Bond Repurchase Program, Authorized Amount

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Covenant, Distributions To Parent Company, Maximum Pro Forma Leverage Ratio Allowable

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument, Covenant, Distributions To Parent Company, Minimum Remaining Borrowing Capacity Required, Percentage

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument, Covenant, Maximum Leverage Ratio

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant, Minimum Current Ratio

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Covenant, Reduction In Borrowing Base If Unsecured Debt Is Incurred, Percentage

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Line Of Credit Facility, Borrowing Capacity, New Maximum Eligible To Be Elected

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Covenant Terms, Debt Repayment, Cash Reported Exceeding Threshold, Triggering Event

+ References

No definition available.

+ Details

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Namespace Prefix:	bry_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line Of Credit Facility, Current Maximum Borrowing Capacity

+ References

No definition available.

+ Details

Name:	bry_LineOfCreditFacilityCurrentMaximumBorrowingCapacity
Namespace Prefix:	bry_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Ratio Of Current Assets To Current Liabilities

+ References

No definition available.

+ Details

Name:	bry_RatioOfCurrentAssetsToCurrentLiabilities
Namespace Prefix:	bry_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section S45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68176171&loc=SL68176184-208336

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Name:	us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

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))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Name Accounting Standards Codification
-Topic 944
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
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Balance Type:
Period Type:

- Details

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- Details

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Debt - Narrative (Details)	3 Months Ended		6 Months Ended
Debt - Narrative (Details)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Feb. 27, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jul. 31, 2017 USD ($)
Debt Instrument [Line Items]
Debt issuance costs for the 2026 Senior Unsecured Notes	$ 7,038,000		$ 7,038,000			$ 7,531,000
Amortization of debt issuance costs			2,681,000	$ 2,517,000
Bond repurchase program, authorized amount					$ 75,000,000
Interest Expense
Debt Instrument [Line Items]
Amortization of debt issuance costs	1,000,000	$ 1,000,000	3,000,000	$ 3,000,000
RBL Facility \| Line of credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt issuance costs for the RBL Facility	9,000,000		9,000,000			11,000,000
Maximum borrowing capacity							$ 1,500,000,000
Borrowing base	200,000,000		200,000,000			500,000,000
Elected commitment feature to borrowing base	200,000,000		200,000,000			400,000,000
Maximum borrowing availability	150,000,000		150,000,000
Repayment of loans outstanding for amounts exceeding cash reported	$ 30,000,000		$ 30,000,000
Leverage ratio (no more than)							4.0
Current ratio (at least)							1.0
Leverage ratio at period end	1.4		1.4
Current ratio at period end	2.3		2.3
Reduction in borrowing base if unsecured indebtedness is incurred							25.00%
Borrowings outstanding	$ 1,000,000		$ 1,000,000
Available borrowing capacity	$ 142,000,000		$ 142,000,000
Minimum availability of borrowing base required which will permit distributions to parent company	20.00%		20.00%
Maximum pro forma leverage ratio allowable which will permit distributions to parent company	2.5		2.5
RBL Facility \| Line of credit \| Letter of credit
Debt Instrument [Line Items]
Letters of credit outstanding	$ 7,000,000		$ 7,000,000
2026 Notes \| Unsecured Debt
Debt Instrument [Line Items]
Fair value of debt	$ 320,000,000		$ 320,000,000			$ 376,000,000