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Note 4 - Loans Receivable and Allowance for Loan and Lease Losses - Delinquency Status of Performing and Non-performing Loans (Details) - Business Activities Loans [Member] - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans receivable, gross	$ 751,298	$ 812,164
Non-accruing loans	20,440	18,049
Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross	292,067	314,414
Non-accruing loans	14,447	11,961
Residential Portfolio Segment [Member]
Loans receivable, gross	162,976	175,489
Non-accruing loans	3,292	3,228
Commercial Portfolio Segment [Member]
Loans receivable, gross	147,248	173,875
Non-accruing loans	1,706	2,094
Consumer Portfolio Segment [Member]
Loans receivable, gross	73,127	85,934
Non-accruing loans	995	766
Construction Portfolio Segment [Member]
Loans receivable, gross	61,534	48,388
Non-accruing loans
Construction to Permanent Portfolio Segment [Member]
Loans receivable, gross	14,346	14,064
Non-accruing loans
Pass [Member]
Loans receivable, gross	685,258	777,551
Non-accruing loans
Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross	265,497	295,982
Non-accruing loans
Pass [Member] | Residential Portfolio Segment [Member]
Loans receivable, gross	159,434	170,561
Non-accruing loans
Pass [Member] | Commercial Portfolio Segment [Member]
Loans receivable, gross	112,436	163,388
Non-accruing loans
Pass [Member] | Consumer Portfolio Segment [Member]
Loans receivable, gross	72,011	85,168
Non-accruing loans
Pass [Member] | Construction Portfolio Segment [Member]
Loans receivable, gross	61,534	48,388
Non-accruing loans
Pass [Member] | Construction to Permanent Portfolio Segment [Member]
Loans receivable, gross	14,346	14,064
Non-accruing loans
Special Mention [Member]
Loans receivable, gross	7,437	836
Non-accruing loans
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross		385
Non-accruing loans
Special Mention [Member] | Commercial and Industrial Portfolio Segment [Member]
Loans receivable, gross	7,437	451
Non-accruing loans
Substandard [Member]
Loans receivable, gross	58,603
Non-accruing loans	20,440
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross	26,570	18,047
Non-accruing loans	14,447	11,961
Substandard [Member] | Residential Portfolio Segment [Member]
Loans receivable, gross	3,542	4,928
Non-accruing loans	3,292	3,228
Substandard [Member] | Commercial Portfolio Segment [Member]
Loans receivable, gross	27,375	10,036
Non-accruing loans	1,706	2,094
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans receivable, gross	1,116	766
Non-accruing loans	995	766
Substandard [Member] | Construction Portfolio Segment [Member]
Loans receivable, gross		33,777
Non-accruing loans		18,049
Performing Financial Instruments [Member]
Performing (accruing) loans, past due	6,325	4,441
Performing (accruing) loans, current	724,533	789,674
Loans receivable, gross	730,858	794,115
Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	2,333
Performing (accruing) loans, current	275,287	302,453
Loans receivable, gross	277,620	302,453
Performing Financial Instruments [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,962	658
Performing (accruing) loans, current	156,722	171,603
Loans receivable, gross	159,684	172,261
Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	902	956
Performing (accruing) loans, current	144,640	170,825
Loans receivable, gross	145,542	171,781
Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	128	2,827
Performing (accruing) loans, current	72,004	82,341
Loans receivable, gross	72,132	85,168
Performing Financial Instruments [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current	61,534	48,388
Loans receivable, gross	61,534	48,388
Performing Financial Instruments [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current	14,346	14,064
Loans receivable, gross	14,346	14,064
Performing Financial Instruments [Member] | Pass [Member]
Performing (accruing) loans, past due	4,096	4,162
Performing (accruing) loans, current	681,162	773,389
Loans receivable, gross	685,258	777,551
Performing Financial Instruments [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	903
Performing (accruing) loans, current	264,594	295,982
Loans receivable, gross	265,497	295,982
Performing Financial Instruments [Member] | Pass [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,962	658
Performing (accruing) loans, current	156,472	169,903
Loans receivable, gross	159,434	170,561
Performing Financial Instruments [Member] | Pass [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	200	677
Performing (accruing) loans, current	112,236	162,711
Loans receivable, gross	112,436	163,388
Performing Financial Instruments [Member] | Pass [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	31	2,827
Performing (accruing) loans, current	71,980	82,341
Loans receivable, gross	72,011	85,168
Performing Financial Instruments [Member] | Pass [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current	61,534	48,388
Loans receivable, gross	61,534	48,388
Performing Financial Instruments [Member] | Pass [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current	14,346	14,064
Loans receivable, gross	14,346	14,064
Performing Financial Instruments [Member] | Special Mention [Member]
Performing (accruing) loans, past due		279
Performing (accruing) loans, current	7,437	557
Loans receivable, gross	7,437	836
Performing Financial Instruments [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current		385
Loans receivable, gross		385
Performing Financial Instruments [Member] | Special Mention [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due		279
Performing (accruing) loans, current	7,437	172
Loans receivable, gross	7,437	451
Performing Financial Instruments [Member] | Substandard [Member]
Performing (accruing) loans, past due	2,229
Performing (accruing) loans, current	35,934
Loans receivable, gross	38,163
Performing Financial Instruments [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	1,430
Performing (accruing) loans, current	10,693	6,086
Loans receivable, gross	12,123	6,086
Performing Financial Instruments [Member] | Substandard [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current	250	1,700
Loans receivable, gross	250	1,700
Performing Financial Instruments [Member] | Substandard [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	702
Performing (accruing) loans, current	24,967	7,942
Loans receivable, gross	25,669	7,942
Performing Financial Instruments [Member] | Substandard [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	97
Performing (accruing) loans, current	24
Loans receivable, gross	121
Performing Financial Instruments [Member] | Substandard [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Performing (accruing) loans, current		15,728
Loans receivable, gross		15,728
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member]
Performing (accruing) loans, past due	5,445	4,069
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	2,333
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,283	658
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	702	606
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	127	2,805
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member]
Performing (accruing) loans, past due	3,216	3,790
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	903
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,283	658
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due		327
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	30	2,805
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member]
Performing (accruing) loans, past due		279
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due		279
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member]
Performing (accruing) loans, past due	2,229
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	1,430
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	702
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	97
Financial Asset, 30 to 59 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member]
Performing (accruing) loans, past due	201	353
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	200	350
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	1	3
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member]
Performing (accruing) loans, past due	201	353
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	200	350
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	1	3
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member]
Performing (accruing) loans, past due	679	19
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	679
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due		19
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member]
Performing (accruing) loans, past due	679	19
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	679
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due		19
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Pass [Member] | Construction to Permanent Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Special Mention [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Performing Financial Instruments [Member] | Substandard [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due

X

- Definition

Amount of financing receivable not past due.

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