Note 5 - Marketable Securities

3 Months Ended

Mar. 31, 2023

Notes to Financial Statements

Cash, Cash Equivalents, and Marketable Securities [Text Block]

NOTE 5: MARKETABLE SECURITIES

The following is a summary of available-for-sale marketable securities:

	March 31, 2023 (Unaudited)
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale - matures within one year:
Corporate bonds	$	23,397	$	—	$	(1,517	)	$	21,880
Available-for-sale - matures after one year through four years:
Corporate bonds		88,934		25		(4,697	)		84,262
Total
	$	112,331	$	25	$	(6,214	)	$	106,142

	December 31, 2022
	Amortized cost		Gross unrealized gains		Gross unrealized losses			Fair value
Available-for-sale - matures within one year:
Corporate bonds	$	17,552	$	—	$	(1,330	)	$	16,222
Available-for-sale - matures after one year through five years:
Corporate bonds		101,355		38		(5,535	)		95,858
Total	$	118,907	$	38	$	(6,865	)	$	112,080

The following table presents gross unrealized losses and fair values for those investments that were in an unrealized loss position as of March 31, 2023, and December 31, 2022, and the length of time that those investments have been in a continuous loss position:

	Less than 12 months					12 months or greater
	Fair value		Gross unrealized loss			Fair value		Gross unrealized loss
As of March 31, 2023 (unaudited)	$	36,115	$	(877	)	$	64,211	$	(5,337	)
As of December 31, 2022	$	58,706	$	(1,885	)	$	48,539	$	(4,980	)

As of March 31, 2023, the allowance for credit losses was not material.

The following table presents gross realized gains and losses from sale of available-for-sale marketable securities:

	Three months ended March 31,
	2023 (unaudited)		2022 (unaudited)
Gross realized gains from sale of available-for-sale marketable securities	$	92	$	—
Gross realized losses from sale of available-for-sale marketable securities	$	—	$	—