Represents the acres of tracts in which the Company has the ability to acquire interest.

No definition available.

Name:	bry_ContractualObligationAcreOfTracts
Namespace Prefix:	bry_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the amount of penalty, for each well, that is not required to be paid as a result of amendment to certain contractual obligations.

+ References

No definition available.

+ Details

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

- Definition

Represents the expenditure that is required to be made by the entity related to a construction obligation.

+ References

No definition available.

+ Details

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

- Definition

Represents the penalty as a percentage of difference between the specified amount and the actual amount expended.

+ References

No definition available.

+ Details

Name:	bry_ContractualObligationPenaltyAsPercentageOfDifferenceBetweenSpecifiedAmountAndActualExpended
Namespace Prefix:	bry_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the specified amount for penalty calculation in connection with construction obligation.

+ References

No definition available.

+ Details

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

- Definition

The book value of the gathering system for natural gas transportation.

+ References

No definition available.

+ Details

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

- Definition

Represents the third party's share of the construction costs, on a percentage basis.

+ References

No definition available.

+ Details

Name:	bry_ThirdPartyShareOfConstructionCostsPercentage
Namespace Prefix:	bry_
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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

+ Details

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_PerformanceGuaranteeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Commitments and Contingencies (Details) $ in Thousands	6 Months Ended
Commitments and Contingencies (Details) $ in Thousands	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jan. 14, 2011 USD ($) a
Loss Contingencies [Line Items]
Gathering System, Book Value	$ 12,000
Payments for Legal Settlements	$ 0	$ 0
Performance Guarantee [Member]
Loss Contingencies [Line Items]
Contractual Obligation Amount, Penalty Waived Per Well			$ 200
Contractual Obligation, Acre Of Tracts \| a			160
Contractual Obligation, Contingent Construction Expense			$ 9,000
Third Party Share of Construction Costs, Percentage			50.00%
Contractual Obligation, Penalty as Percentage of Difference Between Specified Amount and Actual Expended			50.00%
Contractual Obligation, Specified Amount for Penalty Calculation			$ 12,000