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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, 2020
Dec. 31, 2019
Due in one year or less, amortized costs $ 3  
Due in one year or less, fair value 3  
Due after one year through five years, amortized costs 2,240  
Due after one year through five years, fair value 2,282  
Due after five years through ten years, amortized costs 27,348  
Due after five years through ten years, fair value 28,114  
Due after ten years, amortized costs 78,216  
Due after ten years, fair value 82,569  
Amortized costs 107,807 $ 103,401
Fair Value $ 112,968 $ 105,733