Note 3 - Investments

9 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Investment [Text Block]

3. Investments

Available-for-sale securities

The Company’s portfolio of available-for-sale marketable securities consists of the following:

	September 30, 2022
	Amortized		Gross unrealized				Estimated
(In thousands)	Cost		Gains		Losses		Fair Value
Available-for-sale securities, current portion
U.S. government securities	$	13,102	$	-	$	48	$	13,054
Corporate debt securities		20,112		-		18		20,094
Other debt securities		1,444		-		9		1,435
Total short-term		34,658		-		75		34,583
Available-for-sale securities, long-term
Other debt securities		490		-		-		490
Total marketable securities	$	35,148	$	-	$	75	$	35,073

	Amortized		Estimated
(In thousands)	Cost		Fair Value
Due in one year or less	$	34,658	$	34,583
Due after one year through five years		490		490
Total	$	35,148	$	35,073

There were no outstanding available-for-sale marketable securities as of December 31, 2021.

Equity investments

The Company periodically invests in non-marketable equity securities of private companies without a readily determinable fair value to promote business and strategic objectives. These securities included Series A-1 and A-2 Preferred Stock in iVexSol, Inc. with a fair value of $4.1 million and $3.4 million as of September 30, 2022 and December 31, 2021, respectively, and Series E Preferred Stock in PanTHERA CryoSolutions, Inc. with a fair value of $995,000 as of September 30, 2022 and December 31, 2021.