Note 14 - Regulatory Matters (Details Textual) $ in Millions	Dec. 31, 2024 USD ($)
Cumulative Dividends	$ 548.7

Amount of cumulative cash dividends distributed to shareholders.

No definition available.

Name:	us-gaap_CumulativeDividends
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant