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Note 11 - Income Taxes (Details) - Deferred Tax Assets Expiration With Respect To Net Operating Losses (USD $) In Thousands, unless otherwise specified | 228 Months Ended | 24 Months Ended
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Jun. 30, 2032 Domestic Tax Authority [Member] | Jun. 30, 2030 Foreign Tax Authority [Member]
Note 11 - Income Taxes (Details) - Deferred Tax Assets Expiration With Respect To Net Operating Losses [Line Items] |  |
Deferred Income Tax Assets | $ 2,398 | $ 1,194
Net Operating Loss Carryforwards | $ 51,808 | $ 3,880

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