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Note 11 - Other Borrowings - Other Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Other borrowings	$ 8,803	$ 29,065
Minimum [Member]
Stated interest rate
Maximum [Member]
Stated interest rate
Fixed Rate Amortizing [Member]
Maturity range, minimum	Jul. 01, 2025
Maturity range, maximum	Oct. 01, 2028
Weighted-average interest rate	4.06%
Other borrowings	$ 555	20,817
Fixed Rate Amortizing [Member] | Minimum [Member]
Stated interest rate	4.02%
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 interest rate	3.83%
Other borrowings	$ 8,248	$ 8,248
Junior Subordinated Debt [Member] | Minimum [Member]
Stated interest rate	3.05%
Junior Subordinated Debt [Member] | Maximum [Member]
Stated interest rate	4.19%

X

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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-Name Accounting Standards Codification
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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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