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Note 2: Investments in Securities: Investments Classified by Contractual Maturity Date (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Details  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost $ 849
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value 919
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost 9,959
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value 10,139
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost 39,214
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value 40,392
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost 193,581
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value 192,518
Available-for-sale Securities, Amortized Cost Basis 243,603
Available for Sale Securities Fair Value $ 243,968