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Note 8 - Fair Value Measurement | 9 Months Ended
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Mar. 31, 2023
Notes to Financial Statements |
Fair Value Disclosures [Text Block] | (8) Fair Value Measurement ASC Topic 820 “Fair Value Measurement” (“Topic 820”) defines fair value, establishes a market-based framework or hierarchy for measuring fair value, and expands disclosures about fair value measurements. Topic 820 is applicable whenever assets and liabilities are measured and included in the financial statements at fair value. The fair value hierarchy established in Topic 820 prioritizes the inputs used in valuation techniques into three levels as follows: Level 1 - Quoted prices in active markets for identical assets or liabilities. Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. The following tables present the carrying amounts, estimated fair values, and valuation input levels of certain financial instruments as of March 31, 2023 and June 30, 2022:
|  | March 31, 2023 |
|  | Carrying |  |  | Fair Value Measured Using |  |  | Fair |
(In thousands) |  | Amount |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Value |
Available-for-Sale Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual Funds - Corporate & Government Debt |  |  | 19,028 |  |  |  | 19,028 |  |  |  | — |  |  |  | — |  |  |  | 19,028 |
ETFs - Corporate & Government Debt |  |  | 6,977 |  |  |  | 6,977 |  |  |  | — |  |  |  | — |  |  |  | 6,977 |
Time deposits: 91-360 days |  |  | 3,709 |  |  |  | — |  |  |  | 3,709 |  |  |  | — |  |  |  | 3,709 |
Total Available-for-Sale Investments |  | $ | 29,714 |  |  | $ | 26,005 |  |  | $ | 3,709 |  |  | $ | — |  |  | $ | 29,714 |
|  | June 30, 2022 |
|  | Carrying |  |  | Fair Value Measured Using |  |  | Fair |
(In thousands) |  | Amount |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Value |
Available-for-Sale Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-Term Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual Funds - Corporate & Government Debt |  |  | 19,191 |  |  |  | 19,191 |  |  |  | — |  |  |  | — |  |  |  | 19,191 |
ETFs - Corporate & Government Debt |  |  | 6,982 |  |  |  | 6,982 |  |  |  | — |  |  |  | — |  |  |  | 6,982 |
Total Available-for-Sale Investments |  | $ | 26,173 |  |  | $ | 26,173 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,173 |
The value of available-for-sale securities with Level 1 inputs is based on pricing from third-party pricing vendors, who use quoted prices in active markets for identical assets. The fair value measurements used for time deposits are considered Level 2 and use pricing from third-party pricing vendors who use quoted prices for identical or similar securities in both active and inactive markets.

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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/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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