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Note 10 - Commitments and Contingencies (Details Textual) | 12 Months Ended
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Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Lessee Leasing Arrangements, Operating Leases, Number of Operating Leases | 7 |  |
Operating Leases, Future Minimum Payments Receivable, Total | $ 2,400,000 |  |
Operating Leases, Rent Expense, Net, Total | 593,000 | $ 953,000 | $ 1,100,000
Operating Leases, Income Statement, Sublease Revenue | 413,000 | 399,000 | 414,000
Operating Leases, Income Statement, Sublease Rental Costs | $ 5,000 | $ 5,000 | $ 5,000
Operating Lease for Bank Branch Locations [Member] |  |  |
Lessee Leasing Arrangements, Operating Leases, Number of Operating Leases | 4 |  |
Operating Lease for Administrative and Operational Space [Member] |  |  |
Lessee Leasing Arrangements, Operating Leases, Number of Operating Leases | 2 |  |
Operating Lease for Equipment [Member] |  |  |
Lessee Leasing Arrangements, Operating Leases, Number of Operating Leases | 1 |  |

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- Definition The number of operating leases in the lessee's leasing arrangements with third parties. + References No definition available. + Details
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- Definition The amount of rental costs recognized for the period under subleasing arrangements. + References No definition available. + Details
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- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 + Details
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X
- Definition The amount of revenue recognized for the period under subleasing arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=77891322&loc=d3e41620-112719 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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- Details
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- Details
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