Subsequent Events	12 Months Ended
Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Note 21—Subsequent Events On January 9, 2018, we entered into an Asset Purchase Agreement with CHS, Inc. to acquire twenty one (21) owned retail gasoline, convenience store facilities and twelve (12) leased retail gasoline, convenience store facilities, all at various locations in Washington and Idaho for cash consideration of approximately $70 million plus the agreed value of inventory at closing (the "CHS Acquisition"). The closing of the CHS Acquisition is subject to certain customary closing conditions and is expected to close in the first quarter of 2018. As part of the CHS Acquisition, Par and CHS Inc. will enter into a multi-year branded petroleum marketing agreement for the continued supply of Cenex-branded refined products to the acquired convenience stores. In addition, the parties also will enter into a multi-year supply agreement pursuant to which Par will supply refined products to CHS Inc. within the Rocky Mountain and Pacific Northwest markets. On February 27, 2018, the Bankruptcy Court entered its final decree closing the Chapter 11 bankruptcy cases of Delta and the other Debtors, discharging the Recovery Trustee, and finding that all assets of the General Trust were resolved, abandoned, or liquidated and have been distributed in accordance with the requirements of the Plan. In addition, the final decree required the Company or the General Trust, as applicable, to maintain the current reserves owed on account of the remaining claims of the U.S. Government and Noble Energy, Inc. On February 28, 2018, Laramie Energy closed on a purchase and contribution agreement with an unaffiliated third party that contributed all of its oil and gas properties located in the Piceance Basin and a $23.5 million cash payment, collectively with a fair market value of $28.1 million, into Laramie Energy in exchange for 70,227 of Laramie Energy's newly issued Class A Units. As a result of this transaction, our ownership interest in Laramie Energy decreased from 42.3% to 39.14%.

Note 21—Subsequent Events

On January 9, 2018, we entered into an Asset Purchase Agreement with CHS, Inc. to acquire twenty one (21) owned retail gasoline, convenience store facilities and twelve (12) leased retail gasoline, convenience store facilities, all at various locations in Washington and Idaho for cash consideration of approximately $70 million plus the agreed value of inventory at closing (the "CHS Acquisition"). The closing of the CHS Acquisition is subject to certain customary closing conditions and is expected to close in the first quarter of 2018. As part of the CHS Acquisition, Par and CHS Inc. will enter into a multi-year branded petroleum marketing agreement for the continued supply of Cenex-branded refined products to the acquired convenience stores. In addition, the parties also will enter into a multi-year supply agreement pursuant to which Par will supply refined products to CHS Inc. within the Rocky Mountain and Pacific Northwest markets.

On February 27, 2018, the Bankruptcy Court entered its final decree closing the Chapter 11 bankruptcy cases of Delta and the other Debtors, discharging the Recovery Trustee, and finding that all assets of the General Trust were resolved, abandoned, or liquidated and have been distributed in accordance with the requirements of the Plan. In addition, the final decree required the Company or the General Trust, as applicable, to maintain the current reserves owed on account of the remaining claims of the U.S. Government and Noble Energy, Inc.

On February 28, 2018, Laramie Energy closed on a purchase and contribution agreement with an unaffiliated third party that contributed all of its oil and gas properties located in the Piceance Basin and a $23.5 million cash payment, collectively with a fair market value of $28.1 million, into Laramie Energy in exchange for 70,227 of Laramie Energy's newly issued Class A Units. As a result of this transaction, our ownership interest in Laramie Energy decreased from 42.3% to 39.14%.