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Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Loans past due 90 days or more and still accruing | $ 51 | $ 63
Nonaccruals | 2,769 | 5,855
Real Estate Construction Portfolio Segment[Member] | Construction Residential [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 270
Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 0
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 0
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |
Loans past due 90 days or more and still accruing | 11 | 6
Nonaccruals | 145 | 0
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 36
Nonaccruals | 0 | 0
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 6 | 253
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 1,091
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 1,183
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 2,602 | 2,814
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due 90 days or more and still accruing | 0 |
Nonaccruals | 15 |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due 90 days or more and still accruing |  | 0
Nonaccruals |  | 241
Public Sector and IDA Portfolio Segment[Member] |  |
Loans past due 90 days or more and still accruing | 0 | 0
Nonaccruals | 0 | 0
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |
Loans past due 90 days or more and still accruing | 12 | 5
Nonaccruals | 0 | 0
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |
Loans past due 90 days or more and still accruing | 22 | 12
Nonaccruals | 1 | 3
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Loans past due 90 days or more and still accruing | 6 | 4
Nonaccruals | 0 | 0
Financing Receivables 30 to 89 Days Past Due [Member] |  |
Loans past due and accruing | 2,263 | 2,553
Financing Receivables 30 to 89 Days Past Due [Member] | Real Estate Construction Portfolio Segment[Member] | Construction Residential [Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables 30 to 89 Days Past Due [Member] | Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] |  |
Loans past due and accruing | 0 | 25
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |
Loans past due and accruing | 0 | 10
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |
Loans past due and accruing | 637 | 1,498
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |
Loans past due and accruing | 188 | 114
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |
Loans past due and accruing | 66 | 56
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |
Loans past due and accruing | 303 | 132
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |
Loans past due and accruing | 402 | 339
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due and accruing | 131 |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due and accruing |  | 6
Financing Receivables 30 to 89 Days Past Due [Member] | Public Sector and IDA Portfolio Segment[Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |
Loans past due and accruing | 7 | 8
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |
Loans past due and accruing | 375 | 234
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Loans past due and accruing | 154 | 131
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Loans past due and accruing | 2,658 | 1,888
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Real Estate Construction Portfolio Segment[Member] | Construction Residential [Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Real Estate Construction Portfolio Segment[Member] | Construction, Other [Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |
Loans past due and accruing | 16 | 6
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |
Loans past due and accruing | 0 | 36
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |
Loans past due and accruing | 0 | 234
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |
Loans past due and accruing | 0 | 1,091
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |
Loans past due and accruing | 0 | 202
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |
Loans past due and accruing | 2,602 | 80
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due and accruing | 0 |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due and accruing |  | 218
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Public Sector and IDA Portfolio Segment[Member] |  |
Loans past due and accruing | 0 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |
Loans past due and accruing | 12 | 5
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |
Loans past due and accruing | 22 | 12
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Loans past due and accruing | $ 6 | $ 4

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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