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Note 4 - Loans - Aging of Loan Portfolio (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loans | $ 16,342,479 | $ 15,644,396
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 32,812 | 118,402
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 13,015 | 25,474
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 1,439 | 4,982
Financial Asset, Past Due [Member] |  |
Loans | 113,112 | 216,542
Non-accrual loans | 65,846 | 67,684
Financial Asset, Not Past Due [Member] |  |
Loans | 16,229,367 | 15,427,854
Commercial Portfolio Segment [Member] |  |
Loans | 2,982,399 | 2,836,833
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 4,294 | 52,601
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 9,877 | 3,182
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 1,439 | 2,947
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |
Loans | 32,168 | 81,817
Non-accrual loans | 16,558 | 23,087
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Loans | 2,950,231 | 2,755,016
Real Estate Construction Portfolio Segment [Member] |  |
Loans | 611,031 | 679,492
Real Estate Construction Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 0 | 6,257
Real Estate Construction Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 0 | 0
Real Estate Construction Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 0 | 0
Real Estate Construction Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |
Loans | 0 | 10,543
Non-accrual loans | 0 | 4,286
Real Estate Construction Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Loans | 611,031 | 668,949
Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 8,143,272 | 7,555,027
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 8,389 | 45,186
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 0 | 18,069
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 0 | 2,035
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |
Loans | 46,562 | 99,005
Non-accrual loans | 38,173 | 33,715
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Loans | 8,096,710 | 7,456,022
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans | 4,601,493 | 4,569,944
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 20,129 | 14,315
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 3,138 | 4,223
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 0 | 0
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |
Loans | 34,382 | 25,134
Non-accrual loans | 11,115 | 6,596
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |
Loans | 4,567,111 | 4,544,810
Installment and Other Loans [Member ] |  |
Loans | 4,284 | 3,100
Installment and Other Loans [Member ] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans | 0 | 43
Installment and Other Loans [Member ] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans | 0 | 0
Installment and Other Loans [Member ] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans | 0 | 0
Installment and Other Loans [Member ] | Financial Asset, Past Due [Member] |  |
Loans | 0 | 43
Non-accrual loans | 0 | 0
Installment and Other Loans [Member ] | Financial Asset, Not Past Due [Member] |  |
Loans | $ 4,284 | $ 3,057

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- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) + 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=124259787&loc=d3e4428-111522 + Details
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