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Note 14 - Goodwill and Other Intangible Assets (Details Textual)		3 Months Ended		12 Months Ended
	Jan. 22, 2016	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Goodwill		$ 3,592,000		$ 3,592,000
Goodwill, Impairment Loss				0
Amortization of Intangible Assets		831,000	$ 941,000
Core Deposits [Member]
Impairment of Intangible Assets, Finite-Lived		0
Amortization of Intangible Assets		$ 831,000		$ 3,633,000
Bank of America [Member]
Number of Businesses Acquired	4
Bank of America [Member] | Core Deposits [Member]
Number of Businesses Acquired		4
Finite-Lived Intangible Asset, Useful Life (Year)		9 years
Columbia State Bank [Member] | Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		10 years
Anchor Bank [Member] | Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)		10 years

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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