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Note 6 - Fair Value Measurement - Schedule of Fair Value Measurement of Financial Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
--- | --- | ---
Debt Securities, Available-for-sale | $ 21,474 | $ 27,919
Corporate & Government Debt Mutual Funds Securities [Member] |  |
Debt Securities, Available-for-sale | 14,426 | 18,965
Corporate & Government Debt ETFs Securities [Member] |  |
Debt Securities, Available-for-sale | 7,048 | 6,958
Interest-bearing Time Deposits [Member] |  |
Debt Securities, Available-for-sale |  | 1,996
Reported Value Measurement [Member] |  |
Debt Securities, Available-for-sale | 21,474 | 27,919
Reported Value Measurement [Member] | Corporate & Government Debt Mutual Funds Securities [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 14,426 | 18,965
Reported Value Measurement [Member] | Corporate & Government Debt ETFs Securities [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 7,048 | 6,958
Reported Value Measurement [Member] | Interest-bearing Time Deposits [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 0 |
Reported Value Measurement [Member] | Time Deposits [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale |  | 1,996
Estimate of Fair Value Measurement [Member] |  |
Debt Securities, Available-for-sale | 21,474 | 27,919
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Available-for-sale | 21,474 | 25,923
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Available-for-sale | 0 | 1,996
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Available-for-sale | 0 | 0
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt Mutual Funds Securities [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 14,426 | 18,965
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt Mutual Funds Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Available-for-sale | 14,426 | 18,965
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt Mutual Funds Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Available-for-sale | 0 | 0
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt Mutual Funds Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Available-for-sale | 0 | 0
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt ETFs Securities [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 7,048 | 6,958
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt ETFs Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Available-for-sale | 7,048 | 6,958
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt ETFs Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Available-for-sale | 0 | 0
Estimate of Fair Value Measurement [Member] | Corporate & Government Debt ETFs Securities [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Available-for-sale | 0 | 0
Estimate of Fair Value Measurement [Member] | Interest-bearing Time Deposits [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale | 0 |
Estimate of Fair Value Measurement [Member] | Interest-bearing Time Deposits [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Available-for-sale | 0 |
Estimate of Fair Value Measurement [Member] | Interest-bearing Time Deposits [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Available-for-sale | $ 0 |
Estimate of Fair Value Measurement [Member] | Time Deposits [Member] | Short-Term Investments [Member] |  |
Debt Securities, Available-for-sale |  | 1,996
Estimate of Fair Value Measurement [Member] | Time Deposits [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Debt Securities, Available-for-sale |  | 0
Estimate of Fair Value Measurement [Member] | Time Deposits [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Debt Securities, Available-for-sale |  | 1,996
Estimate of Fair Value Measurement [Member] | Time Deposits [Member] | Short-Term Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Debt Securities, Available-for-sale |  | $ 0

X
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