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Third Party Loans - Schedule of Third Party Loans Transactions (Details) $ in Thousands			9 Months Ended	12 Months Ended
	Sep. 30, 2025 USD ($) crypto_unit	Dec. 31, 2024 USD ($) crypto_unit	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Bitcoin | Galaxy Digital LLC
Debt Instrument [Line Items]
Collateral Rate (Initial Collateral Level)	151.00%	140.00%	151.00%	140.00%
Crypto assets received (in units) | crypto_unit	818	929
Total collateral associated with loan	$ 93,300	$ 86,700	$ 93,300	$ 86,700
Ether | Galaxy Digital LLC
Debt Instrument [Line Items]
Collateral Rate (Initial Collateral Level)	159.00%	149.00%	159.00%	149.00%
Crypto assets received (in units) | crypto_unit	20,960	24,625
Total collateral associated with loan	$ 86,900	$ 81,600	$ 86,900	$ 81,600
Galaxy Digital LLC
Debt Instrument [Line Items]
Principal Outstanding	116,500	116,500	116,500	116,500
Interest Expense			9,794	12,198
Interest Payable	1,076	1,112	1,076	1,112
Galaxy Digital LLC | Loan 1
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 577
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		160.00%		160.00%
Galaxy Digital LLC | Loan 2
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 499
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		150.00%		150.00%
Galaxy Digital LLC | Loan 3
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 104
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		160.00%		160.00%
Galaxy Digital LLC | Loan 4
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 131
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		150.00%		150.00%
Galaxy Digital LLC | Loan 5
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 409
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		160.00%		160.00%
Galaxy Digital LLC | Loan 6
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 409
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		150.00%		150.00%
Galaxy Digital LLC | Loan 7
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 209
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		160.00%		160.00%
Galaxy Digital LLC | Loan 8
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 428
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		145.00%		145.00%
Galaxy Digital LLC | Loan 9
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 243
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		155.00%		155.00%
Galaxy Digital LLC | Loan 10
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.50%		11.50%
Interest Expense				$ 489
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		160.00%		160.00%
Galaxy Digital LLC | Loan 11
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 967
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		145.00%		145.00%
Galaxy Digital LLC | Loan 12
Debt Instrument [Line Items]
Principal Outstanding		$ 0		$ 0
Interest Rate		11.00%		11.00%
Interest Expense				$ 550
Interest Payable		$ 0		$ 0
Collateral Rate (Initial Collateral Level)		155.00%		155.00%
Galaxy Digital LLC | Loan 13
Debt Instrument [Line Items]
Principal Outstanding	$ 51,900	$ 51,900	$ 51,900	$ 51,900
Interest Rate	11.00%	11.00%	11.00%	11.00%
Interest Expense			$ 4,329	$ 3,410
Interest Payable	$ 476	$ 492	$ 476	$ 492
Collateral Rate (Initial Collateral Level)	145.00%	145.00%	145.00%	145.00%
Galaxy Digital LLC | Loan 14
Debt Instrument [Line Items]
Principal Outstanding	$ 54,600	$ 54,600	$ 54,600	$ 54,600
Interest Rate	11.00%	11.00%	11.00%	11.00%
Interest Expense			$ 4,555	$ 3,570
Interest Payable	$ 500	$ 517	$ 500	$ 517
Collateral Rate (Initial Collateral Level)	155.00%	155.00%	155.00%	155.00%
Galaxy Digital LLC | Loan 15
Debt Instrument [Line Items]
Principal Outstanding	$ 10,000	$ 10,000	$ 10,000	$ 10,000
Interest Rate	12.00%	12.00%	12.00%	12.00%
Interest Expense			$ 910	$ 203
Interest Payable	$ 100	$ 103	$ 100	$ 103
Collateral Rate (Initial Collateral Level)	145.00%	145.00%	145.00%	145.00%

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