Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Note 4 - Loans Receivable and Related Allowance for Loan Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Loans, gross	$ 811,891		$ 701,904
Loans and Leases Receivable, Allowance, Ending Balance	8,159	$ 7,220	6,556	$ 6,580	$ 6,639	$ 6,508
Total loans, net	803,732		695,348
Mortgage Receivable [Member]
Loans, gross	665,547		620,662
Other Loans [Member]
Loans, gross	146,344		81,242
Residential Portfolio Segment [Member]
Loans, gross	306,986		293,170
Loans and Leases Receivable, Allowance, Ending Balance	2,582	2,329	2,309	2,225	2,256	2,198
Residential Portfolio Segment [Member] \| Mortgage Receivable [Member]
Loans, gross	306,986		293,170
Home Equity Loans and Lines of Credit [Member]
Loans, gross	93,652		97,541
Loans and Leases Receivable, Allowance, Ending Balance	654	641	626	642	650	648
Home Equity Loans and Lines of Credit [Member] \| Mortgage Receivable [Member]
Loans, gross	93,652		97,541
Commercial Real Estate Portfolio Segment [Member]
Loans, gross	264,909		229,951
Loans and Leases Receivable, Allowance, Ending Balance	3,901	3,434	2,898	3,043	3,043	3,106
Commercial Real Estate Portfolio Segment [Member] \| Mortgage Receivable [Member]
Loans, gross	264,909		229,951
Commercial Portfolio Segment [Member]
Loans, gross	117,399		66,603
Loans and Leases Receivable, Allowance, Ending Balance	803	681	636	615	635	500
Commercial Portfolio Segment [Member] \| Other Loans [Member]
Loans, gross	117,399		66,603
Consumer Portfolio Segment [Member]
Loans, gross	28,945		14,639
Loans and Leases Receivable, Allowance, Ending Balance	219	$ 135	87	$ 55	$ 55	$ 56
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Loans, gross	$ 28,945		$ 14,639