v3.25.4

Borrowings - Details 1 (Details) - USD ($)																				1 Months Ended		3 Months Ended		8 Months Ended	9 Months Ended		12 Months Ended
	Nov. 30, 2025	Nov. 06, 2025	Feb. 28, 2025	Jun. 14, 2024	Jan. 03, 2024	Dec. 13, 2022	Nov. 10, 2022	Oct. 27, 2022	Sep. 08, 2022	Aug. 15, 2022	May 10, 2022	Apr. 27, 2022	Apr. 04, 2022	Jan. 19, 2022	Jul. 15, 2021	Mar. 10, 2021	Jan. 28, 2021	Dec. 29, 2020	Jul. 09, 2020	Nov. 30, 2025	Feb. 28, 2025	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2025	Nov. 30, 2025	Nov. 30, 2024	Feb. 28, 2025	Sep. 08, 2025	Jul. 09, 2025	Mar. 27, 2025	Sep. 22, 2022	Aug. 14, 2019	Mar. 23, 2018
Borrowings [Line Items]
Employ leverage, percentage																									200.00%
Asset coverage ratio	168.40%		162.90%																	168.40%	162.90%	168.40%		168.40%	168.40%		162.90%
Administrative agent fee																						$ 1,350,000	$ 1,250,000		$ 3,883,333	$ 3,458,333
Outstanding borrowings																											$ 163,400,000
Realized loss on extinguishment of debt																						$ (123,157)			(123,157)
Amortization of deferred financing cost																									$ 600,000	$ 700,000
Outstanding percentage rate	8.40%																			8.40%		8.40%	9.30%	8.40%	8.40%	9.30%
Line of credit facility minimum drawn amount	$ 75,000,000																			$ 75,000,000		$ 75,000,000		$ 75,000,000	$ 75,000,000
Securitized credit facility	70,000,000		$ 52,500,000																	70,000,000	$ 52,500,000	70,000,000		70,000,000	70,000,000		52,500,000
Commitment amount, percentage		62.00%
Financing costs																									1,376,388	$ 1,176,806
Net income taxes																									382,459	617,665
Borrowing amount	350,000,000																			350,000,000		350,000,000		350,000,000	350,000,000
Amortization of deferred financing																							$ 200,000
Aggregate principal amount																													$ 5,000,000
Interest expense																						11,911,568	13,044,000		36,735,463	39,135,022
Amortization of premium on issuance																							0.2
SBA Debentures [Member]
Borrowings [Line Items]
Interest expense																						1,300,000	$ 1,800,000
Additional long-term capital	$ 175,000,000																			$ 175,000,000		$ 175,000,000		$ 175,000,000	175,000,000
Outstanding amount					$ 350,000,000
Debentures outstanding amount																									$ 170,000,000	$ 214,000,000
Weighted average interest rate																						3.00%	3.30%		3.03%	3.33%
Interest expense																									$ 3,900,000	$ 5,300,000
Debt instrument, interest rate, stated percentage	150.00%																			150.00%		150.00%		150.00%	150.00%
SBIC [Member]
Borrowings [Line Items]
Tangible net					$ 24,000,000
Net income taxes																									$ 8,000,000
7.75% 2025 Notes [Member]
Borrowings [Line Items]
Financing costs																			$ 300,000
Amortization of deferred financing																						$ 0	$ 10,000.00
Aggregate principal amount																			$ 5,000,000
Principal amount, percentage																			7.75%
Net proceeds amount																			$ 4,800,000
Deducting underwriting commissions amount																			200,000
Offering costs																			$ 100,000
Fixed interest, description																			Interest on the 7.75% 2025 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.75% per year.
Interest expense																						$ 0	100,000
Debt instrument, interest rate, stated percentage	7.75%																			7.75%		7.75%		7.75%	7.75%
Par value, per share (in Dollars per share)																	$ 25
6.25% 2027 Notes [Member]
Borrowings [Line Items]
Financing costs																	$ 400,000	$ 100,000
Amortization of deferred financing																						$ 20,000.00	20,000.00		$ 50,000.00	50,000.00
Aggregate principal amount	$ 75,000,000																10,000,000	5,000,000		$ 75,000,000		75,000,000		$ 75,000,000	75,000,000
Net proceeds amount																	9,700,000
Deducting underwriting commissions amount																	300,000
Offering costs																	$ 100,000	$ 100,000
Fixed interest, description																		Interest on the 6.25% 2027 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 6.25% per year.
Interest expense																						$ 200,000	200,000		$ 700,000	700,000
Debt instrument, interest rate, stated percentage	6.25%																	6.25%		6.25%		6.25%		6.25%	6.25%
Per share (in Dollars per share)																									$ 25
Fair value			64,500,000																		64,500,000						64,500,000
6.00% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																									$ 105,500,000	105,500,000
Interest expense																						$ 1,600,000	1,600,000		$ 4,700,000	4,700,000
Financing costs										$ 30,000.00	$ 3,300,000
Aggregate principal amount												$ 87,500,000
Net proceeds amount										7,800,000	9,700,000
Deducting underwriting commissions amount											$ 300,000
Offering costs												100,000
Fixed interest, description											Interest on the 6.00% 2027 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 6.00% per year.
Debt instrument, interest rate, stated percentage	6.00%																			6.00%		6.00%		6.00%	6.00%
Offering costs incurred										$ 200,000
Public offering price percentage										97.80%
Deferred financing costs																						$ 10,000.00	10,000.00		$ 30,000.00	30,000.00
Amortization of premium on issuance																						200,000			$ 600,000	600,000
Net proceeds												84,800,000
Underwriting commissions												$ 2,700,000
Additional aggregate principal amount										$ 8,000,000	$ 10,000,000
Trading symbol per share (in Dollars per share)											$ 25														$ 25
Aggregate principal amount percentage										6.00%
4.375% 2026 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																									$ 175,000,000	175,000,000
Interest expense																						1,900,000	1,900,000		5,700,000	5,700,000
Financing costs															$ 2,700,000	$ 1,300,000
Aggregate principal amount	$ 175,000,000														125,000,000	50,000,000				$ 175,000,000		$ 175,000,000		$ 175,000,000	$ 175,000,000
Net proceeds amount															123,800,000	49,000,000
Deducting underwriting commissions amount																$ 1,000,000
Offering costs															$ 200,000
Fixed interest, description																Interest on the 4.375% 2026 Notes is paid semi-annually in arrears on February 28 and August 28, at a rate of 4.375% per year.
Debt instrument, interest rate, stated percentage	4.375%																			4.375%		4.375%		4.375%	4.375%
Offering costs incurred																$ 300,000
Public offering price percentage															101.00%
Underwriting discounts															$ 2,500,000
Minimum denominations amount	$ 2,000																			$ 2,000		$ 2,000		$ 2,000	$ 2,000
Integral multiples of excess	$ 1,000																			$ 1,000		1,000		$ 1,000	1,000
Deferred financing costs																						100,000	100,000		400,000	400,000
Amortization of premium on issuance																						60,000.00	80,000.00		100,000	200,000
4.35% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																									75,000,000	75,000,000
Interest expense																						$ 800,000	800,000		$ 2,400,000	2,400,000
Financing costs														$ 1,800,000
Aggregate principal amount														$ 75,000,000
Principal amount, percentage														4.35%
Net proceeds amount														$ 73,000,000
Deducting underwriting commissions amount														1,500,000
Offering costs														$ 300,000
Fixed interest, description														Interest on the 4.35% 2027 Notes is paid semi-annually in arrears on February 28 and August 28, at a rate of 4.35% per year.
Debt instrument, interest rate, stated percentage	4.35%																			4.35%		4.35%		4.35%	4.35%
Public offering price percentage														99.317%
Deferred financing costs																							100,000		$ 300,000	300,000
Amortization of premium on issuance																						$ 30,000.00	20,000.00		80,000.00	80,000.00
7.00% 2025 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																									8,300,000	12,000,000
Amortization of deferred financing cost																						0	30,000.00		70,000.00	90,000.00
Financing costs									$ 40,000.00
Amortization of deferred financing																						0	30,000.00		80,000.00	100,000
Aggregate principal amount									$ 12,000,000																			$ 12,000,000
Principal amount, percentage									7.00%
Net proceeds amount									$ 11,600,000
Fixed interest, description									Interest on the 7.00% 2025 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 7.00% per year.
Interest expense																						$ 20,000.00	200,000		$ 400,000	600,000
Debt instrument, interest rate, stated percentage	7.00%																			7.00%		7.00%		7.00%	7.00%
Underwriting discounts									$ 400,000
Offering expenses									$ 50,000.00
8.00% 2027 Notes [Member]
Borrowings [Line Items]
Financing costs							$ 1,700,000
Amortization of deferred financing																							90,000.00	$ 90,000.00
Aggregate principal amount			46,000,000					$ 40,000,000													46,000,000						46,000,000
Net proceeds amount								38,700,000
Deducting underwriting commissions amount							$ 200,000
Fixed interest, description							Interest on the 8.00% 2027 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 8.00% per year
Interest expense																						$ 900,000	900,000
Debt instrument, interest rate, stated percentage	8.00%																			8.00%		8.00%		8.00%	8.00%
Fair value	$ 46,300,000		46,200,000																	$ 46,300,000	46,200,000	$ 46,300,000		$ 46,300,000	$ 46,300,000		46,200,000
Offering costs incurred								200,000
Additional aggregate principal amount							$ 6,000,000
Trading symbol per share (in Dollars per share)																									$ 25
Underwriting commissions								$ 1,300,000
Carrying amount	$ 46,000,000																			$ 46,000,000		46,000,000		$ 46,000,000	$ 46,000,000
8.125% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																									60,400,000	60,400,000
Interest expense																						$ 1,200,000			$ 3,700,000	3,700,000
Aggregate principal amount						$ 52,500,000
Principal amount, percentage						8.125%
Net proceeds amount						$ 50,800,000
Deducting underwriting commissions amount						1,600,000
Offering costs						$ 100,000
Debt instrument, interest rate, stated percentage	8.125%																			8.125%		8.125%		8.125%	8.125%
Fair value	$ 61,000,000		61,000,000																	$ 61,000,000	61,000,000	$ 61,000,000		$ 61,000,000	$ 61,000,000		61,000,000
Deferred financing costs																						100,000	100,000		300,000	300,000
Carrying amount	60,400,000		60,400,000																	60,400,000	60,400,000	60,400,000		60,400,000	$ 60,400,000		60,400,000
Debt instrument, description																									On December 21, 2022, the underwriters fully exercised their option to purchase an additional $7.9 million in aggregate principal amount of the 8.125% 2027 Notes. Net proceeds to the Company were $7.6 million after deducting underwriting commissions of approximately $0.2 million. Interest on the 8.125% 2027 Notes is paid quarterly in arrears on February 28, May 31, August 31 and November 30, at a rate of 8.125% per year. The 8.125% 2027 Notes mature on December 31, 2027 and commencing December 13, 2024, may be redeemed in whole or in part at any time or from time to time at the Company’s option. The net proceeds from this offering were used to make investments in middle-market companies (including investments made through our SBIC Subsidiaries) in accordance with the Company’s investment objective and strategies and for general corporate purposes. Financing costs of $2.0 million related to the 8.125% 2027 Notes have been capitalized and are being amortized over the term of the 8.125% 2027 Notes. The 8.125% 2027 Notes are listed on the NYSE under the trading symbol “SAY” with a par value of $25.00 per note
Amortization of discount on issuance																							1,200,000
Fair Value, Inputs, Level 1 [Member] | 4.35% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding fair value	72,400,000																			72,400,000		72,400,000		72,400,000	$ 72,400,000
Long-Term Debt [Member] | SBA Debentures [Member]
Borrowings [Line Items]
Debentures outstanding amount																						170,000,000
Smaller Enterprise [Member]
Borrowings [Line Items]
Tangible net	6,000,000																			6,000,000		6,000,000		6,000,000	6,000,000
Net income taxes																									2,000,000
Borrowings [Member] | 7.75% 2025 Notes [Member]
Borrowings [Line Items]
Outstanding amount	15,000,000																			$ 15,000,000		15,000,000		$ 15,000,000	$ 15,000,000
Borrowings [Member] | 4.375% 2026 Notes [Member]
Borrowings [Line Items]
Principal amount, percentage																4.375%
Long-Term Debt [Member] | SBA Debentures [Member]
Borrowings [Line Items]
Debentures outstanding amount																							214,000,000
Encina Credit Facility [Member]
Borrowings [Line Items]
Credit facility, percentage													50.00%
Credit facility balance, description																									increased the borrowings available under the Encina Credit Facility from up to $50.0 million to up to $65.0 million; (ii) changed the underlying benchmark used to compute interest under the Encina Credit Agreement from LIBOR to Term SOFR for a one-month tenor plus a 0.10% credit spread adjustment; (iii) increased the applicable effective margin rate on borrowings from 4.00% to 4.25%; (iv) extended the revolving period from October 4, 2024 to January 27, 2026; (v) extended the period during which the borrower may request one or more increases in the borrowings available under the Encina Credit Facility (each such increase, a “Facility Increase”) from October 4, 2023 to January 27, 2025, and increased the maximum borrowings available pursuant to the Encina Facility Increase from $75.0 million to $150.0 million; (vi) revised the eligibility criteria for eligible collateral loans to exclude certain industries in which an obligor or related guarantor may be involved; and (vii) amended the provisions permitting the borrower to request an extension in the Commitment Termination Date (as defined in the Encina Credit Agreement) to allow requests to extend any applicable Commitment Termination Date, rather than a one-time request to extend the original Commitment Termination Date, subject to a notice requirement.
Administrative agent fee																									$ 100,000
Line of credit facility, borrowing capacity, description																									Availability on the Encina Credit Facility was subject to a borrowing base calculation, based on, among other things, applicable advance rates (which varied from 50.0% to 75.0% of par or fair value depending on the type of loan asset) and the value of certain “eligible” loan assets included as part of the borrowing base. Funds could be borrowed at the greater of the prevailing one-month SOFR rate, plus an applicable effective margin of 4.25%.
Outstanding borrowings	$ 0		32,500,000																			23,600,000	32,500,000
Realized loss on extinguishment of debt																									$ 100,000
Interest expense																						600,000	800,000		2,200,000	2,600,000
Amortization of deferred financing cost																						$ 100,000	$ 100,000		$ 300,000	$ 300,000
Outstanding percentage rate	8.70%																			8.70%		8.70%	9.40%	8.70%	8.70%	9.40%
Borrowings [Member]
Borrowings [Line Items]
Outstanding borrowings																									$ 29,500,000	$ 32,500,000
Oak Credit Facility [Member]
Borrowings [Line Items]
Outstanding borrowings																									35,800,000
Line of credit facility maximum borrowing capacity	$ 50,000,000																			$ 50,000,000		$ 50,000,000		$ 50,000,000	50,000,000
Line of credit facility minimum drawn amount	81,900,000																			$ 81,900,000		81,900,000		$ 81,900,000	$ 81,900,000
Live Oak Credit Facility [Member]
Borrowings [Line Items]
Outstanding borrowings	$ 37,500,000		20,000,000																			37,500,000	$ 20,000,000			$ 17,300,000
Interest expense																						900,000	500,000
Amortization of deferred financing cost																						$ 100,000	$ 100,000
Outstanding percentage rate	8.20%																			8.20%		8.20%	9.00%	8.20%	8.20%	9.00%				50.00%
Line of credit facility maximum borrowing capacity																														$ 25,000,000
Commitment amount																									$ 50,000,000
Customary fee																									$ 150,000,000
Line of credit facility minimum drawn amount																														$ 12,500,000
Percentage of lender				100.00%
Credit agreement unused commitment, percentage																									0.50%
Interest expense debt																									$ 2,500,000	$ 1,400,000
Deferred financing costs	$ 300,000																			$ 300,000		$ 300,000	$ 200,000	$ 300,000	300,000	200,000
Valley Credit Facility [Member]
Borrowings [Line Items]
Credit facility		$ 25,000,000
Credit facility, percentage		38.00%
Administrative agent fee																									35,000
Outstanding borrowings																									$ 32,500,000
Interest expense																				200,000
Amortization of deferred financing cost																				$ 30,000.00
Outstanding percentage rate	1.00%																			1.00%		1.00%		1.00%	1.00%
Line of credit facility minimum drawn amount	$ 84,100,000																			$ 84,100,000		$ 84,100,000		$ 84,100,000	$ 84,100,000
Floating rate per annum percentage		0.75%																							2.85%
Securitized credit facility		$ 85,000,000
Other percentage		0.50%
Financing costs																									$ 1,400,000
SBA Debentures [Member]
Borrowings [Line Items]
Outstanding borrowings			170,000,000																						170,000,000
7.75% 2025 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						0	5,000,000		2,400,000	5,000,000
Amortization of deferred financing																									20,000.00	40,000.00
Interest expense																									100,000	300,000
6.25% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						15,000,000	15,000,000		15,000,000	15,000,000
Outstanding fair value	14,800,000																			14,800,000		14,800,000		14,800,000	14,800,000
4.375% 2026 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						175,000,000	175,000,000				175,000,000
4.375% 2026 Notes [Member] | Level 3 Liability [Member]
Borrowings [Line Items]
Outstanding fair value	$ 173,800,000																			$ 173,800,000		173,800,000		$ 173,800,000	173,800,000
4.35% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																					75,000,000	75,000,000	75,000,000
6.00% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						105,500,000	105,500,000
7.00% 2025 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						900,000	12,000,000
8.00% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						46,000,000	46,000,000		46,000,000	46,000,000
Amortization of deferred financing																									300,000	300,000
Interest expense																									$ 2,800,000	2,800,000
8.125% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding borrowings																						$ 60,400,000	$ 60,400,000
1940 Act [Member]
Borrowings [Line Items]
Employ leverage, percentage																									150.00%
SBIC [Member]
Borrowings [Line Items]
Additional long-term capital																															$ 175,000,000	$ 175,000,000
Investment percentage	25.00%																			25.00%		25.00%		25.00%	25.00%
SBIC II LP [Member]
Borrowings [Line Items]
Financing costs																									$ 6,000,000
Aggregate total of equity capital amount	$ 87,500,000																			$ 87,500,000		$ 87,500,000		$ 87,500,000	87,500,000
Debentures outstanding amount																									131,000,000
Amortization of deferred financing																						200,000
SBIC III LP [Member]
Borrowings [Line Items]
Financing costs																									400,000
Aggregate total of equity capital amount	87,500,000																			87,500,000		87,500,000		87,500,000	87,500,000
Debentures outstanding amount																									39,000,000
Minimum [Member]
Borrowings [Line Items]
Asset coverage ratio																																	150.00%
Credit facility													$ 12,500,000
Minimum [Member] | 6.00% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding fair value	105,500,000		100,700,000																	105,500,000	100,700,000	105,500,000		105,500,000	105,500,000		100,700,000
Fair value			14,200,000																		14,200,000						14,200,000
Minimum [Member] | 8.00% 2027 Notes [Member]
Borrowings [Line Items]
Net proceeds amount							$ 5,800,000
Minimum [Member] | Encina Credit Facility [Member]
Borrowings [Line Items]
Outstanding borrowings																									$ 8.8
Minimum [Member] | Live Oak Credit Facility [Member]
Borrowings [Line Items]
Line of credit facility minimum drawn amount				$ 50,000,000
Floating rate per annum percentage																									3.50%
Maximum [Member]
Borrowings [Line Items]
Credit facility													$ 25,000,000
Maximum [Member] | SBA Debentures [Member]
Borrowings [Line Items]
Debentures outstanding amount																									$ 170,000,000
Maximum [Member] | 6.00% 2027 Notes [Member]
Borrowings [Line Items]
Outstanding fair value	$ 104,400,000		105,500,000																	$ 104,400,000	105,500,000	104,400,000		$ 104,400,000	$ 104,400,000		105,500,000
Fair value			$ 15,000,000																		$ 15,000,000						$ 15,000,000
Maximum [Member] | Encina Credit Facility [Member]
Borrowings [Line Items]
Outstanding borrowings																										$ 9.7
Maximum [Member] | Live Oak Credit Facility [Member]
Borrowings [Line Items]
Line of credit facility minimum drawn amount				$ 75,000,000
Floating rate per annum percentage																									4.25%
Securities Financing Transaction, Cost [Member] | 4.375% 2026 Notes [Member]
Borrowings [Line Items]
Deferred financing costs																						$ 100,000

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- Definition

Additional long-term capital.

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No definition available.

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- Definition

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No definition available.

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Represents the equity contribution to a wholly owned subsidiary.

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No definition available.

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The debt par value is the amount of money that bond issuers promise to repay bondholders at the maturity date of the bond.

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Integral multiples of excess.

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