Consolidated Balance Sheet Components - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 12,794	$ 8,491
Less: Allowance for doubtful accounts	(236)	(808)
Total	12,558	7,683
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	708	164
Receivables from customers, clients and liquidity partners
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	2,208	1,242
Crypto Receivable From Liquidity Providers [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	3,903	5,833
Deposits
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	27	2
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 5,948	$ 1,250