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Note 8 - Loans and Related Allowance for Loan and Lease Losses - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans, current balance	$ 1,115,663	$ 975,566
Loans, past due	8,733	8,692
Loans	1,124,396	984,258
Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	4,247	2,589
Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	1,445	345
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	3,041	5,758
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans, current balance	106,416	101,264
Loans, past due	926	1,122
Loans	107,342	102,386
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	61	64
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	177	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	688	1,058
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans, current balance	306,800	298,941
Loans, past due	3,712	3,239
Loans	310,512	302,180
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	2,379	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	739	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	594	3,239
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans, current balance	39,622	62,028
Loans, past due	0	0
Loans	39,622	62,028
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	0	0
Residential Portfolio Segment [Member]
Loans, current balance	219,234	232,518
Loans, past due	3,003	2,280
Loans	222,237	234,798
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	1,224	1,439
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	342	34
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	1,437	807
Commercial And Industrial [Member]
Loans, current balance	257,784	88,965
Loans, past due	529	562
Loans	258,313	89,527
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	320	190
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	127	66
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	82	306
Home Equity Lines of Credit [Member]
Loans, current balance	115,025	111,792
Loans, past due	198	456
Loans	115,223	112,248
Home Equity Lines of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	93	274
Home Equity Lines of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	55	29
Home Equity Lines of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	50	153
Construction and Other [Member]
Loans, current balance	60,613	66,680
Loans, past due	0	0
Loans	60,613	66,680
Construction and Other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	0	0
Construction and Other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	0	0
Construction and Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	0	0
Consumer Portfolio Segment [Member]
Loans, current balance	10,169	13,378
Loans, past due	365	1,033
Loans	10,534	14,411
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans, past due	170	622
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans, past due	5	216
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, past due	$ 190	$ 195

X

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Amount of financing receivable not past due.

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