Note C - Securities - Securities Available-for-sale (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Securities available for sale, amortized cost	$ 104,867	$ 102,455
Securities available for sale, gross unrealized gains	100	300
Securities available for sale, gross unrealized losses	(2,803)	(1,630)
Securities available for sale	102,164	101,125
US Government-sponsored Enterprises Debt Securities [Member]
Securities available for sale, amortized cost	16,837	13,622
Securities available for sale, gross unrealized gains	8
Securities available for sale, gross unrealized losses	(215)	(149)
Securities available for sale	16,630	13,473
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Securities available for sale, amortized cost	88,030	88,833
Securities available for sale, gross unrealized gains	92	300
Securities available for sale, gross unrealized losses	(2,588)	(1,481)
Securities available for sale	$ 85,534	$ 87,652

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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Amount, before tax, of unrealized loss 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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Amortized cost of 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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