XML 61 R43.htm IDEA: XBRL DOCUMENT v3.20.4

SUMMARY OF SIGNIFICANT EVENTS AND ACCOUNTING POLICIES - 401 (k) Plan (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2019	Oct. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
401(k) Plan
Eligibility age for employees to participate in the plan			18 years
Company's matching contributions	$ 0.2	$ 1.1	$ 0.8		$ 1.5
Company's matching contributions dollar-for-dollar on employee's pre-tax earnings (as a percent)		10.00%	10.00%	10.00%	10.00%

X

- Definition

The minimum eligibility age for employees to participate in the defined contribution plan.

+ References

No definition available.

+ Details

Name:	batl_DefinedContributionPlanEligibilityMinimumAge
Namespace Prefix:	batl_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration