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Note 4 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

		Fair Value Measurements as of December 31, 2024 (000's):
		Quoted Prices				Significant
		in Active				Other				Significant
		Markets for				Observable				Unobservable
		Identical Assets				Inputs				Inputs
		(Level 1)				(Level 2)				(Level 3)				Fair Value
Assets
Corporate bonds		$	—			$	44,963			$	—			$	44,963
Certificates of deposit			—				15,269				—				15,269
Commercial paper			12,084				—				—				12,084
U.S. government treasuries			4,399				—				—				4,399
Asset-backed securities			—				6,524				—				6,524
Money market funds (cash equivalents)			23,880				—				—				23,880
Total assets		$	40,363			$	66,756			$	—			$	107,119
		Fair Value Measurements as of December 31, 2023 (000's):
		Quoted Prices				Significant
		in Active				Other				Significant
		Markets for				Observable				Unobservable
		Identical Assets				Inputs				Inputs
		(Level 1)				(Level 2)				(Level 3)				Fair Value
Assets
Corporate bonds		$	—			$	54,281			$	—			$	54,281
Certificates of deposit			—				18,866				—				18,866
Commercial paper			28,534				—				—				28,534
U.S. government treasuries			16,080				—								16,080
Asset-backed securities			—				10,472				—				10,472
Money market funds (cash equivalents)			575				—				—				575
Total assets		$	45,189			$	83,619			$	—			$	128,808

X

- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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