XML 70 R56.htm IDEA: XBRL DOCUMENT
v3.22.2

STOCKHOLDERS' EQUITY, Private Placement of Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Mar. 06, 2022
Private Placement of Equity [Abstract] |  |  |
Aggregate gross purchase price | $ 12,000 |  |
Warrants fair value | 12,589 |  |
Over-subscription amount received | $ 600 |  |
Common Warrants [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Warrants exercise price (in dollars per share) | $ 1.91 |  | $ 1.91
Percentage of warrants exercisable |  |  | 4.99%
Warrant exercisable term | 6 months |  |
Warrants outstanding weighted average contractual life | 5 years 2 months 12 days |  |
Warrants outstanding (in shares) | 6,857,000 |  |
Pre-funded Warrants [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Warrants exercise price (in dollars per share) | $ 0.005 |  | $ 0.005
Percentage of warrants exercisable |  |  | 9.99%
Warrants outstanding (in shares) | 1,357,000 |  |
PIPE Investor [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Private placement (in shares) |  |  | 6,857,000
Aggregate gross purchase price |  |  | $ 12,000
Variable rate transaction period | 1 year |  |
Warrants fair value | $ 12,600 |  |
Over-subscription amount received | $ 600 |  |
Obligation to pay liquidated damages per month | 2.00% |  |
Transaction fees | $ 1,000 |  |
Consecutive calendar days | 10 days |  |
Aggregate calendar days | 15 days |  |
Estimated contingent loss |  | $ 200 |
Liquidated damages payment | $ 200 |  |
PIPE Investor [Member] | Maximum [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Obligated to pay liquidated damages percentage | 12.00% |  |
PIPE Investor [Member] | Common Warrants [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Private placement (in shares) |  |  | 5,500,000
Number of common stock (in shares) |  |  | 1
Warrant expiration term | 5 years 6 months |  |
PIPE Investor [Member] | Pre-funded Warrants [Member] |  |  |
Private Placement of Equity [Abstract] |  |  |
Private placement (in shares) |  |  | 1,357,000
Number of common stock (in shares) |  |  | 1

X
- Definition In the event the PIPE Investor is not permitted to use the registration statement to resell the securities registered in specified aggregate calendar days (which need not be consecutive calendar days) during any 12-month period for resale, Updated definition. + References No definition available. + Details
Name: | btx_AggregateCalendarDays
Namespace Prefix: | btx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of securities that would be issuable upon the exercise of warrants or rights. + References No definition available. + Details
Name: | btx_ClassOfWarrantOrRightPercentOfSecuritiesThatWouldBeIssuableUponExerciseOfWarrantsOrRights
Namespace Prefix: | btx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Warrants or rights exercisable term, , in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | btx_ClassOfWarrantOrRightsExercisableTerm
Namespace Prefix: | btx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition In the event the PIPE Investor is not permitted to use the registration statement to resell the securities registered in specified consecutive calendar days for resale, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | btx_ConsecutiveCalendarDays
Namespace Prefix: | btx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pursuant to the registration rights agreement, obligation to pay the PIPE Investor liquidated damages percentage of aggregate payment on Subscription Amount. + References No definition available. + Details
Name: | btx_ObligationToPayLiquidatedDamagesPercentage
Namespace Prefix: | btx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Pursuant to the registration rights agreement, obligation to pay the PIPE Investor liquidated damages equal to the Subscription Amount per month. + References No definition available. + Details
Name: | btx_ObligationToPayLiquidatedDamagesPercentageOnSubscriptionAmountPerMonth
Namespace Prefix: | btx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Over-subscription amount received in PIPE (Private Investment in Public Equity) transaction. + References No definition available. + Details
Name: | btx_OverSubscriptionAmountReceived
Namespace Prefix: | btx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Fees incurred related to PIPE transaction. + References No definition available. + Details
Name: | btx_TransactionFeesPayable
Namespace Prefix: | btx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pursuant to the Purchase Agreement, the Company is prohibited from issuing equity in variable rate transactions for a period in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | btx_VariableRateTransactionsPeriod
Namespace Prefix: | btx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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

X
- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- 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

X
- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of damages paid to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyDamagesPaidValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12021-110248 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- 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 https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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

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

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

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |