Note D - Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Marketable Securities [Table Text Block]

					Cumulative
					Unrealized
	Fair Value		Basis		(Loss) Gain
IronNet Securities:			March 31, 2023
98,750 shares of common stock	$	35	$	2,128	$	(2,093	)
Equity funds and other securities		16,852		17,024		(172	)
	$	16,887	$	19,152	$	(2,265	)

IronNet Securities:	December 31, 2022
198,750 shares of common stock	$	46	$	4,273	$	(4,227	)
Equity funds and other securities		16,539		17,024		(485	)
	$	16,585	$	21,297	$	(4,712	)