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Note C - Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

Gain (Loss) on Securities [Table Text Block]

		Years ended December 31,
		2025				2024
Net gains recognized during the year on marketable securities		$	34,359			$	26,989
Less: Net losses realized during the year on marketable securities sold during the period			1,507				---
Net unrealized gains recognized during the reporting year on marketable securities still held at the reporting date		$	35,866			$	26,989

Marketable Securities [Table Text Block]

		Cost				Fair Value				Unrealized Gain
Equity Securities:
Equity and other mutual funds		$	713,120			$	777,963			$	64,843
Other short-term investments:
U.S. Treasury Bills (original maturities > 3 months)			6,544,683				6,544,683				---
Total marketable securities		$	7,257,803			$	7,322,646			$	64,843

		Cost				Fair Value				Unrealized Gain
Equity Securities:
Equity and other mutual funds		$	634,705			$	663,682			$	28,977
Other short-term investments:
Fixed income Certificates of Deposit (original maturities > 3 months)			570,000				570,000				---
U.S. Treasury Bills (original maturities > 3 months)			6,288,943				6,288,943				---
Total other short-term investments		$	6,858,943			$	6,858,943			$	---
Total marketable securities		$	7,493,648			$	7,522,625			$	28,977

X

- Definition

Tabular disclosure of realized and unrealized gain (loss) on investment in security.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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- Definition

Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets.

+ References

No definition available.

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X

- References

No definition available.

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