Cumulative percentage of warrants to new common shares issued under the plan.

No definition available.

Name:	batl_CumulativePercentOfWarrantsToNewCommonSharesIssued
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash payment on termination of backstop unsecured senior creditors as a percentage to senior creditors rights offering.

+ References

No definition available.

+ Details

Name:	batl_PercentageOfCashPaymentOnTerminationOfBackstopUnsecuredSeniorCreditors
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Consideration to unsecured senior creditors for backstopping senior creditors, as a percentage to senior creditors rights offering.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationConsiderationForBackstopUnsecuredSeniorCreditors
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Assume enterprise value in reorganization agreement with creditors.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationEnterpriseValue
Namespace Prefix:	batl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Price per common share discount to enterprise value in a reorganization agreement with creditors.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationPricePerCommonShareDiscountToEnterpriseValue
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The pro rata share of common stock that the existing stockholders will receive in reorganization agreement.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationProRateShareOfCommonStockStockholders
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The pro rata share of common stock that the unsecured noteholders will receive in reorganization agreement.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationProRateShareOfCommonStockUnsecuredNoteholders
Namespace Prefix:	batl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of aggregate purchase price of pro rata shares of common shares offered to existing common stockholder.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationPurchasePriceOfProRataShareOfNewCommonSharesOfferedToCommonStockholders
Namespace Prefix:	batl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of aggregate purchase price of pro rata shares of common shares offered to unsecured senior noteholders.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationPurchasePriceOfProRataShareOfNewCommonSharesOfferedToUnsecuredSeniorNoteholders
Namespace Prefix:	batl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The maximum shares of common stock holding by existing stockholders will receive cash in reorganization agreement.

+ References

No definition available.

+ Details

Name:	batl_ReorganizationThresholdSharesOfCommonStockHoldingByExistingStockholdersWillReceiveCash
Namespace Prefix:	batl_
Data Type:	xbrli:sharesItemType
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=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=batl_SeniorSecuredNotesTwoDue2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=batl_SeniorNotesDue2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=batl_RestructuringSupportAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
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REORGANIZATION (Details) - USD ($) $ in Millions	Aug. 02, 2019	Dec. 31, 2019	Oct. 08, 2019	Oct. 08, 2018	Oct. 07, 2017	Jul. 10, 2017	Feb. 16, 2017
Restructuring Support Agreement
Warrant term (in years)			3 years
8.625% senior secured second lien notes due 2020
Restructuring Support Agreement
Interest rate (as a percent)							8.625%
12.0% senior secured second lien notes due 2022
Restructuring Support Agreement
Interest rate (as a percent)					12.00%
6.75% senior notes due 2025
Restructuring Support Agreement
Interest rate (as a percent)	6.75%	6.75%	6.75%	6.75%		6.75%	6.75%
The Restructuring Support Agreement
Restructuring Support Agreement
Pro rate share of common stock that unsecured noteholders will receive	91.00%
Pro rate share of common stock that stockholders will receive	9.00%
Aggregate price of new common shares offered to unsecured senior noteholders	$ 150.2
Aggregate price of new common shares offered to existing common shareholders	$ 5.8
Price per share discount (as a percent)	26.00%
Assumed enterprise value	$ 425.0
Consideration to unsecured senior noteholders for backstop senior noteholders rights offering (as a percent)	6.00%
Cash payment percentage on termination of backstop agreement	6.00%
Warrant term (in years)	3 years
Percentage of cumulative warrants issued to new shares	30.00%
The Restructuring Support Agreement \| Maximum
Restructuring Support Agreement
Threshold shares of common stock holding by existing stockholders will receive cash	2,000