit Facility. We incurred financing costs associated with the Amendment of $1.2 million. On October 30, 2015, we borrowed $145.0 million under the Revolving Credit Facility to partially fund the purchase of the TexNew Mex Pipeline system from Western. During the year ended December 31, 2016, we repaid these direct borrowings using the net proceeds generated from our equity offering during the second quarter of 2016 and from cash-on-hand. On September 15, 2016, we borrowed $20.3 million under the Revolving Credit Facility, to partially fund the St. Paul Park Logistics Transaction. As of March 31, 2017, the availability under the Revolving Credit Facility was $479.0 million. This availability is net of $20.3 million in direct borrowings and $0.7 million in outstanding letters of credit. We had no swing line borrowings outstanding under our Revolving Credit Facility as of March 31, 2017. The estimated fair value of the Revolving Credit Facility approximates its carrying amount. The interest rate for the borrowings under the Revolving Credit Facility was 4.75% as of March 31, 2017. The unamortized financings costs of $1.8 million and $2.0 million as of March 31, 2017 and December 31, 2016, respectively, are included in long-term debt in the Condensed Consolidated Balance Sheets. The effective rate of interest, including contractual interest and amortization of loan fees, on the Revolving Credit Facility was 3.75% as of March 31, 2017. The Revolving Credit Facility contains covenants that limit or restrict our ability to make cash distributions. We are required to maintain certain financial ratios; each tested on a quarterly basis for the immediately preceding four quarter period. 7.5% Senior Notes On February 11, 2015, we entered into an Indenture (the “Indenture”) among the Partnership, WNRL Finance Corp., a Delaware corporation and 100% owned subsidiary of the Partnership (“Finance Corp.” and together with the Partnership, the “Issuers”), the Guarantors named therein and U.S. Bank National Association, as trustee (the “Trustee”) under which the Issuers issued $300.0 million in aggregate principal amount of 7.5% Senior Notes due 2023 (the "WNRL 2023 Senior Notes"). The Partnership will pay interest on the WNRL 2023 Senior Notes semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2015. The WNRL 2023 Senior Notes will mature on February 15, 2023. The estimated fair value of the WNRL 2023 Senior Notes was $325.5 million as of March 31, 2017. We incurred financing costs associated with the issuance of the WNRL 2023 Senior Notes of $6.8 million. Unamortized financings costs of $5.0 million and $5.2 million as of March 31, 2017 and December 31, 2016, respectively, are included in long-term debt in the Condensed Consolidated Balance Sheets. The effective rate of interest, including contractual interest and amortization of loan fees, on the 7.5% Senior Notes was 7.78% as of March 31, 2017. The WNRL 2023 Senior Notes are fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis by all of WNRL's current 100% owned subsidiaries, with the exception of Finance Corp. Finance Corp. is a minor subsidiary of WNRL and is a co-issuer of the WNRL 2023 Senior Notes. The co-issuance between WNRL and Finance Corp. is on a joint and several basis. WNRL has no independent assets or operations. There are no significant restrictions on the ability of WNRL or its subsidiary guarantors and Finance Corp. to obtain or transfer funds from its subsidiary guarantors by dividend or loan. None of the subsidiary guarantors’ or Finance Corp.'s assets represent restricted assets. The subsidiary guarantees of the WNRL 2023 Senior Notes are subject to certain automatic customary releases, including upon the sale, disposition or transfer of capital stock or all or substantially all of the assets (including by way of merger or consolidation) of a subsidiary guarantor to a person other than the Partnership or one of its restricted subsidiaries, designation of a subsidiary guarantor as an unrestricted subsidiary in accordance with the Indenture, a legal defeasance or covenant defeasance, liquidation or dissolution of the subsidiary guarantor and a subsidiary guarantor ceasing to guarantee debt of the Partnership, Finance Corp. or any other guarantor under a credit facility other than the WNRL 2023 Senior Notes. The Partnership’s subsidiaries may not sell or otherwise dispose of all or substantially all of their properties or assets to, or consolidate with or merge into, another company if such a sale would cause a default under the Indenture. The Indenture contains covenants that limit WNRL’s and its restricted subsidiaries’ ability to, among other things: (i) incur, assume or guarantee additional indebtedness or issue preferred units, (ii) create liens to secure indebtedness, (iii) pay distributions on equity securities, repurchase equity securities or redeem subordinated indebtedness, (iv) make investments, (v) effect distributions, loans or other asset transfers from the Partnership’s restricted subsidiaries, (vi) consolidate with or merge with or into, or sell substantially all of the Partnership’s properties to, another person, (vii) sell or otherwise dispose of assets, including equity interests in subsidiaries and (viii) enter into transactions with affiliates. These covenants are subject to a number of limitations and exceptions. The Indenture would permit or require the principal, premium, if any, and interest on all the then outstanding WNRL 2023 Senior Notes to be due and payable immediately in the event of default.

9. Debt

Revolving Credit Facility

In connection with the St. Paul Park Logistics Transaction, on September 15, 2016, we entered into a Commitment Increase and First Amendment to Credit Agreement (the “Amendment”) to our senior secured revolving credit facility (the "Revolving Credit Facility") to bring the total commitment to $500.0 million. The Revolving Credit Facility will mature on October 16, 2018. We have the ability to increase the total commitment of our Revolving Credit Facility by up to $150.0 million for a total facility size of up to $650.0 million, subject to receiving increased commitments from lenders and to the satisfaction of certain conditions. The Revolving Credit Facility includes a $25.0 million sub-limit for standby letters of credit and a $10.0 million sub-limit for swing line loans. Obligations under the Revolving Credit Facility and certain cash management and hedging obligations are guaranteed by all of our subsidiaries and are secured by a first priority lien on substantially all of our and our subsidiaries' significant assets. Our creditors under the Revolving Credit Facility have no recourse to Western's assets. Borrowings under our Revolving Credit Facility bear interest at either a base rate plus an applicable margin ranging from 0.75% to 1.75%, or at LIBOR plus an applicable margin ranging from 1.75% to 2.75%. The applicable margin will vary based on our Consolidated Total Leverage Ratio, as defined in the Revolving Credit Facility.

Pursuant to the Amendment, certain existing lenders and new lenders agreed to provide incremental commitments in an aggregate principal amount of $200.0 million. In addition, the Amendment amended the Revolving Credit Facility by, among other things, (a) adding an anti-cash hoarding provision and (b) permitting the Partnership to increase the total leverage ratio permitted thereunder from 4.50:1.00 to 5.00:1.00 following any material permitted acquisition through the last day of the second full fiscal quarter following such acquisition. The incremental commitments established by the Amendment benefit from the same covenants, events of default, guarantees and security as the existing commitments under the Revolving Credit Facility. We incurred financing costs associated with the Amendment of $1.2 million.

On October 30, 2015, we borrowed $145.0 million under the Revolving Credit Facility to partially fund the purchase of the TexNew Mex Pipeline system from Western. During the year ended December 31, 2016, we repaid these direct borrowings using the net proceeds generated from our equity offering during the second quarter of 2016 and from cash-on-hand. On September 15, 2016, we borrowed $20.3 million under the Revolving Credit Facility, to partially fund the St. Paul Park Logistics Transaction.

As of March 31, 2017, the availability under the Revolving Credit Facility was $479.0 million. This availability is net of $20.3 million in direct borrowings and $0.7 million in outstanding letters of credit. We had no swing line borrowings outstanding under our Revolving Credit Facility as of March 31, 2017. The estimated fair value of the Revolving Credit Facility approximates its carrying amount. The interest rate for the borrowings under the Revolving Credit Facility was 4.75% as of March 31, 2017. The unamortized financings costs of $1.8 million and $2.0 million as of March 31, 2017 and December 31, 2016, respectively, are included in long-term debt in the Condensed Consolidated Balance Sheets. The effective rate of interest, including contractual interest and amortization of loan fees, on the Revolving Credit Facility was 3.75% as of March 31, 2017.

The Revolving Credit Facility contains covenants that limit or restrict our ability to make cash distributions. We are required to maintain certain financial ratios; each tested on a quarterly basis for the immediately preceding four quarter period.

7.5% Senior Notes

On February 11, 2015, we entered into an Indenture (the “Indenture”) among the Partnership, WNRL Finance Corp., a Delaware corporation and 100% owned subsidiary of the Partnership (“Finance Corp.” and together with the Partnership, the “Issuers”), the Guarantors named therein and U.S. Bank National Association, as trustee (the “Trustee”) under which the Issuers issued $300.0 million in aggregate principal amount of 7.5% Senior Notes due 2023 (the "WNRL 2023 Senior Notes"). The Partnership will pay interest on the WNRL 2023 Senior Notes semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2015. The WNRL 2023 Senior Notes will mature on February 15, 2023. The estimated fair value of the WNRL 2023 Senior Notes was $325.5 million as of March 31, 2017. We incurred financing costs associated with the issuance of the WNRL 2023 Senior Notes of $6.8 million.

Unamortized financings costs of $5.0 million and $5.2 million as of March 31, 2017 and December 31, 2016, respectively, are included in long-term debt in the Condensed Consolidated Balance Sheets. The effective rate of interest, including contractual interest and amortization of loan fees, on the 7.5% Senior Notes was 7.78% as of March 31, 2017.

The WNRL 2023 Senior Notes are fully and unconditionally and jointly and severally guaranteed on a senior unsecured basis by all of WNRL's current 100% owned subsidiaries, with the exception of Finance Corp. Finance Corp. is a minor subsidiary of WNRL and is a co-issuer of the WNRL 2023 Senior Notes. The co-issuance between WNRL and Finance Corp. is on a joint and several basis. WNRL has no independent assets or operations. There are no significant restrictions on the ability of WNRL or its subsidiary guarantors and Finance Corp. to obtain or transfer funds from its subsidiary guarantors by dividend or loan. None of the subsidiary guarantors’ or Finance Corp.'s assets represent restricted assets.

The subsidiary guarantees of the WNRL 2023 Senior Notes are subject to certain automatic customary releases, including upon the sale, disposition or transfer of capital stock or all or substantially all of the assets (including by way of merger or consolidation) of a subsidiary guarantor to a person other than the Partnership or one of its restricted subsidiaries, designation of a subsidiary guarantor as an unrestricted subsidiary in accordance with the Indenture, a legal defeasance or covenant defeasance, liquidation or dissolution of the subsidiary guarantor and a subsidiary guarantor ceasing to guarantee debt of the Partnership, Finance Corp. or any other guarantor under a credit facility other than the WNRL 2023 Senior Notes. The Partnership’s subsidiaries may not sell or otherwise dispose of all or substantially all of their properties or assets to, or consolidate with or merge into, another company if such a sale would cause a default under the Indenture.

The Indenture contains covenants that limit WNRL’s and its restricted subsidiaries’ ability to, among other things: (i) incur, assume or guarantee additional indebtedness or issue preferred units, (ii) create liens to secure indebtedness, (iii) pay distributions on equity securities, repurchase equity securities or redeem subordinated indebtedness, (iv) make investments, (v) effect distributions, loans or other asset transfers from the Partnership’s restricted subsidiaries, (vi) consolidate with or merge with or into, or sell substantially all of the Partnership’s properties to, another person, (vii) sell or otherwise dispose of assets, including equity interests in subsidiaries and (viii) enter into transactions with affiliates. These covenants are subject to a number of limitations and exceptions. The Indenture would permit or require the principal, premium, if any, and interest on all the then outstanding WNRL 2023 Senior Notes to be due and payable immediately in the event of default.