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Note 7 - Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

		September 30, 2024 (Unaudited)
		Amortized cost				Gross unrealized gains				Gross unrealized losses				Fair value
Available-for-sale - matures within one year:
Corporate bonds		$	64,156			$	74			$	(318	)		$	63,912
Available-for-sale - matures after one year through three years:
Corporate bonds			79,824				651				(1,509	)			78,966
Total
		$	143,980			$	725			$	(1,827	)		$	142,878

		December 31, 2023
		Amortized cost				Gross unrealized gains				Gross unrealized losses				Fair value
Available-for-sale - matures within one year:
Corporate bonds		$	27,690			$	4			$	(243	)		$	27,451
Available-for-sale - matures after one year through three years:
Corporate bonds			108,700				278				(3,734	)			105,244
Total		$	136,390			$	282			$	(3,977	)		$	132,695

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

		Less than 12 months								12 months or greater
		Fair value				Gross unrealized loss				Fair value				Gross unrealized loss
As of September 30, 2024 (unaudited)		$	4,300			$	(30	)		$	63,822			$	(1,797	)
As of December 31, 2023		$	18,193			$	(49	)		$	86,643			$	(3,928	)

Schedule of Realized Gain (Loss) [Table Text Block]

		Nine months ended September 30,								Three months ended September 30,
		2024				2023				2024				2023
		(unaudited)				(unaudited)				(unaudited)				(unaudited)
Gross realized gains from sale of available-for-sale marketable securities		$	19			$	92			$	4			$	—
Gross realized losses from sale of available-for-sale marketable securities		$	(5	)		$	(24	)		$	—			$	(8	)

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Name Accounting Standards Codification
-Section 55
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+ References

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