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Other Investment Securities (Schedule Of Other Investment Securities) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2017
Schedule of Investments [Line Items] |  |  |
Federal Home Loan Bank Stock | $ 50,086 | $ 50,086 | $ 50,086
Federal Reserve Bank Stock | 8,225 | 8,225 | 8,225
Equity investments carried at fair value | 9,229 | 9,229 | 1,935
Equity Method Investments | 2,589 | 2,589 | 3,500
Other investment securities | 70,129 | 70,129 | $ 63,746
Equity Securities, FV-NI, Unrealized Gain (Loss) | $ (304) | $ (3,793) |

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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75031641&loc=d3e63345-112809 + Details
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