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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 30, 2025 USD ($) $ / shares shares | Jun. 30, 2023 shares | Dec. 31, 2024 USD ($) $ / shares shares | Sep. 30, 2025 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) shares | Jun. 30, 2023 shares | Sep. 30, 2025 USD ($) Segment $ / shares shares | Sep. 30, 2024 USD ($) shares | Mar. 31, 2025 shares | Jan. 01, 2025 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Cash In Transit | $ |  |  | $ 2,600,000 | $ 1,700,000 |  |  | $ 1,700,000 |  |  |
Cryptocurrencies | $ |  |  | 1,510,000 | 13,634,000 |  |  | 13,634,000 |  |  | $ 2,362,000
Depreciation | $ |  |  |  | 1,500,000 | $ 1,900,000 |  | 4,500,000 | $ 7,100,000 |  |
Impairment of long lived assets held for use | $ |  |  |  | 0 | 0 |  | 0 | 0 |  |
Impairment of goodwill | $ |  |  |  | $ 0 | $ 0 |  | $ 0 | $ 0 |  |
Number of operating segments | Segment |  |  |  |  |  |  | 1 |  |  |
Number of reporting segments | Segment |  |  |  |  |  |  | 1 |  |  |
Weighted average common stock outstanding - basic |  |  |  | 67,822,957 | 20,701,447 |  | 42,165,276 | 18,908,391 |  |
Weighted average common stock outstanding - diluted |  |  |  | 67,822,957 | 20,701,447 |  | 42,165,276 | 18,908,391 |  |
Distribution paid | $ |  |  |  |  |  |  | $ 10,117,000 | $ 22,748,000 |  |
Class of Warrant or Right, Outstanding |  |  |  | 43,848,750 |  |  | 43,848,750 |  |  |
Class of warrant or right exercise price | $ / shares |  |  |  | $ 11.5 |  |  | $ 11.5 |  |  |
Gross Profit from operation |  |  |  |  |  |  | 6.50% |  |  |
Bitcoin [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Cryptocurrencies | $ |  |  | 600,000 |  |  |  |  |  |  |
Cryptocurrency, Fair Value | $ |  |  |  | $ 11,400,000 |  |  | $ 11,400,000 |  |  |
Public Warrants [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding |  |  |  | 31,625,000 |  |  | 31,625,000 |  |  |
Private Warrants [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding |  |  |  | 12,223,750 |  |  | 12,223,750 |  |  |
BT Hold Co [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Distribution paid | $ |  |  | $ 29,000,000 |  |  |  |  |  |  |
Conversion of stock, description |  |  |  |  |  |  | During the three months ended March 31, 2025, the holders of the Series A Preferred Stock exercised their option to convert the Series A Preferred Stock for Class A common stock on a 1:1 basis. |  |  |
Additional earnout shares issuable |  |  |  | 15,000,000 |  |  | 15,000,000 |  |  |
GSRM [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of warrants or rights assumed in the course of business combination |  |  |  | 43,848,750 |  |  | 43,848,750 |  |  |
GSRM [Member] | Public Warrants [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of warrants or rights assumed in the course of business combination |  |  |  | 31,625,000 |  |  | 31,625,000 |  |  |
GSRM [Member] | Private Warrants [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of warrants or rights assumed in the course of business combination |  |  |  | 12,223,750 |  |  | 12,223,750 |  |  |
Bt Assets [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares issued |  | 44,100,000 |  |  |  |  |  |  |  |
Bt Assets [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Payment for termination of Tax Receivable Agreement | $ | $ 9,100,000 |  |  |  |  |  |  |  |  |
Bt Assets [Member] | Founder Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Limited Liability Company (LLC) Preferred Unit, Outstanding |  | 2,900,000 |  |  |  | 2,900,000 |  |  |  |
Bt Assets [Member] | Class 1 Earnout Units [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout Unit Outstanding |  |  |  |  |  | 5,000,000 |  |  |  |
Bt Assets [Member] | Class 2 Earnout Units [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout Unit Outstanding |  |  |  |  |  | 5,000,000 |  |  |  |
Bt Assets [Member] | Class 3 Earnout Units [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout Unit Outstanding |  |  |  |  |  | 5,000,000 |  |  |  |
Bitcoin Depot Inc. [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Common unit, issued |  | 12,358,691 |  |  |  | 12,358,691 |  |  |  |
Common Unit, Outstanding |  | 12,358,691 |  |  |  | 12,358,691 |  |  |  |
Limited Liability Company (LLC) Preferred Unit, Outstanding |  | 4,300,000 |  |  |  | 4,300,000 |  |  |  |
Class of Warrant or Right, Outstanding |  | 43,848,750 |  |  |  | 43,848,750 |  |  |  |
Class A Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  | 19,072,544 | 27,747,562 |  |  | 27,747,562 |  |  |
Shares issued |  |  | 19,263,164 | 27,938,182 |  |  | 27,938,182 |  |  |
Common stock, vote per share |  |  |  |  |  |  | one vote |  |  |
Par value | $ / shares |  |  | $ 0.0001 | $ 0.0001 |  |  | $ 0.0001 |  |  |
Class A Common Stock [Member] | BT Hold Co [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, vote per share | one vote |  |  |  |  |  |  |  |  |
Class of warrant or right exercise price | $ / shares | $ 11.5 |  |  |  |  |  |  |  |  |
Class A Common Stock [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Class of warrant or right exercise price | $ / shares |  |  |  | $ 11.5 |  |  | $ 11.5 |  |  |
Common Stock [Member] | BT Hold Co [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding | 41,193,024 |  |  |  |  |  |  |  |  |
Common stock shares issued and outstanding percentage | 63.48% |  |  |  |  |  |  |  |  |
Common Stock [Member] | Bt Assets [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares of capital stock consideration percentage | 100.00% |  |  |  |  |  |  |  |  |
Common Stock [Member] | Bitcoin Depot Inc. [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Common Unit, Outstanding |  | 41,200,000 |  |  |  | 41,200,000 |  |  |  |
Class E Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  | 1,075,761 | 0 |  |  | 0 |  |  |
Shares issued |  |  | 1,075,761 | 0 |  |  | 0 |  |  |
Earnout shares issuable |  |  |  | 15,000,000 |  |  | 15,000,000 |  |  |
Par value | $ / shares |  |  | $ 0.0001 | $ 0.0001 |  |  | $ 0.0001 |  |  |
Class E Common Stock [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout shares issuable | 15,000,000 |  |  |  |  |  |  |  |  |
Class E Common Stock [Member] | Sponsor [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout shares issuable |  |  |  | 1,075,061 |  |  | 1,075,061 |  | 1,075,061 |
Class E Common Stock [Member] | Sponsor [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Earnout shares issuable |  |  |  | 1,075,761 |  |  | 1,075,761 |  |  |
Class V Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  |  | 0 |  |  | 0 |  |  |
Par value | $ / shares |  |  |  | $ 0.0001 |  |  | $ 0.0001 |  |  |
Common stock percentage of voting rights |  |  |  | 20.00% |  |  | 20.00% |  |  |
Class V Common Stock [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued | 41,193,024 |  |  |  |  |  |  |  |  |
Class V Common Stock [Member] | BT Hold Co [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding | 41,193,024 |  |  |  |  |  |  |  |  |
Class V Common Stock [Member] | BT Hold Co [Member] | Minimum [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock percentage of voting rights | 20.00% |  |  |  |  |  |  |  |  |
Class M Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares outstanding |  |  |  | 40,779,094 |  |  | 40,779,094 |  |  |
Common stock, vote per share |  |  |  |  |  |  | ten votes |  |  |
Par value | $ / shares |  |  |  | $ 0.0001 |  |  | $ 0.0001 |  |  |
Class M Common Stock [Member] | Bt Assets [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued | 41,193,024 |  |  |  |  |  |  |  |  |
Common stock, vote per share | ten votes |  |  |  |  |  |  |  |  |
Class M Common Stock [Member] | Bt Assets [Member] | Minimum [Member] | Up-C Restructuring [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock percentage of voting rights | 20.00% |  |  |  |  |  |  |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Advertising expenses | $ |  |  |  | $ 1,700,000 | $ 1,500,000 |  | $ 4,900,000 | $ 4,800,000 |  |
Bitcoin Teller Machine [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Cash balances | $ |  |  | $ 10,700,000 | $ 14,900,000 |  |  | $ 14,900,000 |  |  |
Intuitive Software LLC [Member] |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  | 82.14% |  |  | 82.14% |  |  |

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