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Note 4 - Investments (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Investment Holdings, Schedule of Investments [Table Text Block]

		March 31, 2023								December 31, 2022
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Investments
Debt		$	703,781			$	684,554			$	701,074			$	686,458
Warrants			14,735				25,658				14,790				29,712
Other			1,200				1,300				1,200				1,300
Equity			4,446				3,800				4,184				2,556
Total investments		$	724,162			$	715,312			$	721,248			$	720,026

		March 31, 2023								December 31, 2022
		Cost				Fair Value				Cost				Fair Value
		(In thousands)
Life Science
Biotechnology		$	187,970			$	186,981			$	193,372			$	195,006
Medical Device			129,102				131,823				132,803				135,960
Technology
Communications			22,913				26,168				22,892				26,176
Consumer-Related			107,802				99,140				121,961				114,050
Data Storage			476				1,302				476				1,316
Internet and Media			329				1,583				329				1,159
Networking			10,111				9,984				11,831				11,710
Power Management			1,585				2,808				1,585				2,610
Semiconductors			57				—				56				—
Software			145,706				143,680				120,157				118,716
Sustainability
Energy Efficiency			8				27				8				27
Other Sustainability			84,753				83,734				84,633				85,524
Healthcare Information and Services
Diagnostics			9,862				9,868				9,851				9,858
Other			6,990				1,414				7,559				3,870
Software			16,498				16,800				13,735				14,044
Total investments		$	724,162			$	715,312			$	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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