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Note 4 - Investments (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Investment Holdings, Schedule of Investments [Table Text Block]

		September 30, 2024								December 31, 2023
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Investments
Debt		$	654,127			$	633,284			$	721,231			$	670,172
Warrants			17,292				18,735				16,526				24,594
Other			36,651				17,944				6,982				6,430
Equity			25,162				14,037				14,443				7,889
Total investments		$	733,232			$	684,000			$	759,182			$	709,085

		September 30, 2024								December 31, 2023
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Life Science
Biotechnology		$	126,867			$	106,865			$	145,544			$	117,781
Medical Device			185,751				179,092				147,064				145,019
Technology
Communications			13,577				15,596				19,192				22,188
Consumer-Related			74,381				54,505				105,669				101,327
Data Storage			417				409				417				418
Internet and Media			329				984				329				1,582
Networking			10,064				9,818				5,451				5,297
Power Management			1,585				2,700				1,585				2,700
Semiconductors			45				—				45				—
Software			136,309				132,951				164,133				160,749
Sustainability
Energy Efficiency			9,812				9,712				111				13
Other Sustainability			66,501				66,163				98,906				80,370
Healthcare Information and Services
Diagnostics			16,692				14,114				19,735				19,701
Other			39,511				40,186				102				1,366
Software			51,391				50,905				50,899				50,574
Total investments		$	733,232			$	684,000			$	759,182			$	709,085

X

- Definition

Tabular disclosure of data and information required in the supplementary schedule applicable to management investment companies listing holdings of unaffiliated investments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-6

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478795/946-210-50-1

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X

- References

No definition available.

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