Funds Borrowed - Schedule of Private Placement Notes Outstanding (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Aggregate principal amount	[1]	$ 2,299,767	$ 2,376,413
Privately Placed Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount	[1]	$ 146,500	146,500
December 2020 [Member] | Privately Placed Notes [Member]
Debt Instrument [Line Items]
Maturity date		Dec. 31, 2027
Interest Rate		7.50%
Interest Payable		Semi-annually
Aggregate principal amount		$ 53,750	53,750
February 2021 [Member] | Privately Placed Notes [Member]
Debt Instrument [Line Items]
Maturity date		Feb. 28, 2026
Interest Rate		7.25%
Interest Payable		Semi-annually
Aggregate principal amount		$ 31,250	31,250
September 2023 [Member] | Privately Placed Notes [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2028
Interest Rate		9.25%
Interest Payable		Semi-annually
Aggregate principal amount		$ 39,000	39,000
June 2024 [Member] | Privately Placed Notes [Member]
Debt Instrument [Line Items]
Maturity date		Jun. 30, 2039
Interest Rate		8.875%
Interest Payable		Semi-annually
Aggregate principal amount		$ 17,500	17,500
August 2024 [Member] | Privately Placed Notes [Member]
Debt Instrument [Line Items]
Maturity date		Aug. 31, 2039
Interest Rate		8.625%
Interest Payable		Semi-annually
Aggregate principal amount		$ 5,000	$ 5,000

[1] Excludes deferred financing costs of $8.5 million and $8.2 million as of June 30, 2025 and December 31, 2024.