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Note 7 - Deposits - Contractual Maturities of Certificates of Deposit (Details) $ in Thousands	Dec. 31, 2016 USD ($)
1 year or less	$ 144,323
1 year or less	0.7517%
More than 1 year through 2 years	$ 61,903
More than 1 year through 2 years	1.6028%
More than 2 years through 3 years	$ 3,329
More than 2 years through 3 years	1.2345%
More than 3 years through 4 years	$ 1,516
More than 3 years through 4 years	0.5454%
More than 4 years through 5 years	$ 615
More than 4 years through 5 years	0.5395%
Contractual Maturities of Certificates of Deposit, Total	$ 211,686
Contractual Maturities of Certificates of Deposit, Total	1.0061%
Certificates of Deposits Less Than $250,000 [Member]
1 year or less	$ 121,014
1 year or less	0.7104%
More than 1 year through 2 years	$ 35,726
More than 1 year through 2 years	1.5372%
More than 2 years through 3 years	$ 1,738
More than 2 years through 3 years	0.509%
More than 3 years through 4 years	$ 1,516
More than 3 years through 4 years	0.5454%
More than 4 years through 5 years	$ 615
More than 4 years through 5 years	0.5395%
Contractual Maturities of Certificates of Deposit, Total	$ 160,609
Contractual Maturities of Certificates of Deposit, Total	0.8899%
Certificates of Deposit $250,000 or Greater [Member]
1 year or less	$ 23,309
1 year or less	0.9662%
More than 1 year through 2 years	$ 26,177
More than 1 year through 2 years	1.6924%
More than 2 years through 3 years	$ 1,591
More than 2 years through 3 years	2.0268%
More than 3 years through 4 years	$ 0
More than 3 years through 4 years	0.00%
More than 4 years through 5 years	$ 0
More than 4 years through 5 years	0.00%
Contractual Maturities of Certificates of Deposit, Total	$ 51,077
Contractual Maturities of Certificates of Deposit, Total	1.3714%

X

- Definition

Weighted average interest rate for time deposits held by the entity.

+ References

No definition available.

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X

- Definition

Amount of time deposits maturing in the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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X

- Definition

Amount of time deposits maturing in the fourth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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X

- Definition

Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Industry Guide
-Number 3
-Section V
-Paragraph D-E

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- Definition

Amount of time deposits maturing in the third fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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X

- Definition

Amount of time deposits maturing in the second fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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X

- Definition

Amount of time deposit liabilities, including certificates of deposit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=50488274&loc=d3e64164-112818

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Industry Guide
-Number 3
-Section V
-Paragraph D-E

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- Definition

Weighted average interest rate for time deposits held by the entity with maturities greater than four years, but five years or less.

+ References

No definition available.

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- Definition

Weighted average interest rate for time deposits held by the entity with maturities greater than three years, but four years or less.

+ References

No definition available.

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- Definition

Weighted average interest rate for time deposits held by the entity with maturities of one year or less.

+ References

No definition available.

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X

- Definition

Weighted average interest rate for time deposits held by the entity with maturities greater than two years, but three years or less.

+ References

No definition available.

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- Definition

Weighted average interest rate for time deposits held by the entity with maturities greater than one year, but two years or less.

+ References

No definition available.

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