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Goodwill and Other Intangible Assets (Goodwill) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019
Goodwill [Roll Forward] |  |  |
Balance as of December 31, 2019 |  | $ 497,267 |
Goodwill impairment |  | (44,877) | $ 0
Balance as of September 30, 2020 | $ 452,390 | 452,390 |
Community Banking Reporting Unit |  |  |
Goodwill [Roll Forward] |  |  |
Balance as of December 31, 2019 |  | 256,323 |
Goodwill impairment |  | 0 |
Balance as of September 30, 2020 | 256,323 | 256,323 |
Wholesale Banking Reporting Unit |  |  |
Goodwill [Roll Forward] |  |  |
Balance as of December 31, 2019 |  | 171,636 |
Goodwill impairment |  | 0 |
Balance as of September 30, 2020 | 171,636 | 171,636 |
Consumer Mortgage Reporting Unit |  |  |
Goodwill [Roll Forward] |  |  |
Balance as of December 31, 2019 |  | 44,877 |
Goodwill impairment | (44,900) | (44,877) |
Balance as of September 30, 2020 | 0 | 0 |
Wealth Management Reporting Unit |  |  |
Goodwill [Roll Forward] |  |  |
Balance as of December 31, 2019 |  | 24,431 |
Goodwill impairment |  | 0 |
Balance as of September 30, 2020 | $ 24,431 | $ 24,431 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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