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Note 4 - Loans Receivables and Allowance for Loan and Lease Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Impaired loans, recorded investment	$ 24,000		$ 24,000
With no allowance recorded, average recorded investment	10,556	$ 17,918	10,661	$ 15,721
With no allowance recorded, interest income recognized	48	81	96	145
With allowance recorded, average recorded investment	13,431	11,200	13,246	10,224
With allowance recorded, interest income recognized	72	39	121	69
Impaired Loans, Average recorded investment	23,987	29,118	23,907	25,945
Impaired Loans, interest income recognized	120	120	217	214
Business Activities Loans [Member]
Impaired loans with no related allowance recorded, recorded investment	10,458		10,458		$ 10,820
Impaired loans with no related allowance recorded, unpaid principal balance	11,551		11,551		11,820
Impaired loans with a related allowance recorded, recorded investment	13,566		13,566		12,982
Impaired loans with a related allowance recorded, unpaid principal balance	14,278		14,278		13,416
Impaired loans, related allowance	2,895		2,895		2,299
Impaired loans, recorded investment	24,024		24,024		23,802
Impaired loans, unpaid principal balance	25,829		25,829		25,236
Commercial Real Estate Portfolio Segment [Member]
With no allowance recorded, average recorded investment	6,611	8,188	6,697	6,979
With no allowance recorded, interest income recognized	32	39	64	39
With allowance recorded, average recorded investment	8,843	8,813	8,858	8,812
With allowance recorded, interest income recognized	40	0	65	0
Impaired Loans, Average recorded investment	15,454	17,001	15,555	15,791
Impaired Loans, interest income recognized	72	39	129	39
Commercial Real Estate Portfolio Segment [Member] | Business Activities Loans [Member]
Impaired loans with no related allowance recorded, recorded investment	6,537		6,537		6,820
Impaired loans with no related allowance recorded, unpaid principal balance	7,552		7,552		7,776
Impaired loans with a related allowance recorded, recorded investment	8,829		8,829		8,884
Impaired loans with a related allowance recorded, unpaid principal balance	8,800		8,800		8,811
Impaired loans, related allowance	1,900		1,900		1,567
Impaired loans, recorded investment	15,366		15,366		15,704
Impaired loans, unpaid principal balance	16,352		16,352		16,587
Residential Portfolio Segment [Member]
With no allowance recorded, average recorded investment	2,818	4,276	2,829	4,280
With no allowance recorded, interest income recognized	10	16	18	29
With allowance recorded, average recorded investment	453	270	456	201
With allowance recorded, interest income recognized	2	5	4	8
Impaired Loans, Average recorded investment	3,271	4,546	3,285	4,481
Impaired Loans, interest income recognized	12	21	22	37
Residential Portfolio Segment [Member] | Business Activities Loans [Member]
Impaired loans with no related allowance recorded, recorded investment	2,800		2,800		2,847
Impaired loans with no related allowance recorded, unpaid principal balance	2,745		2,745		2,763
Impaired loans with a related allowance recorded, recorded investment	446		446		461
Impaired loans with a related allowance recorded, unpaid principal balance	480		480		488
Impaired loans, related allowance	7		7		8
Impaired loans, recorded investment	3,246		3,246		3,308
Impaired loans, unpaid principal balance	3,225		3,225		3,251
Commercial Portfolio Segment [Member]
With no allowance recorded, average recorded investment	607	4,741	614	3,608
With no allowance recorded, interest income recognized	2	25	5	71
With allowance recorded, average recorded investment	3,967	2,031	3,766	1,161
With allowance recorded, interest income recognized	29	32	50	58
Impaired Loans, Average recorded investment	4,574	6,772	4,380	4,769
Impaired Loans, interest income recognized	31	57	55	129
Commercial Portfolio Segment [Member] | Business Activities Loans [Member]
Impaired loans with no related allowance recorded, recorded investment	603		603		630
Impaired loans with no related allowance recorded, unpaid principal balance	736		736		758
Impaired loans with a related allowance recorded, recorded investment	4,124		4,124		3,471
Impaired loans with a related allowance recorded, unpaid principal balance	4,798		4,798		3,916
Impaired loans, related allowance	986		986		723
Impaired loans, recorded investment	4,727		4,727		4,101
Impaired loans, unpaid principal balance	5,534		5,534		4,674
Consumer Portfolio Segment [Member]
With no allowance recorded, average recorded investment	520	713	521	854
With no allowance recorded, interest income recognized	4	1	9	6
With allowance recorded, average recorded investment	168	86	166	50
With allowance recorded, interest income recognized	1	2	2	3
Impaired Loans, Average recorded investment	688	799	687	904
Impaired Loans, interest income recognized	5	$ 3	11	$ 9
Consumer Portfolio Segment [Member] | Business Activities Loans [Member]
Impaired loans with no related allowance recorded, recorded investment	518		518		523
Impaired loans with no related allowance recorded, unpaid principal balance	518		518		523
Impaired loans with a related allowance recorded, recorded investment	167		167		166
Impaired loans with a related allowance recorded, unpaid principal balance	200		200		201
Impaired loans, related allowance	2		2		1
Impaired loans, recorded investment	685		685		689
Impaired loans, unpaid principal balance	$ 718		$ 718		$ 724

X

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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