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NOTE 5: INVESTMENT SECURITIES: Investment, Policy (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Details    
Debt Securities, Held-to-maturity $ 0 $ 0
Fair Value of Debt Securities Reported Less Than Their Historical Cost $ 9,700 $ 116,200
Debt Securities Reported Less Than Their Historical Cost Percent of Investment Portfolio 2.50% 31.10%