Note D - Marketable Equity Securities (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Marketable Securities [Table Text Block]

		March 31, 2026				December 31, 2025
		(in thousands)
Fair market value		$	40,756			$	48,488
Cost			22,104				28,211
Unrealized gain		$	18,652			$	20,277

Unrealized Gain (Loss) on Investments [Table Text Block]

		March 31, 2026				December 31, 2025
		(in thousands)
Gross unrealized gains		$	19,591			$	21,362
Gross unrealized losses			(939	)			(1,085	)
Net unrealized gain		$	18,652			$	20,277

Schedule of Realized Gain (Loss) [Table Text Block]

		Three Months Ended March 31,
		2026				2025
		(in thousands)
Sales Proceeds		$	11,663			$	1
Cost of securities sold			6,106				4
Realized gains / (losses)		$	5,557			$	(3	)