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Note 8 - Loans - Aging of Loan Portfolio (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loans past due | $ 140,650 | $ 216,542
Non-accrual loans | 94,446 | 67,684
Loans not past due | 15,511,198 | 15,427,854
Loans | 15,651,848 | 15,644,396
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 41,802 | 118,402
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 2,264 | 25,474
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 2,138 | 4,982
Commercial Portfolio Segment [Member] |  |
Loans past due | 55,721 | 81,817
Non-accrual loans | 38,351 | 23,087
Loans not past due | 2,834,972 | 2,755,016
Loans | 2,890,693 | 2,836,833
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 13,845 | 52,601
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 1,645 | 3,182
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 1,880 | 2,947
Real Estate Construction Portfolio Segment [Member] |  |
Loans past due | 4,189 | 10,543
Non-accrual loans | 4,189 | 4,286
Loans not past due | 673,627 | 668,949
Loans | 677,816 | 679,492
Real Estate Construction Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 0 | 6,257
Real Estate Construction Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 0 | 0
Real Estate Construction Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 0 | 0
Commercial Real Estate Portfolio Segment [Member] |  |
Loans past due | 50,552 | 99,005
Non-accrual loans | 43,361 | 33,715
Loans not past due | 7,498,970 | 7,456,022
Loans | 7,549,522 | 7,555,027
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 6,659 | 45,186
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 274 | 18,069
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 258 | 2,035
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans past due | 30,188 | 25,134
Non-accrual loans | 8,545 | 6,596
Loans not past due | 4,500,333 | 4,544,810
Loans | 4,530,521 | 4,569,944
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 21,298 | 14,315
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 345 | 4,223
Residential Mortgage and Equity Lines Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 0 | 0
Installment and Other Loans [Member ] |  |
Loans past due | 0 | 43
Non-accrual loans | 0 | 0
Loans not past due | 3,296 | 3,057
Loans | 3,296 | 3,100
Installment and Other Loans [Member ] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans past due | 0 | 43
Installment and Other Loans [Member ] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans past due | 0 | 0
Installment and Other Loans [Member ] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | $ 0 | $ 0

X
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