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Note 4 - Investments - Available-for-sale Investments (Details) $ in Thousands | Mar. 31, 2023 USD ($)
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Fair value | $ 28,511
Short-term US Treasury Securities [Member] |
Amortixed cost | 9,496
Unrealized gains | 0
Unrealized losses | 259
Fair value | 9,237
Short-term Certificates of Deposit [Member] |
Amortixed cost | 10,995
Unrealized gains | 0
Unrealized losses | 248
Fair value | 10,747
Short-term Investment [Member] |
Amortixed cost | 20,491
Unrealized gains | 0
Unrealized losses | 507
Fair value | 19,984
Long-term US Treasury Securities [Member] |
Amortixed cost | 6,702
Unrealized gains | 0
Unrealized losses | 539
Fair value | 6,163
Long-term Certificates of Deposit [Member] |
Amortixed cost | 2,469
Unrealized gains | 1
Unrealized losses | 105
Fair value | 2,364
Long-term Investment [Member] |
Amortixed cost | 9,171
Unrealized gains | 1
Unrealized losses | 644
Fair value | $ 8,527

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 + Details
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