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Business Segment Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Fixed income | $ 110,943 | $ 77,645 | $ 318,999 | $ 197,808
Mortgage banking and title income | 65,503 | 2,019 | 72,072 | 6,477
Deposit transactions and cash management | 42,056 | 34,379 | 103,133 | 98,374
Brokerage, management fees and commissions | 17,891 | 14,157 | 47,096 | 40,910
Trust services and investment management | 11,741 | 7,163 | 26,669 | 22,077
Bankcard income | 10,457 | 7,017 | 24,362 | 20,324
Securities gains (losses), net | (1,170) | 97 | (2,638) | 177
Purchase accounting gain | 532,150 | 0 | 532,150 | 0
Other income | 33,352 | 29,258 | 82,105 | 84,626
Total noninterest income | 822,923 | 171,735 | 1,203,948 | 470,773
Regional Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Fixed income | 380 | 57 | 582 | 120
Mortgage banking and title income | 65,569 | 1,643 | 71,168 | 5,119
Deposit transactions and cash management | 40,500 | 32,624 | 98,906 | 93,316
Brokerage, management fees and commissions | 19,595 | 14,157 | 48,799 | 40,910
Trust services and investment management | 14,599 | 7,190 | 29,562 | 22,148
Bankcard income | 10,150 | 7,030 | 23,853 | 20,670
Securities gains (losses), net | 0 | 0 | 0 | 0
Purchase accounting gain | 0 |  | 0 | 0
Other income | 21,664 | 23,229 | 60,799 | 58,272
Total noninterest income | 172,457 | 85,930 | 333,669 | 240,555
Fixed Income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Fixed income | 110,563 | 77,588 | 318,417 | 196,582
Mortgage banking and title income | 0 | 0 | 0 | 0
Deposit transactions and cash management | 0 | 0 | 0 | 4
Brokerage, management fees and commissions | 0 | 0 | 0 | 0
Trust services and investment management | 0 | 0 | 0 | 0
Bankcard income | 0 | 11 | 0 | 11
Securities gains (losses), net | 0 | 0 | 0 | 0
Purchase accounting gain | 0 |  | 0 | 0
Other income | 220 | 209 | 1,324 | 641
Total noninterest income | 110,783 | 77,808 | 319,741 | 197,238
Corporate |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Fixed income | 0 | 0 | 0 | 0
Mortgage banking and title income | 23 | 0 | 23 | 0
Deposit transactions and cash management | 1,528 | 1,721 | 4,131 | 4,956
Brokerage, management fees and commissions | (1,704) | 0 | (1,703) | 0
Trust services and investment management | (2,858) | (27) | (2,893) | (71)
Bankcard income | 277 | 63 | 421 | 185
Securities gains (losses), net | (1,170) | 97 | (2,638) | 177
Purchase accounting gain | 532,150 |  | 532,150 | 0
Other income | 11,422 | 5,505 | 19,400 | 24,865
Total noninterest income | 539,668 | 7,359 | 548,891 | 30,112
Non-Strategic |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Fixed income | 0 | 0 | 0 | 1,106
Mortgage banking and title income | (89) | 376 | 881 | 1,358
Deposit transactions and cash management | 28 | 34 | 96 | 98
Brokerage, management fees and commissions | 0 | 0 | 0 | 0
Trust services and investment management | 0 | 0 | 0 | 0
Bankcard income | 30 | (87) | 88 | (542)
Securities gains (losses), net | 0 | 0 | 0 | 0
Purchase accounting gain | 0 |  | 0 | 0
Other income | 46 | 315 | 582 | 848
Total noninterest income | 15 | 638 | 1,647 | 2,868
Underwriting, portfolio advisory, and other noninterest income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | $ 9,900 | $ 9,200 | $ 28,600 | $ 23,600

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- Definition Acting as an agent, a broker-dealer may buy and sell securities on behalf of its customers. In return for such services, the broker-dealer charges a commission. Each time a customer enters into a buy or sell transaction, a commission is earned by the broker-dealer for its selling and administrative efforts. For securities purchased, the commission is recorded as a receivable from customers; for securities sold, it is recorded as reductions in the payable to customers. Commissions earned are usually related to the broker-dealer's customers' trading volume and the dollar amounts of the trades. In general, commissions are for smaller trades of exchange-listed stocks and bonds made by retail customers. Revenue recognized in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees. + References No definition available. + Details
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- Definition In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6571-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6387-128476 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6396-128476 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6527-128477 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6393-128476 + Details
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