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Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | $ 72,825 | $ 65,014 | $ 145,553 | $ 129,896
Noninterest Income (out-of-scope of Topic 606) | 20,017 | 17,395 | 37,670 | 32,344
Total noninterest income | 92,842 | 82,410 | 183,222 | 162,241
Insurance commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 23,996 | 20,853 | 46,644 | 42,473
Deposit Account [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 16,390 | 16,030 | 32,810 | 32,386
Card-Based and No Loan Fees [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 10,562 | 9,154 | 20,432 | 17,575
Fiduciary and Trust [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 13,437 | 12,346 | 26,806 | 24,281
Brokerage commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 6,896 | 4,346 | 14,169 | 8,679
Other revenue |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 1,545 | 2,286 | 4,692 | 4,502
Corporate and Commercial Specialty |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 3,320 | 4,426 | 8,515 | 9,184
Noninterest Income (out-of-scope of Topic 606) | 10,874 | 8,071 | 18,361 | 15,306
Corporate and Commercial Specialty | Insurance commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 0 | 0 | 0 | 0
Corporate and Commercial Specialty | Deposit Account [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 3,786 | 4,070 | 8,011 | 8,511
Corporate and Commercial Specialty | Card-Based and No Loan Fees [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 358 | 320 | 674 | 592
Corporate and Commercial Specialty | Fiduciary and Trust [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 0 | 0 | 0 | 0
Corporate and Commercial Specialty | Brokerage commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 0 | 0 | 0 | 0
Corporate and Commercial Specialty | Other revenue |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | (825) | 37 | (170) | 82
Community, Consumer, and Business |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 69,349 | 60,507 | 136,547 | 120,547
Noninterest Income (out-of-scope of Topic 606) | 6,901 | 5,302 | 13,739 | 10,132
Community, Consumer, and Business | Insurance commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 23,988 | 20,853 | 46,612 | 42,473
Community, Consumer, and Business | Deposit Account [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 12,590 | 11,938 | 24,773 | 23,826
Community, Consumer, and Business | Card-Based and No Loan Fees [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 10,162 | 8,829 | 19,691 | 16,973
Community, Consumer, and Business | Fiduciary and Trust [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 13,437 | 12,346 | 26,806 | 24,281
Community, Consumer, and Business | Brokerage commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 6,870 | 4,346 | 13,902 | 8,679
Community, Consumer, and Business | Other revenue |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 2,302 | 2,196 | 4,763 | 4,315
Risk Management and Shared Services |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 156 | 81 | 490 | 165
Noninterest Income (out-of-scope of Topic 606) | 2,242 | 4,022 | 5,570 | 6,906
Risk Management and Shared Services | Insurance commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 7 | 0 | 32 | 0
Risk Management and Shared Services | Deposit Account [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 13 | 23 | 25 | 49
Risk Management and Shared Services | Card-Based and No Loan Fees [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 42 | 5 | 67 | 11
Risk Management and Shared Services | Fiduciary and Trust [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 0 | 0 | 0 | 0
Risk Management and Shared Services | Brokerage commissions and fees |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | 26 | 0 | 267 | 0
Risk Management and Shared Services | Other revenue |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Noninterest Income (in-scope of Topic 606) | $ 68 | $ 53 | $ 98 | $ 105

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