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

12 Months Ended

Dec. 31, 2023

Available-for-sale Debt Securities [Text Block]

NOTE 3. U.S. TREASURY SECURITIES, AVAILABLE-FOR-SALE

As of December 31, 2023, the Company held U.S. Treasury securities with a fair value of approximately $148.8 million that were classified as available-for-sale. U.S. Treasury securities are held primarily to satisfy collateral requirements of its repurchase and derivative counterparties.

The amortized cost, gross unrealized holding gains and losses, and fair value of available-for-sale investments as of December 31, 2023 are as follows:

(in thousands)
			*Gross*		*Gross*
	*Amortized*		*Unrealized*		*Unrealized*		*Fair*
	*Cost*		*Gains*		*Losses*		*Value*
U.S. Treasury Bill, 1/2/2024 Maturity	$	49,671	$	9	$	-	$	49,680
U.S. Treasury Bill, 2/15/2024 Maturity		49,992		8		-		50,000
U.S. Treasury Bill, 4/30/2024 Maturity		49,140		-		-		49,140
	$	148,803	$	17	$	-	$	148,820

The Company had no securities classified as available-for-sale that were in an unrealized loss position as of December 31, 2023, 2022 and 2021.