Refers to number of securities included in investment portfolio.

No definition available.

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- Definition

The number of securities sold during the period.

+ References

No definition available.

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity and available-for-sale in a continuous loss position.

+ References

No definition available.

+ Details

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- Definition

This item represents the fair value of securities categorized as held-to-maturity and available-for-sale which are in an unrealized loss position.

+ References

No definition available.

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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

+ Details

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

No definition available.

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
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- Definition

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 45
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This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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Note 5 - Investment Securities (Details Textual)	3 Months Ended		9 Months Ended
Note 5 - Investment Securities (Details Textual)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	$ 0	$ 0	$ 0	$ 0
Securities, Continuous Loss Position, Accumulated Loss	47,400,000		47,400,000		$ 20,100,000
Securities, Continuous Unrealized Loss Position, Fair Value	937,500,000		937,500,000		$ 836,900,000
Proceeds from Sale of Available-for-sale Securities, Total	$ 0	0	5,713,000	21,167,000
Available-for-sale Securities, Gross Realized Losses			$ 1,000	548,000
Available-for-sale Securities, Gross Realized Gains				487,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax, Total		$ (22,000)		$ (22,000)
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Number of Securities in Investment Portfolio	0		0		0
Mortgage-backed Securities, Issued by Private Enterprises [Member] \| Subprime [Member]
Number of Securities in Investment Portfolio	0		0		0
Mortgage-backed Securities, Issued by Private Enterprises [Member] \| AltA [Member]
Number of Securities in Investment Portfolio	0		0		0
US Government Agencies Debt Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	14		14
Collateralized Mortgage Obligations [Member]
Number of Securities in Investment Portfolio	0		0		0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	89		89
Number of Securities Sold				1
Collateralized Mortgage Obligations [Member] \| Subprime [Member]
Number of Securities in Investment Portfolio	0		0		0
Collateralized Mortgage Obligations [Member] \| AltA [Member]
Number of Securities in Investment Portfolio	0		0		0
Collateralized Mortgage Backed Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	29		29
Number of Securities Sold				1
US States and Political Subdivisions Debt Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	23		23
Number of Securities Sold				28
Asset-backed Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	1		1
Corporate Debt Securities [Member]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total	7		7
Collateralized Debt Obligations [Member]
Proceeds from Sale of Available-for-sale Securities, Total				$ 970,000
Available-for-sale Securities, Gross Realized Losses				$ 548,000