Repurchase Agreements, net - Additional Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025 USD ($) counterparty	Dec. 31, 2024 USD ($) counterparty
Concentration Risk [Line Items]
Number of counterparties with master repurchase agreements	33	33
Repurchase agreements, carrying amount \| $	$ 12,490,792	$ 10,713,830
Number of counterparties with repurchase agreements outstanding	17	17
Average haircut (as a percent)	2.74%	2.77%
Ratio of indebtedness to net capital	12
Aggregate Borrowings \| Counterparty Concentration Risk
Concentration Risk [Line Items]
Number of counterparties	4	3
BUCKLER Securities, LLC \| Aggregate Borrowings \| Counterparty Concentration Risk
Concentration Risk [Line Items]
Percentage of concentration risk	45.70%	45.70%
BUCKLER Securities, LLC \| Stockholders' Equity \| Counterparty Concentration Risk
Concentration Risk [Line Items]
Percentage of concentration risk	7.40%	8.00%
Weighted average maturity (in days)	30 days	15 days
Three Repurchase Agreement Counterparties \| Aggregate Borrowings \| Counterparty Concentration Risk
Concentration Risk [Line Items]
Percentage of concentration risk	5.00%	5.00%
Three Repurchase Agreement Counterparties \| Repurchase Agreement Borrowings \| Counterparty Concentration Risk
Concentration Risk [Line Items]
Percentage of concentration risk	23.00%	19.90%

Concentration Risk, Weighted Average Maturity

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Haircut On Repurchase Agreements

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Repurchase Agreements, Number Of Counterparties With Outstanding Borrowings

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- Definition

Carrying amount of assets sold under agreements to repurchase when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under repurchase agreements exceeds 10 percent of total assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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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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Indebtedness divided by net capital.

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