Note 3 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	As of September 30, 2022
	Adjusted		Unrealized		Unrealized		Market
	Cost		Gains		Losses		Value
Level 1:
Money Market Funds	$	3,382	$	-	$	-	$	3,382
U.S. Treasury securities in short-term investments		19,803		62		-		19,865
Total Financial Assets	$	23,185	$	62	$	-	$	23,247

	As of December 31, 2021
	Adjusted		Unrealized		Unrealized			Market
	Cost		Gains		Losses			Value
Level 1:
Money Market Funds	$	1,670	$	-	$	-		$	1,670
U.S. Treasury securities in short-term investments		29,989		-		(6	)		29,983
Total Financial Assets	$	31,659	$	-	$	(6	)	$	31,653