Note 18 - Fair Value Measurements and Fair Value of Financial Instruments (Details Textual)		3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 01, 2023 USD ($)	Sep. 30, 2023 USD ($) $ / item	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / item	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivables, Collateral Dependent, Write-down				$ 2,600,000
Write Down on Other Real Estate Owned				0		$ 0
Other Real Estate, Disposals	$ 293,000
Gains (Losses) on Sales of Other Real Estate	$ 190,000	$ 190,000	$ 0	190,000	$ 0
Fair Value, Recurring [Member]
Assets, Fair Value Disclosure		354,403,000		354,403,000		256,848,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure		25,000		25,000		18,000
Measurement Input, Margin Cost Rate [Member] | Interest Rate Lock Contracts and Forward Mortgage Loan Sale Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset		$ 25,000		25,000		18,000
Unrealized Gain (Loss) on Derivatives				$ 7,000
Minimum [Member] | Interest Rate Lock Contracts and Forward Mortgage Loan Sale Contracts [Member]
Derivative, Buy Price (in USD per Per Share) | $ / item		99		99
Derivative, Sale Price (in USD per Per Share) | $ / item		99		99
Minimum [Member] | Measurement Input, Margin Cost Rate [Member] | Interest Rate Lock Contracts and Forward Mortgage Loan Sale Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset, Measurement Input		0.005		0.005
Maximum [Member] | Interest Rate Lock Contracts and Forward Mortgage Loan Sale Contracts [Member]
Derivative, Buy Price (in USD per Per Share) | $ / item		100		100
Derivative, Sale Price (in USD per Per Share) | $ / item		102		102
Maximum [Member] | Measurement Input, Margin Cost Rate [Member] | Interest Rate Lock Contracts and Forward Mortgage Loan Sale Contracts [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset, Measurement Input		0.005		0.005
Other Real Estate Owned [Member] | Minimum [Member] | Measurement Input, Comparability Adjustment [Member]
Alternative Investment, Measurement Input		0.05		0.05
Other Real Estate Owned [Member] | Maximum [Member] | Measurement Input, Comparability Adjustment [Member]
Alternative Investment, Measurement Input		0.06		0.06
Other Real Estate Owned [Member] | Single-Family Residences [Member]
Assets, Fair Value Disclosure		$ 284,000		$ 284,000		$ 577,000