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Note 8 - Deposits - Contractual Maturities of Certificates of Deposit (Details) - Certificates of Deposits Less Than $250,000 [Member] $ in Thousands	Dec. 31, 2018 USD ($)
1 year or less	$ 152,133
1 year or less, Weighted Ave. Stated Interest Rate	2.1847%
More than 1 year through 2 years	$ 10,501
More than 1 year through 2 years, Weighted Ave. Stated Interest Rate	2.6953%
More than 2 years through 3 years	$ 15,619
More than 2 years through 3 years, Weighted Ave. Stated Interest Rate	2.816%
More than 3 years through 4 years	$ 5,347
More than 3 years through 4 years, Weighted Ave. Stated Interest Rate	2.9874%
Contractual Maturities of Certificates of Deposit, Total	$ 183,600
Contractual Maturities of Certificates of Deposit, Total, Weighted Ave. Stated Interest Rate	2.291%

X

- Definition

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

+ References

No definition available.

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- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
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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://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 470
-SubTopic 10
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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

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-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
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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

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-Topic 470
-SubTopic 10
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Amount of time deposit liabilities, including certificates of deposit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

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-SubTopic 210
-Section S99
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Weighted average interest rate for time deposits held by the entity with maturities greater than three years, but four years or less.

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

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

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

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