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Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Amortization of intangible assets | $ 16,015 | $ 12,557 | $ 12,135
Customer Relationships [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 10 years 9 months 18 days |  |
Trade Name [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 10 years |  |
Core Deposits [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 4 years 2 months 12 days |  |
Non-Compete Agreements [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 7 years |  |
Investment Banking Backlog [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 8 years 9 months 18 days |  |
Acquired Technology [Member] |  |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |  |
Weighted-average remaining lives of intangible assets | 2 years 8 months 12 days |  |

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- Definition Schedule of goodwill and intangible assets. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: 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=118932676&loc=d3e3602-108585 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)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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