Debt instrument exit fee.

No definition available.

Name:	btm_DebtInstrumentExitFee
Namespace Prefix:	btm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt instrument exit fee expensed.

+ References

No definition available.

+ Details

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Namespace Prefix:	btm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Long term debt prepayment fee payable contingently.

+ References

No definition available.

+ Details

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Namespace Prefix:	btm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

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Balance Type:	na
Period Type:	duration

- Definition

Incremental percentage increase (decrease) in the stated rate on a debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to interest.

+ References

+ Details

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

- Definition

Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent.

+ References

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+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

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- Details

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Note Payable - Additional Information (Detail) - USD ($) $ in Millions	Jun. 23, 2023	May 04, 2023	Jun. 30, 2023	Mar. 31, 2022	Dec. 31, 2021	Dec. 21, 2020
Debt Instrument [Line Items]
Long term debt prepayment fee payable contingently			$ 1.7
Old Note [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 5.0	$ 15.0	$ 25.0
Debt instrument, interest rate, stated percentage						15.00%
Debt instrument, periodic payment, interest		$ 0.3
Old Note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, increase		20.00%
Old Note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate, increase		15.00%
New Note [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 20.8
Debt instrument, interest rate, stated percentage	17.00%
Debt instrument, frequency of periodic payment	The Company is required to make monthly interest payments and fixed principal payments every six months beginning on December 15, 2023 through June 15, 2026.
Debt instrument, maturity date	Jun. 23, 2026
Deferred costs			2.4
Debt instrument exit Fee			$ 1.8
Debt instrument exit fee expensed	$ 2.3
Repayments of debt	$ 16.4