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Note 2: Investments in Securities: Schedule of Financial Instruments Owned and Pledged as Collateral (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Securities Pledged as Collateral |  |
Securities Owned and Pledged As Collateral Amortized Cost | $ 133,159 | $ 163,227
Security Owned and Pledged as Collateral, Fair Value | 132,867 | 163,393
Public deposits |  |
Securities Owned and Pledged As Collateral Amortized Cost | 10,958 | 57,841
Security Owned and Pledged as Collateral, Fair Value | 11,490 | 59,082
Collateralized Loan Obligations |  |
Securities Owned and Pledged As Collateral Amortized Cost | 120,622 | 98,787
Security Owned and Pledged as Collateral, Fair Value | 119,776 | 97,498
Collateralized Securities, Other |  |
Securities Owned and Pledged As Collateral Amortized Cost | 1,579 | 6,599
Security Owned and Pledged as Collateral, Fair Value | $ 1,601 | $ 6,813

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- Definition Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 + Details
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