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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 | 216 Months Ended | 60 Months Ended
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Jun. 30, 2032 Domestic Tax Authority [Member] | Jun. 30, 2033 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 | $ 1,862 | $ 2,142
Net Operating Loss Carryforwards | $ 39,649 | $ 6,850

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