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Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) |  | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |  |
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Jun. 30, 2023 shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2023 USD ($) shares | Jun. 30, 2023 shares | Sep. 30, 2024 USD ($) Segment $ / shares shares | Sep. 30, 2023 USD ($) shares | Aug. 01, 2024 | Jul. 31, 2024 | Dec. 31, 2023 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Cash In Transit | $ |  | $ 4,200,000 |  |  | $ 4,200,000 |  |  |  | $ 5,300,000
Cryptocurrencies | $ |  | 1,311,000 |  |  | 1,311,000 |  |  |  | 712,000
Depreciation | $ |  | 1,900,000 | $ 2,900,000 |  | 7,100,000 | $ 8,400,000 |  |  |
Estimated useful lives of owned and leased kiosks |  |  |  |  |  |  | 7 years | 5 years |
Depreciation expense | $ |  | $ 800,000 |  |  | $ 800,000 |  |  |  |
Increase in earnings per share, basic | $ / shares |  | $ 0 |  |  | $ 0 |  |  |  |
Increase in earnings per share, diluted | $ / shares |  | $ 0 |  |  | $ 0 |  |  |  |
Impairment of long lived assets held for use | $ |  |  |  |  | $ 0 | 0 |  |  |
Impairment of goodwill | $ |  |  |  |  | 0 | $ 0 |  |  |
Federal income tax expense benefit | $ |  |  |  |  | $ 0 |  |  |  |
Number of operating segments | Segment |  |  |  |  | 1 |  |  |  |
Number of reporting segments | Segment |  |  |  |  | 1 |  |  |  |
Weighted average common stock outstanding - basic |  | 20,701,447 | 16,658,691 |  | 18,908,391 | 16,658,691 |  |  |
Weighted average common stock outstanding - diluted |  | 20,701,447 | 16,658,691 |  | 18,908,391 | 16,658,691 |  |  |
Class of Warrant or Right, Outstanding |  | 43,848,750 |  |  | 43,848,750 |  |  |  |
Bitcoin [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Cryptocurrencies | $ |  | $ 700,000 |  |  | $ 700,000 |  |  |  |
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] |  |  |  |  |  |  |  |  |
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] | 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 E One Common Stock [Member] | Sponsor [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Earnout shares issuable |  | 358,587 |  |  | 358,587 |  |  |  |
Period post merger during which the stock price is determined |  |  |  |  | 7 years |  |  |  |
Minimum stock price triggering earnout share issue | $ / shares |  |  |  |  | $ 12 |  |  |  |
Threshold number of trading days for determining the share price |  |  |  |  | 10 days |  |  |  |
Threshold number of consecutive trading days for determining the share price |  |  |  |  | 20 days |  |  |  |
Class E Two Common Stock [Member] | Sponsor [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Earnout shares issuable |  | 358,587 |  |  | 358,587 |  |  |  |
Period post merger during which the stock price is determined |  |  |  |  | 7 years |  |  |  |
Minimum stock price triggering earnout share issue | $ / shares |  |  |  |  | $ 14 |  |  |  |
Threshold number of trading days for determining the share price |  |  |  |  | 10 days |  |  |  |
Threshold number of consecutive trading days for determining the share price |  |  |  |  | 20 days |  |  |  |
Class E Three Common Stock [Member] | Sponsor [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Earnout shares issuable |  | 358,587 |  |  | 358,587 |  |  |  |
Period post merger during which the stock price is determined |  |  |  |  | 10 years |  |  |  |
Minimum stock price triggering earnout share issue | $ / shares |  |  |  |  | $ 16 |  |  |  |
Threshold number of trading days for determining the share price |  |  |  |  | 10 days |  |  |  |
Threshold number of consecutive trading days for determining the share price |  |  |  |  | 20 days |  |  |  |
Class A Common Stock [Member] | Sponsor [Member] | GSRM [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Earnout shares issuable |  | 1,075,761 |  |  | 1,075,761 |  |  |  |
Common Stock [Member] | Bitcoin Depot Inc. [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Common Unit, Outstanding | 41,200,000 |  |  | 41,200,000 |  |  |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Advertising expenses | $ |  | $ 1,500,000 | $ 1,400,000 |  | $ 4,800,000 | $ 4,000,000 |  |  |
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | No Major Customer [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Concentration risk percentage |  |  |  |  | 10.00% | 10.00% |  |  |
Bitcoin Teller Machine [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Cash balances | $ |  | 11,800,000 |  |  | $ 11,800,000 |  |  |  | 12,200,000
Cryptocurrency Exchanges [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Cash balances | $ |  | $ 100,000 |  |  | $ 100,000 |  |  |  | $ 100,000
Intuitive Software LLC [Member] |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  | 82.14% |  |  | 82.14% |  |  |  |

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