Number of warrants or rights exercised during the period.

No definition available.

Name:	btx_ClassOfWarrantOrRightExercised
Namespace Prefix:	btx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

- References

No definition available.

+ Details

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

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=btx_PreFundedWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=btx_CommonWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=btx_PIPEInvestorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SUBSEQUENT EVENT (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 12, 2022	Jul. 14, 2022	Jun. 30, 2022	Mar. 09, 2022	Mar. 06, 2022
Pre-funded Warrants [Member]
Warrant [Abstract]
Warrants exercise price (in dollars per share)			$ 0.005		$ 0.005
Warrants exercisable (in shares)				1,357,000
Warrants outstanding (in shares)			1,357,000
Common Warrants [Member]
Warrant [Abstract]
Warrants exercise price (in dollars per share)			$ 1.91		$ 1.91
Warrants exercisable (in shares)				6,857,000
Warrants outstanding (in shares)			6,857,000
Subsequent Event [Member] \| PIPE Investor [Member]
Warrant [Abstract]
Warrants outstanding (in shares)	0
Subsequent Event [Member] \| PIPE Investor [Member] \| Pre-funded Warrants [Member]
Warrant [Abstract]
Warrants exercised (in shares)	1,357,000
Warrants exercise price (in dollars per share)	$ 0.005
Aggregate exercise price	$ 6,786
Subsequent Event [Member] \| PIPE Investor [Member] \| Common Warrants [Member]
Warrant [Abstract]
Warrants exercisable (in shares)		1,357,000