Note 6 - Intangible Assets - Core Deposit Intangible (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Finite-Lived Intangible Assets, Net	$ 14,218,000		$ 14,218,000		$ 0
Amortization of Intangible Assets	$ 444,000	$ 0	$ 444,000	$ 0
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years		10 years
Finite-Lived Intangible Assets, Net	$ 14,218,000		$ 14,218,000
Amortization of Intangible Assets	$ 444,000