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Merger - Schedule Of transaction funding, sources and uses of cash, and merger related earn-outs and warrants (Detail) - GSRM [Member] $ in Thousands | 6 Months Ended
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Jun. 30, 2023 USD ($)
Merger [Line Items] |
Cash - GSR II Meteora Acquisition Corp Trust | $ 332,102
Less: GSRM transactions cost paid from Trust | (25,958)
Less: Purchase of BT HoldCo common units from BT Assets | (10,066)
Redemption shareholders | (292,735)
Net proceeds from GSRM shareholders | 3,343
Assumed net liabilities from GSRM, excluding net cash proceeds | (6,850)
Net Impact of the Merger on the Statement of Changes in Stockholders' and Member's Equity | $ (3,507)

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- Definition Assumed net liabilities excluding net cash proceeds. + References No definition available. + Details
Name: | btm_AssumedNetLiabilitiesExcludingNetCashProceeds
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Cash held in trust received. + References No definition available. + Details
Name: | btm_CashHeldInTrustReceived
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Merger. + References No definition available. + Details
Name: | btm_MergerLineItems
Namespace Prefix: | btm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Net impact of merger on statement of equity. + References No definition available. + Details
Name: | btm_NetImpactOfMergerOnStatementOfEquity
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Net proceeds from special purpose acquisition company shareholders. + References No definition available. + Details
Name: | btm_NetProceedsFromSpecialPurposeAcquisitionCompanyShareholders
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Purchase of assets under merger transaction. + References No definition available. + Details
Name: | btm_PurchaseOfAssetsUnderMergerTransaction
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Redemption to existing shareholders. + References No definition available. + Details
Name: | btm_RedemptionToExistingShareholders
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Transaction costs paid from trust. + References No definition available. + Details
Name: | btm_TransactionCostsPaidFromTrust
Namespace Prefix: | btm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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