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Note 7 - Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

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

		June 30, 2025 (Unaudited)
		Amortized cost				Gross unrealized gains				Gross unrealized losses				Fair value
Available-for-sale - matures within one year:
Corporate bonds		$	50,425			$	118			$	(424	)		$	50,119
Available-for-sale - matures after one year through three years:
Corporate bonds			75,632				322				(505	)			75,449
Total
		$	126,057			$	440			$	(929	)		$	125,568

		December 31, 2024
		Amortized cost				Gross unrealized gains				Gross unrealized losses				Fair value
Available-for-sale - matures within one year:
Corporate bonds		$	61,113			$	41			$	(146	)		$	61,008
Available-for-sale - matures after one year through three years:
Corporate bonds			83,491				221				(1,603	)			82,109
Total		$	144,604			$	262			$	(1,749	)		$	143,117

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 June 30, 2025 (unaudited)		$	16,023			$	(35	)		$	31,739			$	(894	)
As of December 31, 2024		$	28,762			$	(160	)		$	61,996			$	(1,589	)

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

		Six months ended June 30,								Three months ended June 30,
		2025				2024				2025				2024
		(unaudited)				(unaudited)				(unaudited)				(unaudited)
Gross realized gains from sale of available-for-sale marketable securities		$	16			$	15			$	16			$	6
Gross realized losses from sale of available-for-sale marketable securities		$	—			$	(5	)		$	—			$	—

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
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
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+ References

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- Definition

Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

+ References

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-Section 50
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