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Investments (Aggregate Carrying And Approximate Market Values Of Available-For-Sale Securities) (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | $ 398,174 | $ 367,884
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 12,023 | 5,099
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 1,158 | 3,517
Securities available-for-sale | 409,039 | 369,466
U.S Treasuries and U.S. Government Agencies [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 4 | 5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Securities available-for-sale | 4 | 5
Obligations Of States And Political Subdivisions [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 57,224 | 49,725
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 2,070 | 979
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 3 | 7
Securities available-for-sale | 59,291 | 50,697
U.S. Government Agencies Mortgage-backed Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 306,201 | 287,933
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 7,035 | 2,285
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 128 | 2,021
Securities available-for-sale | 313,108 | 288,197
Private Label [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 1,108 | 1,222
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 3 | 9
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Securities available-for-sale | 1,111 | 1,231
Asset-backed Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 6,046 | 6,550
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1,178 | 463
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 901 | 1,155
Securities available-for-sale | 6,323 | 5,858
Corporate Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 23,930 | 18,793
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 436 | 221
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 126 | 321
Securities available-for-sale | 24,240 | 18,693
Debt Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 394,513 | 364,228
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 10,722 | 3,957
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 1,158 | 3,504
Securities available-for-sale | 404,077 | 364,681
Equity Securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 2,136 | 2,131
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1,283 | 1,142
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Securities available-for-sale | 3,419 | 3,273
Money Market Funds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Securities available-for-sale, Amortized Cost | 1,525 | 1,525
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 18 | 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0 | 13
Securities available-for-sale | $ 1,543 | $ 1,512

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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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