Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
	Jan. 23, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023	Dec. 31, 2021
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss		$ 3,281	$ 3,485
Number of Days Past Due (Day)		30 days
Number of Days of Delinquent Loans Nonaccrual of Interest (Year)		90 years
Minimum Number of Days Consumer Loans are Past Due for Losses to be Charged Off (Day)		120 days
Maximum Number of Days Consumer Loans are Past Due for Losses to be Charged Off (Day)		180 days
Number of Days Loans Secured by Residential Or Commercial Real Estate Are Past Due for Losses to Be Carged Off (Day)		180 days
Accrued Interest Receivable, Loans		$ 3,032	2,516
Period of Time Between Issuance of Loan Commitment and Closing and Sale of Loans Lower Range (Day)		30 days
Period of Time Between Issuance of Loan Commitments and Closing and Sale of Loans Upper Range (Day)		60 days
Goodwill, Impairment Loss		$ 0	0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		0
Advertising Expense		$ 109	163
Financing Receivable, Allowance for Credit Loss		9,094	8,225		$ 7,674
Retained Earnings (Accumulated Deficit)		$ 197,984	199,091
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Financing Receivable, Allowance for Credit Loss			$ 2,342	$ 2,342
Retained Earnings (Accumulated Deficit)				2,014
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Loss				$ 207
Frontier Community Bank [Member] | Subsequent Event [Member]
Business Combination, Consideration Transferred	$ 16,822
Building [Member]
Property, Plant and Equipment, Useful Life (Year)		40 years
Computer Equipment [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Minimum [Member]
Unallocated Surplus Percent		0.00%
Minimum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life (Year)		3 years
Maximum [Member]
Unallocated Surplus Percent		5.00%
Maximum [Member] | Furniture and Fixtures [Member]
Property, Plant and Equipment, Useful Life (Year)		10 years