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Note 10 - Fair Value Measurements | 3 Months Ended
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Mar. 31, 2024
Notes to Financial Statements |
Fair Value Disclosures [Text Block] | Note 10 – Fair Value Measurements The accounting standard for fair value measurements provides a framework for measuring fair value and requires expanded disclosures regarding fair value measurements. Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. This accounting standard establishes a fair value hierarchy, which requires an entity to maximize the use of observable inputs, where available. The following summarizes the three levels of inputs that may be used to measure fair value:
| Level 1 – The valuation is based on quoted prices in active markets for identical instruments.
| Level 2 – The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model–based valuation techniques for which all significant assumptions are observable in the market.
| Level 3 – The valuation is based on unobservable inputs that are supported by minimal or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques that incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument, or valuations that require significant management judgment or estimation.
A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The following table summarizes fair value measurements by level at March 31, 2024 and December 31, 2023 for assets and liabilities measured at fair value on a recurring basis (in thousands):
|  | Fair Value Measurements Using |
March 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 |  | $ | 93,982 |  |  | $ | 93,982 |  |  | $ | – |  |  | $ | – |
Restricted cash and cash equivalents |  |  | 27,150 |  |  |  | 27,150 |  |  |  | – |  |  |  | – |
Marketable equity securities |  |  | 152,656 |  |  |  | 152,656 |  |  |  | – |  |  |  | – |
Corporate debt securities |  |  | 59,882 |  |  |  | 42,611 |  |  |  | 17,271 |  |  |  | – |
Asset–backed securities |  |  | 17,438 |  |  |  | – |  |  |  | 16,961 |  |  |  | 477 |
U.S. Treasury securities |  |  | 43,004 |  |  |  | 43,004 |  |  |  | – |  |  |  | – |
State and municipal securities |  |  | 3,992 |  |  |  | – |  |  |  | 3,992 |  |  |  | – |
Total financial assets |  | $ | 398,104 |  |  | $ | 359,403 |  |  | $ | 38,224 |  |  | $ | 477 |
|  | Fair Value Measurements Using |
December 31, 2023 |  | 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 |  | $ | 107,076 |  |  | $ | 107,076 |  |  | $ | – |  |  | $ | – |
Restricted cash and cash equivalents |  |  | 18,892 |  |  |  | 18,892 |  |  |  | – |  |  |  | – |
Marketable equity securities |  |  | 137,896 |  |  |  | 137,896 |  |  |  | – |  |  |  | – |
Corporate debt securities |  |  | 60,171 |  |  |  | 42,860 |  |  |  | 17,311 |  |  |  | – |
Asset–backed securities |  |  | 17,659 |  |  |  | – |  |  |  | 17,210 |  |  |  | 449 |
U.S. Treasury securities |  |  | 45,850 |  |  |  | 45,850 |  |  |  | – |  |  |  | – |
State and municipal securities |  |  | 4,047 |  |  |  | – |  |  |  | 4,047 |  |  |  | – |
Total financial assets |  | $ | 391,591 |  |  | $ | 352,574 |  |  | $ | 38,568 |  |  | $ | 449 |

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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