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Note 6 - Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Marketable Securities [Table Text Block]

		December 31, 2023
(in thousands)		Amortized Cost				Unrealized Gains				Unrealized Losses				Estimated Fair Value
Marketable securities
Corporate, municipal debt and treasury securities		$	5,113			$	118			$	(1	)		$	5,230

Investments Classified by Contractual Maturity Date [Table Text Block]

		December 31, 2023								December 31, 2022
(in thousands)		Amortized Cost				Fair Value				Amortized Cost				Fair Value
Due within one year		$	1,506			$	1,556			$	1,594			$	1,602
Due after one year through three years			3,607				3,674				3,356				3,371
Total		$	5,113			$	5,230			$	4,950			$	4,973

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- Definition

Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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

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