COMMITMENTS AND CONTINGENCIES (Details) $ in Millions		12 Months Ended
Feb. 26, 2019 USD ($)	Dec. 31, 2021 USD ($) item contract
Purchase commitments related to equipment
2022		$ 4.8
Total		2.6
Drilling rig commitment		2.6
Early termination penalty		$ 0.6
Gathering, transportation and sales \| West Texas
Purchase commitments related to equipment
Number of long-term crude oil sales contracts to which the entity is committed \| item		2
Number of long-term natural gas sales contracts to which the entity is committed \| contract		12
Gathering, transportation and sales \| West Texas \| Minimum
Purchase commitments related to equipment
Period of commitment for production from the date of first production		1 year
Gathering, transportation and sales \| West Texas \| Maximum
Purchase commitments related to equipment
Period of commitment for production from the date of first production		20 years
Litigation Against Vodenichar
Purchase commitments related to equipment
Litigation Settlement, Amount Awarded to Other Party	$ 9.1

Represents the number of long-term crude oil sales contracts to which the entity is committed.

No definition available.

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Namespace Prefix:	batl_
Data Type:	xbrli:integerItemType
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- Definition

Represents the number of long-term natural gas sales contracts to which the entity is committed.

+ References

No definition available.

+ Details

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Namespace Prefix:	batl_
Data Type:	xbrli:integerItemType
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Period Type:	duration

- Definition

Represents the period of commitment for production from the date of first production.

+ References

No definition available.

+ Details

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- Definition

The amount of early termination fee in purchase commitment.

+ References

No definition available.

+ Details

Name:	batl_PurchaseCommitmentEarlyTerminationFee
Namespace Prefix:	batl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

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

- Definition

Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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