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Note 2 - Debt Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities available for sale, amortized cost	$ 114,277	$ 153,477
Securities available for sale, unrealized gains	1,391	931
Securities available for sale, unrealized losses	(131)	(1,292)
Securities available for sale, fair value	115,537	153,116	[1]
US Government Agencies Debt Securities [Member]
Securities available for sale, amortized cost	1,019	1,108
Securities available for sale, unrealized gains		5
Securities available for sale, unrealized losses	(3)
Securities available for sale, fair value	1,016	1,113
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, amortized cost	78,510	96,886
Securities available for sale, unrealized gains	1,038	912
Securities available for sale, unrealized losses		(509)
Securities available for sale, fair value	79,548	97,289
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
Mortgage-backed Agency Securities [Member]
Securities available for sale, amortized cost	34,748	35,513
Securities available for sale, unrealized gains	353	14
Securities available for sale, unrealized losses	(128)	(773)
Securities available for sale, fair value	$ 34,973	$ 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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