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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Estimable Useful Lives) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 46,508 | $ 44,212
Accumulated Amortization | (36,798) | (34,351)
Valuation allowance | (2,103) | (327)
Finite-Lived Intangible Assets, Net, Total | 7,607 | 9,534
Core Deposit Premium [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 31,270 | 31,270
Accumulated Amortization | (29,912) | (29,485)
Valuation allowance | 0 | 0
Finite-Lived Intangible Assets, Net, Total | 1,358 | 1,785
Mortgage Servicing Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 15,238 | 12,942
Accumulated Amortization | (6,886) | (4,866)
Valuation allowance | (2,103) | (327)
Finite-Lived Intangible Assets, Net, Total | $ 6,249 | $ 7,749

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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