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COMMITMENTS AND CONTINGENCIES, Licensing Agreements (Details) - USD ($) |  |  | 3 Months Ended
--- | --- | --- | ---
Apr. 29, 2021 | Apr. 13, 2021 | Mar. 31, 2021
Novellus [Member] | Subsequent Event [Member] |  |  |
Licensing Agreements [Abstract] |  |  |
Non-refundable option fee |  | $ 500,000 |
Payment of advance on license fee | $ 1,500,000 | 1,000,000 |
Upfront payment |  | $ 4,000,000 |
University of South Florida [Member] |  |  |
Licensing Agreements [Abstract] |  |  |
Percentage of royalty payable |  |  | 7.00%
Within Six Months of Signing [Member] | Novellus [Member] | Subsequent Event [Member] |  |  |
Licensing Agreements [Abstract] |  |  |
Payment of additional milestones upfront payment | 5,000,000 |  |
Within Eighteen Months of Signing [Member] | Novellus [Member] | Subsequent Event [Member] |  |  |
Licensing Agreements [Abstract] |  |  |
Payment of additional milestones upfront payment | $ 7,000,000 |  |

X
- Definition The amount of payment of advance on license fee. + References No definition available. + Details
Name: | btx_AdvancePaymentOnLicenseFee
Namespace Prefix: | btx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | btx_LicensingAgreementsAbstract
Namespace Prefix: | btx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of Non-refundable option fee in licensing agreement. + References No definition available. + Details
Name: | btx_LossContingencyNonRefundableOptionFee
Namespace Prefix: | btx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of royalty payable from one party to another in licensing agreement. + References No definition available. + Details
Name: | btx_LossContingencyPercentageOfRoyaltyPayable
Namespace Prefix: | btx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of upfront payment on licenses. + References No definition available. + Details
Name: | btx_UpfrontPaymentOnLicenses
Namespace Prefix: | btx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of consideration recognized during the period for the milestone or milestones. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=btx_NovellusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=btx_UniversityOfSouthFloridaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=btx_WithinSixMonthsOfSigningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Data Type: | na
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Period Type: |