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Note 2: Investments in Securities: Investments Classified by Contractual Maturity Date (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Details  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost $ 0
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value 0
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost 9,253
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value 9,547
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost 24,504
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value 25,578
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost 328,703
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value 339,050
Available-for-sale Securities, Amortized Cost Basis 362,460
Available for Sale Securities Fair Value $ 374,175