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NOTE 5: INVESTMENT SECURITIES: Investment Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Available-for-sale Securities |  |
Available For Sale Securities Amortized Cost Amount | $ 273,539 | $ 243,603
Available-for-sale Securities, Gross Unrealized Gain | 5,772 | 2,950
Available-for-sale Securities, Gross Unrealized Loss | 1,561 | 2,585
Available for Sale Securities Fair Value | $ 277,750 | $ 243,968
Available for Sale Securities Tax Equivalent Yield | 3.40% | 3.29%
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises |  |
Available For Sale Securities Amortized Cost Amount | $ 178,170 | $ 154,557
Available-for-sale Securities, Gross Unrealized Gain | 3,587 | 1,272
Available-for-sale Securities, Gross Unrealized Loss | 1,561 | 2,571
Available for Sale Securities Fair Value | $ 180,196 | $ 153,258
Available for Sale Securities Tax Equivalent Yield | 3.05% | 2.83%
Collateralized Mortgage Obligations |  |
Available For Sale Securities Amortized Cost Amount | $ 52,414 | $ 39,024
Available-for-sale Securities, Gross Unrealized Gain | 592 | 250
Available-for-sale Securities, Gross Unrealized Loss | 0 | 14
Available for Sale Securities Fair Value | $ 53,006 | $ 39,260
Available for Sale Securities Tax Equivalent Yield | 3.31% | 3.18%
US States and Political Subdivisions Debt Securities |  |
Available For Sale Securities Amortized Cost Amount | $ 42,955 | $ 50,022
Available-for-sale Securities, Gross Unrealized Gain | 1,593 | 1,428
Available-for-sale Securities, Gross Unrealized Loss | 0 | 0
Available for Sale Securities Fair Value | $ 44,548 | $ 51,450
Available for Sale Securities Tax Equivalent Yield | 4.92% | 4.81%

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- Definition Represents the monetary amount of Available for Sale Securities Fair Value, as of the indicated date. + References No definition available. + Details
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- Definition Represents the Available for Sale Securities Tax Equivalent Yield, as of the indicated date. + References No definition available. + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
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- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 + Details
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