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Note 6 - Premises and Equipment - Summary of Premises and Equipment and Applicable Depreciable Lives (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Premises and equipment, gross	$ 46,737	$ 33,594
Less accumulated depreciation	(20,304)	(19,490)
Premises and equipment, net	26,433	14,104
Construction in progress		4,236
Total	26,433	18,340
Land [Member]
Premises and equipment, gross	6,181	5,053
Building [Member]
Premises and equipment, gross	24,978	14,530
Furniture and Fixtures [Member]
Premises and equipment, gross	$ 15,578	$ 14,011

X

- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service, net of accumulated depreciation.

+ References

No definition available.

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X

- Definition

Represents the net carrying amount of property, plant, and equipment, excluding construction in progress.

+ References

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X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 50
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-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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