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Note 4 - Loans Receivable and Allowance for Loan and Lease Losses - Non-accrual Loans (Details) - Business Activities Loans [Member] - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Non-accruing loans	$ 28,030	$ 19,186
Commercial Real Estate Portfolio Segment [Member]
Non-accruing loans	10,953	3,525
Residential Portfolio Segment [Member]
Non-accruing loans	3,473	2,006
Commercial Portfolio Segment [Member]
Non-accruing loans	4,632	4,681
Consumer Portfolio Segment [Member]
Non-accruing loans	172	174
Construction Portfolio Segment [Member]
Non-accruing loans	8,800	8,800
Substandard [Member]
Non-accruing loans	28,030	19,186
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Non-accruing loans	10,953	3,525
Substandard [Member] | Residential Portfolio Segment [Member]
Non-accruing loans	3,473	2,006
Substandard [Member] | Commercial Portfolio Segment [Member]
Non-accruing loans	4,632	4,681
Substandard [Member] | Consumer Portfolio Segment [Member]
Non-accruing loans	172	174
Substandard [Member] | Construction Portfolio Segment [Member]
Non-accruing loans	8,800	8,800
Substandard [Member] | Commercial and Industrial Portfolio Segment [Member]
Non-accruing loans		4,681
Substandard [Member] | Non-Accrual Loans [Member]
Performing (accruing) loans, past due	7,999	18,384
Performing (accruing) loans, current	20,031	802
Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	1,011	3,525
Performing (accruing) loans, current	9,942
Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,903	2,006
Performing (accruing) loans, current	570
Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	3,913
Performing (accruing) loans, current	719
Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	172	97
Performing (accruing) loans, current		77
Substandard [Member] | Non-Accrual Loans [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due		8,800
Performing (accruing) loans, current	8,800
Substandard [Member] | Non-Accrual Loans [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due		3,956
Performing (accruing) loans, current		725
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member]
Performing (accruing) loans, past due	60	1,580
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due		1,580
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	60
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	0
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 30 to 59 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member]
Performing (accruing) loans, past due	102	101
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	0
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	102	86
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due
Financial Asset, 60 to 89 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due		15
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member]
Performing (accruing) loans, past due	7,837	16,703
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Performing (accruing) loans, past due	1,011	1,945
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Residential Portfolio Segment [Member]
Performing (accruing) loans, past due	2,843	2,006
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial Portfolio Segment [Member]
Performing (accruing) loans, past due	3,913
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Consumer Portfolio Segment [Member]
Performing (accruing) loans, past due	70	11
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Construction Portfolio Segment [Member]
Performing (accruing) loans, past due		8,800
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Substandard [Member] | Non-Accrual Loans [Member] | Commercial and Industrial Portfolio Segment [Member]
Performing (accruing) loans, past due		$ 3,941

X

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