Note 4 - Marketable Securities

12 Months Ended

Dec. 31, 2024

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4. MARKETABLE SECURITIES

At December 31, 2024 and 2023, the fair value of marketable securities, which were all classified as available for sale, included the following (in thousands): 

	December 31, 2024
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Level 2:
U.S. treasury debt securities	$	37,726	$	24	$	(2	)	$	37,748
Total	$	37,726	$	24	$	(2	)	$	37,748

	December 31, 2023
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Level 2:
U.S. treasury debt securities	$	30,791	$	10	$	(1	)	$	30,800
Total	$	30,791	$	10	$	(1	)	$	30,800

The carrying amounts of the marketable securities reported in the Consolidated Balance Sheets approximate fair value based on quoted market prices or alternative pricing sources and models utilizing market observable inputs. As of December 31, 2024 and 2023, the Company did not recognize any allowance for credit impairments on its available for sale debt securities. All investments in marketable securities are classified as current assets on the Consolidated Balance Sheets because the underlying securities mature within one year from the balance sheet date.