Note E - Marketable Securities and Time Deposits (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Debt Securities, Available-for-sale [Table Text Block]

	Amortized cost							Unrealized losses, net		Fair value
	September 30, 2021		December 31, 2020		September 30, 2021			December 31, 2020		September 30, 2021		December 31, 2020
	(Unaudited)		(Audited)		(Unaudited)			(Audited)		(Unaudited)		(Audited)
Short-term deposits		25,745	$	22,241	$	-		$	-		25,745	$	22,241
U.S. GSE securities		718		1,149		8			11		726		1,160
Corporate obligations		86,036		87,319		(128	)		349		85,908		87,668
	$	112,499	$	110,709	$	(120	)	$	360	$	112,379	$	111,069

Investments Classified by Contractual Maturity Date [Table Text Block]

			Unrealized gains (losses)
	Amortized cost		Gains		Losses			Fair value
Due in one year or less	$	27,228	$	21	$	(50	)	$	27,200
Due after one year to five years		59,526		209		(300	)		59,434
	$	87,754	$	230	$	(350	)	$	86,634