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Note 14 - Regulatory Matters (Details Textual) $ in Millions | Dec. 31, 2023 USD ($)
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Cumulative Dividends | $ 573.9

X
- Definition Amount of cumulative cash dividends distributed to shareholders. + References No definition available. + Details
Name: | us-gaap_CumulativeDividends
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant