Note 5 - Loans and Leases - Carrying Value of all Portfolio Loans and Leases by Portfolio Segment Based on Credit Risk Profile by Internally Assigned Grade (Details) - USD ($)
$ in Thousands |
Dec. 31, 2016 |
Dec. 13, 2016 |
Dec. 31, 2015 |
| Financing Receivable, Allowance for Credit Losses |
$ 2,535,425
|
$ 2,535,425
|
$ 2,268,988
|
| Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
2,240,987
|
|
1,883,869
|
| Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
294,438
|
|
385,119
|
| Pass [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,810,269
|
|
1,545,580
|
| Pass [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,621,983
|
|
1,298,759
|
| Pass [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
188,286
|
|
246,821
|
| Special Mention [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
4,207
|
|
8,152
|
| Special Mention [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
4,171
|
|
8,044
|
| Special Mention [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
36
|
|
108
|
| Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
16,555
|
|
25,463
|
| Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
12,898
|
|
15,669
|
| Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
3,657
|
|
9,794
|
| Doubtful [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,622
|
|
|
| Doubtful [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
125
|
|
|
| Doubtful [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,497
|
|
|
| Pass, Special Mention and Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,832,653
|
|
1,579,195
|
| Pass, Special Mention and Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,639,177
|
|
1,322,472
|
| Pass, Special Mention and Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
193,476
|
|
256,723
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,110,898
|
1,110,898
|
964,259
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
946,879
|
|
772,571
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
164,019
|
|
191,688
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,099,557
|
|
946,887
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
936,737
|
|
758,240
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
162,820
|
|
188,647
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Special Mention [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,892
|
|
7,029
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Special Mention [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,892
|
|
7,029
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Special Mention [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
9,449
|
|
10,343
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
8,250
|
|
7,302
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,199
|
|
3,041
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Doubtful [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Doubtful [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Doubtful [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass, Special Mention and Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,110,898
|
|
964,259
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass, Special Mention and Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
946,879
|
|
772,571
|
| Real Estate Portfolio Segment [Member] | Commercial Mortgage [Member] | Pass, Special Mention and Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
164,019
|
|
191,688
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
141,964
|
141,964
|
90,421
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
141,964
|
|
87,155
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
3,266
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
140,370
|
|
88,653
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
140,370
|
|
86,065
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
2,588
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,594
|
|
1,768
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,594
|
|
1,090
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
678
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Doubtful [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Doubtful [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Doubtful [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass, Special Mention and Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
141,964
|
|
90,421
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass, Special Mention and Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
141,964
|
|
87,155
|
| Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass, Special Mention and Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
|
|
3,266
|
| Commercial Portfolio Segment [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
579,791
|
$ 579,791
|
524,515
|
| Commercial Portfolio Segment [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
550,334
|
|
462,746
|
| Commercial Portfolio Segment [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
29,457
|
|
61,769
|
| Commercial Portfolio Segment [Member] | Pass [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
570,342
|
|
510,040
|
| Commercial Portfolio Segment [Member] | Pass [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
544,876
|
|
454,454
|
| Commercial Portfolio Segment [Member] | Pass [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
25,466
|
|
55,586
|
| Commercial Portfolio Segment [Member] | Special Mention [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
2,315
|
|
1,123
|
| Commercial Portfolio Segment [Member] | Special Mention [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
2,279
|
|
1,015
|
| Commercial Portfolio Segment [Member] | Special Mention [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
36
|
|
108
|
| Commercial Portfolio Segment [Member] | Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
5,512
|
|
13,352
|
| Commercial Portfolio Segment [Member] | Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
3,054
|
|
7,277
|
| Commercial Portfolio Segment [Member] | Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
2,458
|
|
6,075
|
| Commercial Portfolio Segment [Member] | Doubtful [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,622
|
|
|
| Commercial Portfolio Segment [Member] | Doubtful [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
125
|
|
|
| Commercial Portfolio Segment [Member] | Doubtful [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
1,497
|
|
|
| Commercial Portfolio Segment [Member] | Pass, Special Mention and Substandard [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
579,791
|
|
524,515
|
| Commercial Portfolio Segment [Member] | Pass, Special Mention and Substandard [Member] | Originated Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
550,334
|
|
462,746
|
| Commercial Portfolio Segment [Member] | Pass, Special Mention and Substandard [Member] | Acquired Loans [Member] |
|
|
|
| Financing Receivable, Allowance for Credit Losses |
$ 29,457
|
|
$ 61,769
|