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Note 6 - Securities - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	$ 8,726	$ 53,233
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(102)	(336)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	53,990
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	(626)
Available-for-sale securities with unrealized loss positions, fair value	8,726	107,223
Available-for-sale securities, with unrealized loss positions, unrealized losses	(102)	(962)
Obligations of States and Political Subdivisions Tax Exempt [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	2,968	6,429
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(36)	(38)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, fair value	2,968	6,429
Available-for-sale securities, with unrealized loss positions, unrealized losses	(36)	(38)
Obligations of States and Political Subdivisions Taxable [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	1,270	5,624
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(38)	(68)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	161
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	(2)
Available-for-sale securities with unrealized loss positions, fair value	1,270	5,785
Available-for-sale securities, with unrealized loss positions, unrealized losses	(38)	(70)
Residential Collateralized Mortgage Obligations [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	875	31,409
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(9)	(195)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	30,535
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	(415)
Available-for-sale securities with unrealized loss positions, fair value	875	61,944
Available-for-sale securities, with unrealized loss positions, unrealized losses	(9)	(610)
Residential Pass-Through Securities [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value		9,771
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses		(35)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value		14,787
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses		(102)
Available-for-sale securities with unrealized loss positions, fair value		24,558
Available-for-sale securities, with unrealized loss positions, unrealized losses		(137)
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	3,613	0
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(19)	0
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	8,507
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	(107)
Available-for-sale securities with unrealized loss positions, fair value	3,613	8,507
Available-for-sale securities, with unrealized loss positions, unrealized losses	$ (19)	$ (107)

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
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+ References

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