Note 2 - Securities - Amortized Cost and Fair Value of Debt Investment Securities Portfolio by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Within one year, amortized cost	$ 31,403
Within one year, fair value	30,003
One to five years, amortized cost	40,037
One to five years, fair value	40,515
Five to ten years, amortized cost	23,970
Five to ten years, fair value	22,852
Beyond ten years, amortized cost	19,205
Beyond ten years, fair value	16,186
Agency mortgage-backed: residential, amortized cost	86,840
Agency mortgage-backed: residential, fair value	89,101
Total, amortized cost	201,455	$ 207,672
Total, fair value	$ 198,657	$ 209,000

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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