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Fair Value Measurements - Schedule of Safeguarding Assets and Liabilities (Details)
$ in Thousands
Sep. 30, 2023
USD ($)
digitalAsset
Dec. 31, 2022
USD ($)
digitalAsset
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset $ 139,359 $ 106,826
Digital assets safeguarding liability 139,359 106,826
Bitcoin (BTC)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 74,761 44,346
Digital assets safeguarding liability 74,761 44,346
Ethereum (ETH)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 47,276 37,826
Digital assets safeguarding liability 47,276 37,826
Dogecoin (DOGE)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 4,478 4,784
Digital assets safeguarding liability 4,478 4,784
Litecoin (LTC)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 2,544 2,492
Digital assets safeguarding liability 2,544 2,492
Ethereum Classic (ETC)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 2,249 2,333
Digital assets safeguarding liability 2,249 2,333
Cardano (ADA)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 0 5,217
Digital assets safeguarding liability 0 5,217
Solana (SOL)    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 0 1,588
Digital assets safeguarding liability 0 1,588
All other    
Platform Operator, Crypto-Asset [Line Items]    
Digital assets safeguarding asset 8,051 8,240
Digital assets safeguarding liability $ 8,051 $ 8,240
Number of digital assets held | digitalAsset 17 23