Note 6 - Fair Value (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

ASSETS		LEVEL 1 QUOTED PRICES				LEVEL 2 OTHER SIGNIFICANT OBSERVABLE INPUTS				LEVEL 3 SIGNIFICANT OBSERVABLE INPUTS
Common Stocks
Advanced Materials		$	—			$	—			$	141,197
Total Common Stocks			—				—				141,197
Preferred Stocks
Total Preferred Stocks			—				—				—
Convertible Notes
Medical Devices			—				—				3,535
Total Convertible Notes			—				—				3,535
Mutual Funds			3,903				—				—
Total		$	3,903			$	—			$	144,732

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

INVESTMENTS AT FAIR VALUE USING SIGNIFICANT UNOBSERVABLE INPUTS (LEVEL 3)		BALANCE AS OF 12/31/25				NET PURCHASES/ CONVERSIONS				NET SALES/ CONVERSIONS				NET REALIZED GAINS/ (LOSSES)				NET UNREALIZED APPRECIATION (DEPRECIATION)⁽¹⁾				*TRANSFERS IN (OUT) OF LEVEL 3*				BALANCE AS OF 06/30/26
Common Stocks
Advanced Materials		$	167,642			$	—			$	—			$	—			$	(26,445	)		$	—			$	141,197
Total Common Stocks			167,642				—				—				—				(26,445	)			—				141,197
Preferred Stocks
Total Preferred Stocks			—				—				—				—				—				—				—
Convertible and Non-Convertible Notes
Medical Devices			1,523				—				—				—				2,012				—				3,535
Total Convertible and Non-Convertible Notes			1,523				—				—				—				2,012				—				3,535
Total		$	169,165			$	—			$	—			$	—			$	(24,433	)		$	—				144,732

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

		FAIR VALUE AT 06/30/26			*VALUATION TECHNIQUES*	*UNOBSERVABLE INPUTS*	RANGE (WEIGHTED AVG.)⁽¹⁾
Direct venture capital investments: Advanced Materials		$	0.1M		Market Comparable Companies Option Pricing Model	Revenue Multiple⁽²⁾ Years to Maturity⁽²⁾ Volatility⁽²⁾ Risk-Free Rate⁽²⁾ Discount for Lack of Marketability⁽³⁾	0.8x – 1.0x (0.9x) 5 years (5 years) 50.0% (50%) 4.19% (4.19%) 22.8% (22.8%)
Direct venture capital investments: Automotive		$	0.0M		Liquidation Value	Market Value of Invested Capital⁽²⁾	$0 ($0)
Direct venture capital investments: Medical Devices		$	0.0M		Cash Value Market Comparable Companies Market Comparable Transactions	Revenue Multiple⁽²⁾ Risk Free Rate⁽²⁾ Going Concern Probability⁽¹⁾ Volatility⁽²⁾	0.3x – 0.5x (0.4x) 4.15% (4.15%) 5% (5%) 55% (55%)
Direct venture capital investments: Semiconductor Equipment		$	0.0M		Recent Transactions	Equity Proceeds from Private Transactions⁽²⁾	$0 ($0)

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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