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Note 2: Investments in Debt and Equity Securities: Schedule of Financial Instruments Owned and Pledged as Collateral (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Repurchase Agreements
    
Securities Owned and Pledged As Collateral Amortized Cost $ 60,352 $ 64,298
Security Owned and Pledged as Collateral, Fair Value 61,026 66,575
Other Debt Obligations
    
Securities Owned and Pledged As Collateral Amortized Cost 1,403 3,760
Security Owned and Pledged as Collateral, Fair Value 1,437 3,897
Securities Pledged as Collateral
    
Securities Owned and Pledged As Collateral Amortized Cost 461,602 715,509
Security Owned and Pledged as Collateral, Fair Value 461,594 734,013
Public deposits
    
Securities Owned and Pledged As Collateral Amortized Cost 228,776 459,751
Security Owned and Pledged as Collateral, Fair Value 230,318 473,679
Collateralized borrowing accounts
    
Securities Owned and Pledged As Collateral Amortized Cost 171,071 187,700
Security Owned and Pledged as Collateral, Fair Value $ 168,813 $ 189,862