Borrowings - SBA Guaranteed Debentures Repayments (Details) - USD ($) $ in Thousands						9 Months Ended		19 Months Ended
	Aug. 31, 2026	Mar. 02, 2026	Feb. 27, 2026	Aug. 29, 2025	Feb. 28, 2025	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid						$ 76,205	$ 103,795	$ 180,000
SBA Guaranteed Debentures, Issued March 25, 2015, Maturity Date March 1, 2025 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid					$ 37,500
SBA Guaranteed Debentures, Issued September 23, 2015, Maturity Date September 1, 2025 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid				$ 66,295
SBA Guaranteed Debentures, Issued March 23, 2016, Maturity Date March1, 2026 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid			$ 13,950
SBA Guaranteed Debentures, Issued September 21, 2016, Maturity Date September 1, 2026 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid	$ 4,000
SBA Guaranteed Debentures, Issued September 20, 2017, Maturity Date September 1, 2027 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid	13,000
SBA Guaranteed Debentures, Issued March 21, 2018, Maturity Date March 1, 2028 \| SBIC I
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid	15,255
SBA Guaranteed Debentures, Issued September 19, 2018, Maturity Date September 1, 2028 \| SBIC II
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid	2,000	$ 13,000
SBA Guaranteed Debentures, Issued September 25, 2019, Maturity Date September 1, 2029 \| SBIC II
Debt Instrument [Line Items]
Total SBA-guaranteed debentures repaid	$ 15,000