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Note 21 - Subsequent Events (Details Textual) $ in Thousands | May 01, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | --- | ---
Loans and Leases Receivable, Gross, Total |  | $ 15,534,212 | $ 15,075,481
Commercial Real Estate Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Gross, Total |  | 7,422,585 | 7,275,262
Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Gross, Total |  | 2,973,078 | 2,778,744
Residential Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Gross, Total |  | $ 4,173,876 | $ 4,088,586
Subsequent Event [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Number of Contracts with Modifications | 504 |  |
Loans and Leases Receivable with Modifications, Gross | $ 978,000 |  |
Financing Receivable, Percentage of Total Commercial Real Estate Loans | 13.40% |  |
Subsequent Event [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, Number of Contracts with Modifications | 46 |  |
Loans and Leases Receivable with Modifications, Gross | $ 123,200 |  |
Financing Receivable, Percentage of Total Commercial Loans | 4.10% |  |
Subsequent Event [Member] | Residential Portfolio Segment [Member] |  |  |
Financing Receivable, Number of Contracts with Approved Forbearance Requests | 1,094 |  |
Loans and Leases Receivable with Approved Forbearance Requests, Gross | $ 477,700 |  |
Financing Receivable, Percentage of Total Residential Mortgage Loans | 11.50% |  |
Subsequent Event [Member] | SBA's Paycheck Protection Program [Member] |  |  |
Financing Receivable, Number of Contracts | 964 |  |
Loans and Leases Receivable, Gross, Total | $ 242,700 |  |

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- Definition Amount before allowance of loans and leases held in portfolio with modifications, 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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- 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 + Details
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