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Note 4 - Investments (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Investment Holdings, Schedule of Investments [Table Text Block]

		September 30, 2023								December 31, 2022
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Investments
Debt		$	716,655			$	679,838			$	701,074			$	686,458
Warrants			15,783				26,189				14,790				29,712
Other			7,354				7,254				1,200				1,300
Equity			15,022				15,772				4,184				2,556
Total investments		$	754,814			$	729,053			$	721,248			$	720,026

		September 30, 2023								December 31, 2022
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Life Science
Biotechnology		$	158,953			$	139,935			$	193,372			$	195,006
Medical Device			140,172				139,039				132,803				135,960
Technology
Communications			21,057				24,317				22,892				26,176
Consumer-Related			110,245				106,559				121,961				114,050
Data Storage			417				1,070				476				1,316
Internet and Media			329				1,615				329				1,159
Networking			6,671				6,558				11,831				11,710
Power Management			1,585				2,901				1,585				2,610
Semiconductors			56				—				56				—
Software			164,903				161,258				120,157				118,716
Sustainability
Energy Efficiency			111				36				8				27
Other Sustainability			89,395				83,476				84,633				85,524
Healthcare Information and Services
Diagnostics			9,971				9,939				9,851				9,858
Other			102				1,379				7,559				3,870
Software			50,847				50,971				13,735				14,044
Total investments		$	754,814			$	729,053			$	721,248			$	720,026

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//1943274/2147480524/946-210-50-6

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//1943274/2147480524/946-210-50-6

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//1943274/2147480524/946-210-50-6

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//1943274/2147480524/946-210-50-6

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//1943274/2147480524/946-210-50-6

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//1943274/2147480524/946-210-50-1

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X

- References

No definition available.

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