Note 3 - U.S. Treasury Securities, Available-for-sale (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

(in thousands)
			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
U.S. Treasury Bills maturing 1/2/2024 and 2/15/2024	$	98,310	$	16	$	-	$	98,326