Stockholders' Equity - Registration Rights Agreement (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Jun. 30, 2016
Debt Instrument [Line Items]
Maximum amount of repurchase rights agreement	$ 50
Effectiveness penalty percentage	0.25%
Purchase price allocation percentage	0.75%
5.00% Convertible Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument, interest rate	5.00%	5.00%
5.00% Convertible Senior Notes due 2021 \| Convertible Debt
Debt Instrument [Line Items]
Interest rate on the 90th day following registration statement	0.25%
Interest rate on the 91st day following the registration statement	0.50%
Registration statement liquidation damages limit	0.50%
Debt instrument, interest rate	5.00%	5.00%

Interest Rate on the 90th Day Following Registration Statement

No definition available.

Name:	parr_InterestRateonthe90thDayFollowingRegistrationStatement
Namespace Prefix:	parr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest Rate on the 91st Day Following the Registration Statement

+ References

No definition available.

+ Details

Name:	parr_InterestRateonthe91stDayFollowingtheRegistrationStatement
Namespace Prefix:	parr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the maximum amount of repurchase rights agreement.

+ References

No definition available.

+ Details

Name:	parr_MaximumAmountOfRepurchaseRightsAgreement
Namespace Prefix:	parr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Registration Statement Effectiveness Penalty Percentage

+ References

No definition available.

+ Details

Name:	parr_RegistrationStatementEffectivenessPenaltyPercentage
Namespace Prefix:	parr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Registration Statement Effectiveness Purchase Price Allocation Percentage

+ References

No definition available.

+ Details

Name:	parr_RegistrationStatementEffectivenessPurchasePriceAllocationPercentage
Namespace Prefix:	parr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Registration Statement Liquidation Damages Limit

+ References

No definition available.

+ Details

Name:	parr_RegistrationStatementLiquidationDamagesLimit
Namespace Prefix:	parr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=parr_A5ConvertibleSeniorNotesdue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: