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OIL AND NATURAL GAS PROPERTIES (Details)	3 Months Ended
	Mar. 31, 2022 $ / MMBTU $ / bbl	Mar. 31, 2021 $ / MMBTU $ / bbl
Ceiling Limitation Disclosures
First-day-of-month 12-month average price for natural gas (in $/MMBtu) | $ / MMBTU	4.09	2.16
First-day-of-month 12-month average price for crude oil used in ceiling test impairment (in dollars per barrel) | $ / bbl	75.28	39.95

X

- Definition

Represents the first-day-of-month 12-month average price per barrel of crude oil used in ceiling test impairment.

+ References

No definition available.

+ Details

Name:	batl_CrudeOilAveragePrice
Namespace Prefix:	batl_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

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- Definition

The natural gas price per million MMBtu.

+ References

No definition available.

+ Details

Name:	batl_NaturalGasPrice
Namespace Prefix:	batl_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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