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CUSTOMER ASSETS AND LIABILITIES - Fair Value of Customer Crypto Assets (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 114,291,909 | $ 75,413,188
Percentage of total | 100.00% | 100.00%
Safeguarding And Customer Crypto Assets |  |
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 0 | $ 0
Bitcoin |  |
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 55,700,000 | $ 32,500,000
Percentage of total | 48.70% | 43.10%
Ethereum |  |
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 29,500,000 | $ 20,800,000
Percentage of total | 25.80% | 27.60%
Other crypto assets |  |
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 29,100,000 | $ 22,100,000
Percentage of total | 25.50% | 29.30%
Ethereum |  |
Cryptocurrency, by Type [Line Items] |  |
Safeguarding customer crypto assets | $ 7,100,000 | $ 3,000,000
No Assets | Safeguarding And Customer Crypto Assets | Asset Concentration Risk |  |
Cryptocurrency, by Type [Line Items] |  |
Concentration risk, percentage (more than) | 5.00% | 5.00%

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- Definition Fair value of asset to safeguard crypto-asset held for platform user. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section FF -Subsection Q1 -Publisher SEC + Details
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