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Note 6 - Fair Value (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

		December 31, 2023
		Level 1				Level 2				Level 3				Total
		(In thousands)
Debt investments		$	—			$	—			$	670,172			$	670,172
Warrant investments			—				1,619				22,975				24,594
Other investments			—				—				6,430				6,430
Equity investments			608				—				7,281				7,889
Total investments		$	608			$	1,619			$	706,858			$	709,085

		December 31, 2022
		Level 1				Level 2				Level 3				Total
		(In thousands)
Debt investments		$	—			$	—			$	686,458			$	686,458
Warrant investments			—				3,567				26,145				29,712
Other investments			—				—				1,300				1,300
Equity investments			140				—				2,416				2,556
Total investments		$	140			$	3,567			$	716,319			$	720,026

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

December 31, 2023
		Fair			Valuation Techniques/		Unobservable				Weighted
Investment Type		Value			Methodologies		Input		Range		Average(1)
					(Dollars in thousands, except per share data)
Debt investments		$	617,529		Discounted Expected Future Cash Flows		Hypothetical Market Yield		11% – 24%			15	%
			52,643		Multiple Probability Weighted Cash Flow Model		Probability Weighting		20% - 100%			50	%
Warrant investments			22,913		Black-Scholes Valuation Model		Price Per Share		0.000 –1,89999		$	64.95
							Average Industry Volatility		25%			25	%
							Marketability Discount		0% – 20%			18	%
							Estimated Time to Exit (in years)		1 to 5			3
			62		Expected Proceeds		Price Per Share		$0.25		$	0.25
Other investments			6,430		Multiple Probability Weighted Cash Flow Model		Discount Rate		25%			25	%
							Probability Weighting		30% – 100%			81	%
Equity investments			7,281		Last Equity Financing		Price Per Share		0.566 –215.0303		$	17.15
Total Level 3 investments		$	706,858

December 31, 2022
		Fair			Valuation Techniques/		Unobservable				Weighted
Investment Type		Value			Methodologies		Input		Range		Average(1)
					(Dollars in thousands, except per share data)
Debt investments		$	669,617		Discounted Expected Future Cash Flows		Hypothetical Market Yield		3% – 22%			14	%
			16,545		Multiple Probability Weighted Cash Flow Model		Probability Weighting		10% - 75%			31	%
			296		Convertible Note Analysis		Price Per Share		$168.93		$	168.93
Warrant investments			26,145		Black-Scholes Valuation Model		Price Per Share		0.000 –1,89999		$	58.52
							Average Industry Volatility		28%			28	%
							Marketability Discount		20%			20	%
							Estimated Time to Exit (in years)		1 to 5			3
Other investments			1,300		Multiple Probability Weighted Cash Flow Model		Discount Rate		25%			25	%
							Probability Weighting		100%			100	%
Equity investments			2,416		Last Equity Financing		Price Per Share		$1.00– $215.03		$	26.93
Total Level 3 investments		$	716,319

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Year ended December 31, 2023
		Debt				Warrant				Equity				Other
		Investments				Investments				Investments				Investments				Total
		(In thousands)
Level 3 assets, beginning of period		$	686,458			$	26,145			$	2,416			$	1,300			$	716,319
Purchase of investments			217,285				—				1,260				144				218,689
Warrants and equity received and classified as Level 3			—				2,763				89				—				2,852
Principal payments received on investments			(151,777	)			—				—				(516	)			(152,293	)
Payment-in-kind interest on investments			8,433				—				—				—				8,433
Proceeds from sale of investments			(9,565	)			(1,495	)			(6	)			—				(11,066	)
Net realized (loss) gain on investments			(29,146	)			1,003				(121	)			—				(28,264	)
Unrealized depreciation included in earnings			(35,564	)			(5,436	)			(2,496	)			(652	)			(44,148	)
Transfer out of Level 3			(5,000	)			—				(111	)			—				(5,111	)
Transfer out of debt and warrant investments			(12,399	)			(5	)			6,250				6,154				—
Other			1,447				—				—				—				1,447
Level 3 assets, end of period		$	670,172			$	22,975			$	7,281			$	6,430			$	706,858

		Year ended December 31, 2022
		Debt				Warrant				Equity				Other
		Investments				Investments				Investments				Investments				Total
		(In thousands)
Level 3 assets, beginning of period		$	437,317			$	19,837			$	203			$	200			$	457,557
Purchase of investments			421,372				—				606				—				421,978
Warrants and equity received and classified as Level 3			—				5,664				8				—				5,672
Principal payments received on investments			(95,558	)			—				—				(313	)			(95,871	)
Proceeds from sale of investments			(49,371	)			(464	)			—				—				(49,835	)
Net realized (loss) gain on investments			(8,221	)			264				—				(1,137	)			(9,094	)
Unrealized (depreciation) appreciation included in earnings			(10,044	)			2,215				(401	)			1,350				(6,880	)
Transfer out of Level 3			—				(1,371	)			—				—				(1,371	)
Transfer out of debt investments			(3,200	)			—				2,000				1,200				—
Other			(5,837	)			—				—				—				(5,837	)
Level 3 assets, end of period		$	686,458			$	26,145			$	2,416			$	1,300			$	716,319

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- Definition

Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

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Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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