Funds Borrowed - Schedule of SBA Debentures and Borrowings (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
SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Aggregate principal amount	[1]	$ 70,500	70,250
March 2015 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2025
Interest Rate		2.87%
Interest Payable		Semi-annually
Aggregate principal amount		$ 0	10,000
September 2015 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2025
Interest Rate		3.57%
Interest Payable		Semi-annually
Aggregate principal amount		$ 4,000	4,000
March 2016 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2026
Interest Rate		3.25%
Interest Payable		Semi-annually
Aggregate principal amount		$ 1,500	1,500
March 2016 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2026
Interest Rate		3.18%
Interest Payable		Semi-annually
Aggregate principal amount		$ 10,000	10,000
May 2016 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2026
Interest Rate		2.72%
Interest Payable		Semi-annually
Aggregate principal amount		$ 2,500	2,500
March 2017 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2027
Interest Rate		3.52%
Interest Payable		Semi-annually
Aggregate principal amount		$ 2,000	2,000
September 2018 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2028
Interest Rate		4.22%
Interest Payable		Semi-annually
Aggregate principal amount		$ 1,250	1,250
March 2019 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2029
Interest Rate		3.79%
Interest Payable		Semi-annually
Aggregate principal amount		$ 1,250	1,250
September 2020 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2030
Interest Rate		1.71%
Interest Payable		Semi-annually
Aggregate principal amount		$ 3,000	3,000
June 2021 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2031
Interest Rate		1.58%
Interest Payable		Semi-annually
Aggregate principal amount		$ 8,500	8,500
October 2021 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2032
Interest Rate		3.21%
Interest Payable		Semi-annually
Aggregate principal amount		$ 7,000	7,000
October 2022 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2033
Interest Rate		5.44%
Interest Payable		Semi-annually
Aggregate principal amount		$ 4,750	4,750
April 2023 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2033
Interest Rate		5.96%
Interest Payable		Semi-annually
Aggregate principal amount		$ 4,750	4,750
September 2023 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2034
Interest Rate		5.08%
Interest Payable		Semi-annually
Aggregate principal amount		$ 4,750	4,750
November 2023 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Mar. 31, 2034
Interest Rate		5.08%
Interest Payable		Semi-annually
Aggregate principal amount		$ 5,000	5,000
March 2025 [Member] | SBA Debentures and Borrowings [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 30, 2035
Interest Rate		5.00%
Interest Payable		Semi-annually
Aggregate principal amount		$ 10,250	$ 0

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