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Note 9 - Accumulated Other Comprehensive Loss (Details Textual) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
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Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (1,947,000) | $ (1,499,000)

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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant