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Investments (Aggregate Carrying And Approximate Market Values Of Held-To-Maturity Securities) (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
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Schedule of Held-to-maturity Securities [Line Items] |  |
Securities held-to-maturity, Amortized Cost | $ 84,082 | $ 90,786
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 2,479 | 3,405
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 | 0
Securities held-to-maturity, Estimated Fair Value | 86,561 | 94,191
Other Investments and Securities, at Cost | 9,926 | 9,857
Other Investment Not Readily Marketable, Fair Value | 9,926 | 9,857
U.S. Government Agencies Mortgage-backed Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities held-to-maturity, Amortized Cost | 80,081 | 86,742
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 1,770 | 2,733
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 | 0
Securities held-to-maturity, Estimated Fair Value | 81,851 | 89,475
Trust Preferred Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Securities held-to-maturity, Amortized Cost | 4,001 | 4,044
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 709 | 672
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | 0 | 0
Securities held-to-maturity, Estimated Fair Value | 4,710 | 4,716
Non-Marketable Equity Securities [Member] |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Other Investments and Securities, at Cost | 9,926 | 9,857
Other Investment Not Readily Marketable, Fair Value | $ 9,926 | $ 9,857

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- Definition Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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