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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
Mar. 31, 2020
Dec. 31, 2019
Due in one year or less, amortized costs $ 42  
Due in one year or less, fair value 42  
Due after one year through five years, amortized costs 1,316  
Due after one year through five years, fair value 1,328  
Due after five years through ten years, amortized costs 17,965  
Due after five years through ten years, fair value 18,255  
Due after ten years, amortized costs 86,467  
Due after ten years, fair value 83,334  
Amortized costs 105,790 $ 103,401
Fair Value $ 102,959 $ 105,733