Note 3 - Investment Securities - Maturities of Investment Securities Available-for-sale and Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Due in one year or less, amortized cost	$ 1,535
Due in one year or less, fair value	1,536
Due after one year through five years, amortized cost	6,116
Due after one year through five years, fair value	6,242
Due after five years through ten years, amortized cost	26,051
Due after five years through ten years, fair value	27,152
Due after ten years, amortized cost	128,530
Due after ten years, fair value	134,194
Total, amortized cost	162,232	$ 191,301
Total, fair value	$ 169,124	$ 194,675

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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