Note 2 - Securities - Amortized Cost and Fair Value of Debt Investment Securities Portfolio by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Within one year, amortized cost	$ 49,398
Within one year, fair value	49,152
One to five years, amortized cost	38,081
One to five years, fair value	38,524
Five to ten years, amortized cost	26,085
Five to ten years, fair value	26,285
Beyond ten years, amortized cost	2,839
Beyond ten years, fair value	2,839
Agency mortgage-backed: residential, amortized cost	91,269
Agency mortgage-backed: residential, fair value	92,200
Total, amortized cost	207,672	$ 203,642
Total, fair value	$ 209,000	$ 201,192

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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