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Securities Available For Sale (Schedule Of Fair Value Of Securities With Continuous Unrealized Losses) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
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Sep. 30, 2014 security | Dec. 31, 2013 security
Schedule of Available for sale Securities [Line Items] |  |
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value | $ 66,562 | $ 209,525
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | 89 | 334
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses | 1,078 | 12,445
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value | 107,462 | 58,632
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | 151 | 89
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses | 4,199 | 6,185
Securities with continuous unrealized losses, Estimated Fair Value | 174,024 | 268,157
Securities with continuous unrealized losses, Number of Investments | 240 | 423
Securities with continuous unrealized losses, Unrealized Losses | 5,277 | 18,630
US Government-Sponsored Enterprises [Member] |  |
Schedule of Available for sale Securities [Line Items] |  |
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value | 41,276 | 111,169
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | 47 | 140
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses | 811 | 4,801
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value | 64,852 | 40,563
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | 74 | 40
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses | 2,996 | 3,791
Securities with continuous unrealized losses, Estimated Fair Value | 106,128 | 151,732
Securities with continuous unrealized losses, Number of Investments | 121 | 180
Securities with continuous unrealized losses, Unrealized Losses | 3,807 | 8,592
US Government Agency [Member] |  |
Schedule of Available for sale Securities [Line Items] |  |
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value | 23,356 | 36,356
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | 37 | 47
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses | 256 | 1,982
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value | 19,316 | 9,156
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | 23 | 12
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses | 726 | 475
Securities with continuous unrealized losses, Estimated Fair Value | 42,672 | 45,512
Securities with continuous unrealized losses, Number of Investments | 60 | 59
Securities with continuous unrealized losses, Unrealized Losses | 982 | 2,457
Private Label Mortgage-Backed Securities [Member] |  |
Schedule of Available for sale Securities [Line Items] |  |
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value | 3 | 826
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | 1 | 12
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses |  | 61
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value | 152 | 449
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | 4 | 7
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses | 5 | 17
Securities with continuous unrealized losses, Estimated Fair Value | 155 | 1,275
Securities with continuous unrealized losses, Number of Investments | 5 | 19
Securities with continuous unrealized losses, Unrealized Losses | 5 | 78
Obligations Of States And Political Subdivisions Thereof [Member] |  |
Schedule of Available for sale Securities [Line Items] |  |
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value | 1,927 | 61,174
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | 4 | 135
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses | 11 | 5,601
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value | 23,142 | 8,464
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | 50 | 30
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses | 472 | 1,902
Securities with continuous unrealized losses, Estimated Fair Value | 25,069 | 69,638
Securities with continuous unrealized losses, Number of Investments | 54 | 165
Securities with continuous unrealized losses, Unrealized Losses | $ 483 | $ 7,503

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- Definition Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired for less than twelve months. + References No definition available. + Details
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- Definition Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired for twelve months or longer. + References No definition available. + Details
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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Amount of unrealized loss on 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 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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