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Note 6 - Loans and Allowance for Loan Losses (Details Textual) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) | Jun. 30, 2015 | Dec. 31, 2015 USD ($) | Dec. 21, 2015 USD ($)
Real Estate [Member] |  |  |  |
Percentage of Loan Portfolio | 59.50% |  | 58.00% |
Related Party Loan [Member] |  |  |  |
Loans and Leases Receivable, Related Parties | $ 2,900,000 |  | $ 2,900,000 |
Loans and Leases Receivable, Related Parties, Proceeds | $ 71,000 |  | $ 200,000 |
Variable Rate [Member] |  |  |  |
Percentage of Loan Portfolio | 56.10% |  | 52.10% |
Fixed Rate [Member] |  |  |  |
Percentage of Loan Portfolio | 43.90% |  | 47.90% |
Restructured Loans [Member] |  |  |  |
Financing Receivable, Modifications, Recorded Investment | $ 0 |  |  |
Minimum [Member] |  |  |  |
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest | $ 500,000 |  |  |
Number of Portfolio Segments | 8 |  |  |
Number of Loans, Related Party | 1 |  | 0 |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 2,619,000 |  | $ 3,102,000 |
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans | 16,000 |  | 100,000 |
Interest Income Recorded | $ 10,000 |  | $ 300,000 |
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 0 | 0 | 0 |
Troubled Debt Restructuring, Modified Period Term | 180 days |  |  |
Minimum Modified Loan Term Period | 180 days |  |  |
Financing Receivable, Restructuring Recorded Investment With Nonaccrual Status | $ 500,000 |  |  | $ 1,500,000
Financing Receivable, Restructuring, Recorded Investment Restored to Accrual Status | 37,000 |  | $ 0 |
Loans Modified in a Troubled Debt Restructuring, Individually Evaluated for Impairment, Principal Balance, Threshold | 500,000 |  |  |
Allowance for Credit Losses, Change in Method of Calculating Impairment | $ 6,000 |  | $ 1,000 |

X
- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524 + 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 -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: 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=66008989&loc=d3e5111-111524 + Details
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- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 + Details
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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + 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=66008989&loc=d3e5111-111524 + Details
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- Definition For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(e)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Definition Represents the threshold used in determining which loans that have been modified in a troubled debt restructuring are considered impaired and evaluated individually for impairment. All such loans with a principal balance above this threshold are considered impaired and evaluated individually for impairment. + References No definition available. + Details
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