Note 14 - Financial Highlights (Tables)

12 Months Ended

Dec. 31, 2025

Investment Company, Financial Highlights [Table Text Block]

	*Year ended December 31,*
	*2025*				*2024*				*2023*				*2022*				*2021*
	(In thousands, except share and per share data)
Per share data:
Net asset value at beginning of period	$	8.43			$	9.71			$	11.47			$	11.56			$	11.02
Net investment income		1.05				1.32				1.98				1.46				1.41
Realized loss on investments		(1.37	)			(0.96	)			(0.97	)			(0.38	)			(0.18	)
Unrealized appreciation (depreciation) on investments		0.26				(0.52	)			(1.57	)			(0.22	)			0.16
Net (decrease) increase in net assets resulting from operations		(0.06	)			(0.16	)			(0.56	)			0.86				1.39
Distributions declared⁽¹⁾		(1.32	)			(1.37	)			(1.37	)			(1.28	)			(1.25	)
From net investment income		(1.32	)			(1.37	)			(1.37	)			(1.28	)			(1.25	)
From net realized gain on investments		—				—				—				—				—
Return of capital		—				—				—				—				—
Other ⁽²⁾		(0.07	)			0.25				0.17				0.33				0.40
Net asset value at end of period	$	6.98			$	8.43			$	9.71			$	11.47			$	11.56
Per share market value, beginning of period	$	8.99			$	13.17			$	11.60			$	15.92			$	13.24
Per share market value, end of period	$	6.45			$	8.99				13.17				11.60				15.92
Total return based on a market value ⁽³⁾		(13.6	)%			(21.3	)%			25.3	%			(19.3	)%			29.7	%
Shares outstanding at end of period		45,613,815				39,875,847				33,367,389				27,753,373				21,217,460
Ratios to average net assets:
Expenses without incentive fees (4)		16.2	%			15.1	%			14.1	%			11.5	%			10.5	%
Incentive fees (4)		—				0.1	%			0.9	%			2.6	%			3.1	%
Net expenses (4)		16.2	%			15.2	%			15.0	%			14.1	%			13.6	%
Net investment income with incentive fees		14.2	%			14.4	%			18.2	%			12.1	%			12.2	%
Ratios, without waivers, to average net assets:
Expenses without incentive fees		16.2	%			15.1	%			14.1	%			11.5	%			10.5	%
Incentive fees		—	%			0.1	%			0.9	%			2.6	%			3.1	%
Net expenses		16.2	%			15.2	%			15.0	%			14.1	%			13.6	%
Net investment income with incentive fees		14.2	%			14.4	%			18.2	%			12.1	%			12.2	%
Net assets at the end of the period	$	318,502			$	336,183			$	323,981			$	318,448			$	245,335
Average net asset value	$	311,928			$	332,719			$	336,915			$	299,182			$	231,215
Average debt per share	$	10.43			$	12.42			$	13.93			$	13.70			$	11.27
Portfolio turnover ratio		30.0	%	(4)		15.6	%	(4)		17.2	%	(4)		14.6	%	(4)		45.4	%	(4)

	*Year ended December 31,*
	*2020*				*2019*				*2018*				*2017*				*2016*
	(In thousands, except share and per share data)
Per share data:
Net asset value at beginning of period	$	11.83			$	11.64			$	11.72			$	12.09			$	13.85
Net investment income		1.18				1.52				1.20				1.07				1.48
Realized (loss) gain		(0.84	)			(0.31	)			0.06				(1.84	)			(0.67	)
Unrealized appreciation (depreciation) on investments		0.02				0.24				(0.13	)			1.60				(1.24	)
Net increase (decrease) in net assets resulting from operations		0.36				1.45				1.13				0.83				(0.43	)
Net dilution from issuance of common stock		—				—				—				—				—
Distributions declared (1)		(1.25	)			(1.20	)			(1.20	)			(1.20	)			(1.34	)
From net investment income		(1.25	)			(1.20	)			(1.20	)			(1.20	)			(1.34	)
From net realized gain on investments		—				—				—				—				—
Return of capital		—				—				—				—				—
Net accretion from repurchase of common stock		—				—				—				—				0.01
Other (2)		0.08				(0.06	)			(0.01	)			—				—
Net asset value at end of period	$	11.02			$	11.83			$	11.64			$	11.72			$	12.09
Per share market value, beginning of period	$	12.93			$	11.25			$	11.22			$	10.53			$	11.73
Per share market value, end of period	$	13.24			$	12.93			$	11.25				11.22				10.53
Total return based on a market value (3)		12.1	%			25.6	%			11.0	%			17.9	%			1.5	%
Shares outstanding at end of period		19,286,356				15,563,290				11,535,129				11,520,406				11,510,424
Ratios to average net assets:
Expenses without incentive fees (5)		10.0	%			10.8	%			10.4	%			8.6	%			9.2	%
Incentive fees (5)		2.6				3.2				2.4	%			1.2	%			1.4	%
Net expenses (5)		12.6	%			14.0	%			12.8	%			9.8	%			10.6	%
Net investment income with incentive fees (5)		10.4	%			12.8	%			10.3	%			9.0	%			11.4	%
Ratios, without waivers, to average net assets:
Expenses without incentive fees (5)		10.0	%			10.8	%			10.4	%			8.6	%			9.2	%
Incentive fees (5)		2.6	%			4.4	%			3.3	%			1.3	%			1.4	%
Net expenses (5)		12.6	%			15.2	%			13.7	%			9.9	%			10.6	%
Net investment income with incentive fees (5)		10.4	%			11.6	%			9.4	%			8.9	%			11.4	%
Net assets at the end of the period	$	212,597			$	184,055			$	134,257			$	135,075			$	139,192
Average net asset value	$	199,302			$	160,008			$	134,364			$	137,293			$	150,612
Average debt per share	$	9.97			$	10.05			$	8.62			$	6.60			$	8.91
Portfolio turnover ratio		38.7	%	(4)		82.0	%	⁽⁶⁾		50.4	%	⁽⁶⁾		79.4	%	⁽⁶⁾		27.1	%	⁽⁶⁾