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Note 2 - Debt Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Securities available for sale, amortized cost	$ 117,844	$ 153,477
Securities available for sale, unrealized gains	1,434	931
Securities available for sale, unrealized losses	(202)	(1,292)
Securities available for sale, fair value	119,076	153,116	[1]
US Government Agencies Debt Securities [Member]
Securities available for sale, amortized cost	1,049	1,108
Securities available for sale, unrealized gains		5
Securities available for sale, unrealized losses	(1)
Securities available for sale, fair value	1,048	1,113
US Treasury Securities [Member]
Securities available for sale, amortized cost		19,970
Securities available for sale, unrealized gains
Securities available for sale, unrealized losses		(10)
Securities available for sale, fair value		19,960
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, amortized cost	82,776	96,886
Securities available for sale, unrealized gains	1,164	912
Securities available for sale, unrealized losses	(2)	(509)
Securities available for sale, fair value	83,938	97,289
Mortgage-backed Agency Securities [Member]
Securities available for sale, amortized cost	34,019	35,513
Securities available for sale, unrealized gains	270	14
Securities available for sale, unrealized losses	(199)	(773)
Securities available for sale, fair value	$ 34,090	$ 34,754
[1] Derived from audited financial statements

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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