Note 3 - Securities - Expected Maturities of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Amounts maturing in:
Available-for-sale securities, amortized cost, one year or less	$ 3,894
Available-for-sale securities, fair value, one year or less	3,895
Available-for-sale securities, amortized cost, after one year through five years	125,541
Available-for-sale securities, fair value, after one year through five years	127,308
Available-for-sale securities, amortized cost, after five years through ten years	84,830
Available-for-sale securities, fair value, after five years through ten years	85,406
Available-for-sale securities, amortized cost, after ten years	68,143
Available-for-sale securities, fair value, after ten years	69,210
Available-for-sale securities, amortized cost, total	282,408	$ 261,198
Available-for-sale securities, fair value, total	$ 285,819

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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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth fiscal year through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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