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Concentration of Credit Risk (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($) customer item	Mar. 31, 2024 customer	Dec. 31, 2024 USD ($) customer item
Concentration of Credit Risk
Deposits | $	$ 6,195		$ 5,314
U.S. Government money market fund accounts | $	$ 3,676		3,638
Number of bitcoins hold | item	3,192
Fair Value | $	$ 263,504		$ 214,633
Investment holding concentration risk | Intangible digital assets
Concentration of Credit Risk
Number of providers | item	2
Investment holding concentration risk | Intangible digital assets | Provider One
Concentration of Credit Risk
Concentration risk percentage	61.50%
Investment holding concentration risk | Intangible digital assets | Provider Two
Concentration of Credit Risk
Concentration risk percentage	38.50%
Customer concentration risk | Revenue
Concentration of Credit Risk
Number of customers | customer	2	3
Customer concentration risk | Revenue | Customer one
Concentration of Credit Risk
Concentration risk percentage	41.80%	45.00%
Customer concentration risk | Revenue | Customer two
Concentration of Credit Risk
Concentration risk percentage	31.90%	24.70%
Customer concentration risk | Revenue | Customer three
Concentration of Credit Risk
Concentration risk percentage		10.50%
Customer concentration risk | Accounts receivable
Concentration of Credit Risk
Number of customers | customer	2		3
Customer concentration risk | Accounts receivable | Customer one
Concentration of Credit Risk
Concentration risk percentage	38.00%		33.90%
Customer concentration risk | Accounts receivable | Customer two
Concentration of Credit Risk
Concentration risk percentage	28.40%		28.70%
Customer concentration risk | Accounts receivable | Customer three
Concentration of Credit Risk
Concentration risk percentage			14.00%
Supplier concentration risk | Accounts payable
Concentration of Credit Risk
Number of vendors | item	3		3
Supplier concentration risk | Accounts payable | Vendor one
Concentration of Credit Risk
Concentration risk percentage	48.10%		29.40%
Supplier concentration risk | Accounts payable | Vendor two
Concentration of Credit Risk
Concentration risk percentage	12.40%		16.70%
Supplier concentration risk | Accounts payable | Vendor three
Concentration of Credit Risk
Concentration risk percentage	11.30%		15.60%

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Number of major providers of crypto asset holdings in concentration risk.

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Represents number of major vendors in concentration risk.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Fair value of crypto asset. Excludes crypto asset held for platform user.

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Number of restricted and unrestricted crypto asset units held. Excludes crypto asset units held for platform user.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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