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Note 11 - Other Borrowings - Other Borrowings (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Weighted-average rate during the year | 1.18% | 0.89%
Other borrowings | $ 29,065 | $ 9,437
Fixed Rate Amortizing [Member] |  |
Maturity range, minimum | Feb. 01, 2018 |
Maturity range, maximum | Oct. 01, 2028 |
Weighted-average rate during the year | 1.24% |
Other borrowings | $ 20,817 | 1,189
Fixed Rate Amortizing [Member] | Minimum [Member] |  |
Stated interest rate | 1.01% |
Fixed Rate Amortizing [Member] | Maximum [Member] |  |
Stated interest rate | 4.47% |
Junior Subordinated Debt [Member] |  |
Maturity range, minimum | Dec. 21, 2037 |
Maturity range, maximum | Dec. 21, 2037 |
Weighted-average rate during the year | 2.85% |
Other borrowings | $ 8,248 | $ 8,248
Junior Subordinated Debt [Member] | Minimum [Member] |  |
Stated interest rate | 2.56% |
Junior Subordinated Debt [Member] | Maximum [Member] |  |
Stated interest rate | 3.05% |

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- Definition The average effective interest rate during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity. + 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 210.9-03.13,16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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