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Note 10 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

		Fair Value Measurements Using
March 31, 2025		Fair Value				Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash and cash equivalents		$	90,386			$	90,386			$	–			$	–
Restricted cash and cash equivalents			25,775				25,775				–				–
Marketable equity securities			174,482				174,482				–				–
Corporate debt securities			57,223				40,855				16,368				–
Asset–backed securities			14,263				–				14,263				–
U.S. Treasury securities			44,952				44,952				–				–
State and municipal securities			3,729				804				2,925				–
Total financial assets		$	410,810			$	377,254			$	33,556			$	–

		Fair Value Measurements Using
December 31, 2024		Fair Value				Quoted Prices in Active Markets For Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Cash and cash equivalents		$	76,121			$	76,121			$	–			$	–
Restricted cash and cash equivalents			20,801				20,801				–				–
Marketable equity securities			163,254				163,254				–				–
Corporate debt securities			57,471				43,656				13,815				–
Asset–backed securities			14,410				–				14,410				–
U.S. Treasury securities			44,186				44,186				–				–
State and municipal securities			3,737				806				2,931				–
Total financial assets		$	379,980			$	348,824			$	31,156			$	–

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- 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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