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Note 3 - Debt Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Securities available for sale, amortized cost	$ 105,842	$ 168,478
Securities available for sale, unrealized gains	1,916	1,266
Securities available for sale, unrealized losses	(5)	(170)
Securities available for sale, fair value	107,753	169,574	[1]
US Government Agencies Debt Securities [Member]
Securities available for sale, amortized cost	618	5,038
Securities available for sale, unrealized gains
Securities available for sale, unrealized losses	(3)	(4)
Securities available for sale, fair value	615	5,034
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, amortized cost	68,576	85,992
Securities available for sale, unrealized gains	705	886
Securities available for sale, unrealized losses
Securities available for sale, fair value	69,281	86,878
Mortgage-backed Agency Securities [Member]
Securities available for sale, amortized cost	36,648	77,448
Securities available for sale, unrealized gains	1,211	380
Securities available for sale, unrealized losses	(2)	(166)
Securities available for sale, fair value	$ 37,857	$ 77,662
[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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