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Note 7 - Investment and Equity Securities - Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Due in one year or less, amortized costs	$ 5,094
Due in one year or less, fair value	5,109
Due after one year through five years, amortized costs	1,276
Due after one year through five years, fair value	1,296
Due after five years through ten years, amortized costs	15,267
Due after five years through ten years, fair value	15,592
Due after ten years, amortized costs	80,781
Due after ten years, fair value	83,044
Amortized costs	102,418	$ 98,516
Fair Value	$ 105,041	$ 98,322

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