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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 - Activity in Allowance for Loan Losses by Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020
Beginning Balance	$ 9,580	$ 6,556
Charge-offs	(184)	(138)
Recoveries	14	10
Provision	275	792
Individually evaluated for impairment			$ 40	$ 60
Total	9,580	7,220	9,685	9,580
Individually evaluated for impairment			1,920	2,114
Loans and Leases Receivable, Net of Deferred Income, Total			795,188	809,918
Ending Balance	9,685	7,220
Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			81,421	89,761
Financial Asset Originated [Member]
Loans collectively evaluated for impairment			9,645	9,520
Loans collectively evaluated for impairment			711,847	718,043
Residential Portfolio Segment [Member]
Beginning Balance	2,774	2,309
Charge-offs		(11)
Recoveries
Provision	(114)	31
Individually evaluated for impairment			1
Total	2,660	2,329	2,660	2,774
Individually evaluated for impairment			320	329
Loans and Leases Receivable, Net of Deferred Income, Total			298,491	308,031
Ending Balance	2,660	2,329
Residential Portfolio Segment [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			40,182	44,209
Residential Portfolio Segment [Member] \| Financial Asset Originated [Member]
Loans collectively evaluated for impairment			2,659	2,774
Loans collectively evaluated for impairment			257,989	263,493
Home Equity Loans and Lines of Credit [Member]
Beginning Balance	620	626
Charge-offs		(39)
Recoveries	8
Provision	(43)	54
Individually evaluated for impairment
Total	585	641	585	620
Individually evaluated for impairment			4	3
Loans and Leases Receivable, Net of Deferred Income, Total			83,523	87,088
Ending Balance	585	641
Home Equity Loans and Lines of Credit [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			7,780	8,491
Home Equity Loans and Lines of Credit [Member] \| Financial Asset Originated [Member]
Loans collectively evaluated for impairment			585	620
Loans collectively evaluated for impairment			75,739	78,594
Commercial Real Estate Portfolio Segment [Member]
Beginning Balance	5,180	2,898
Charge-offs	(94)	(73)
Recoveries		3
Provision	386	606
Individually evaluated for impairment			33	40
Total	5,472	3,434	5,472	5,180
Individually evaluated for impairment			1,467	1,639
Loans and Leases Receivable, Net of Deferred Income, Total			285,133	285,625
Ending Balance	5,472	3,434
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			29,169	30,913
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset Originated [Member]
Loans collectively evaluated for impairment			5,439	5,140
Loans collectively evaluated for impairment			254,497	253,073
Commercial Portfolio Segment [Member]
Beginning Balance	677	636
Charge-offs
Recoveries
Provision	(65)	45
Individually evaluated for impairment			6	20
Total	612	681	612	677
Individually evaluated for impairment			129	143
Loans and Leases Receivable, Net of Deferred Income, Total			84,953	89,139
Ending Balance	612	681
Commercial Portfolio Segment [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			3,389	5,131
Commercial Portfolio Segment [Member] \| Financial Asset Originated [Member]
Loans collectively evaluated for impairment			606	657
Loans collectively evaluated for impairment			81,435	83,865
Consumer Portfolio Segment [Member]
Beginning Balance	329	87
Charge-offs	(90)	(15)
Recoveries	6	7
Provision	111	56
Individually evaluated for impairment
Total	356	135	356	329
Individually evaluated for impairment
Loans and Leases Receivable, Net of Deferred Income, Total			43,088	40,035
Ending Balance	$ 356	$ 135
Consumer Portfolio Segment [Member] \| Financial Asset Acquired and No Credit Deterioration [Member]
Loans collectively evaluated for impairment
Loans collectively evaluated for impairment			901	1,017
Consumer Portfolio Segment [Member] \| Financial Asset Originated [Member]
Loans collectively evaluated for impairment			356	329
Loans collectively evaluated for impairment			$ 42,187	$ 39,018