Note L - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Balance as of			Fair value measurements
Description		September 31, 2021			Level 1		Level 2		Level 3
Assets
Cash equivalents
Money market mutual funds		$	2,332		$	2,332	$	-	$	-
Short-term marketable securities
U.S. GSE securities		$	-		$	-	$	-	$	-
Corporate debt securities		$	27,200		$	-	$	27,200	$	-
Long-term marketable securities
U.S. GSE securities		$	727		$	-	$	727	$	-
Corporate debt securities		$	58,707		$	-	$	58,707	$	-
Liabilities
Earn-out liability		$	1,945		$	-	$	-	$	1,945

	Balance as of		Fair value measurements
Description	December 31, 2020		Level 1		Level 2		Level 3
Assets
Cash equivalents
Money market mutual funds	$	962	$	962	$	-	$	-
Short-term marketable securities
U.S. GSE securities	$	425	$	-	$	425	$	-
Corporate debt securities	$	27,949	$	-	$	27,949	$	-
Long-term marketable securities
U.S. GSE securities	$	735	$	-	$	735	$	-
Corporate debt securities	$	59,719	$	-	$	59,719	$	-
Liabilities
Earn-out liability	$	1,945	$	-	$	-	$	1,945