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Loans and the Allowance for Loan Losses (Details) - Aging analysis - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | $ 62,373 | $ 49,481
Total Past Due and Nonaccrual | 159,486 | 58,797
Current | 5,854,333 | 5,059,497
Gross Loans | 6,013,819 | 5,118,294
Commercial Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 29,984 | 31,455
Total Past Due and Nonaccrual | 40,232 | 34,801
Current | 1,199,995 | 1,094,860
Gross Loans | 1,240,227 | 1,129,661
Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 8,314 | 8,338
Total Past Due and Nonaccrual | 77,282 | 10,808
Current | 3,630,109 | 3,031,151
Gross Loans | 3,707,391 | 3,041,959
Commercial Construction Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 18,205 | 6,773
Total Past Due and Nonaccrual | 26,126 | 6,773
Current | 650,710 | 616,553
Gross Loans | 676,836 | 623,326
Residential Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 5,819 | 2,915
Total Past Due and Nonaccrual | 15,791 | 6,415
Current | 371,609 | 313,605
Gross Loans | 387,400 | 320,020
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 51 |
Total Past Due and Nonaccrual | 55 |
Current | 1,910 | 3,328
Gross Loans | 1,965 | 3,328
30 - 59 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 90,944 | 5,576
30 - 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 6,229 | 239
30 - 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 68,291 | 1,980
30 - 59 Days Past Due [Member] | Commercial Construction Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 7,921 |
30 - 59 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 8,501 | 3,357
30 - 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 2 |
60 - 89 Days Past Due [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 645 | 633
60 - 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual |  |
60 - 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual |  | 490
60 - 89 Days Past Due [Member] | Commercial Construction Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual |  |
60 - 89 Days Past Due [Member] | Residential Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 643 | 143
60 - 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 2 |
90 Days or Greater Past Due and Still Accruing [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 5,524 | 3,107
90 Days or Greater Past Due and Still Accruing [Member] | Commercial Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 4,019 | 3,107
90 Days or Greater Past Due and Still Accruing [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 677 |
90 Days or Greater Past Due and Still Accruing [Member] | Commercial Construction Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual |  |
90 Days or Greater Past Due and Still Accruing [Member] | Residential Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual | 828 |
90 Days or Greater Past Due and Still Accruing [Member] | Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Past Due and Nonaccrual |  |

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
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