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Allowance for Loan Losses (Tables) | 3 Months Ended
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Mar. 31, 2019
Receivables [Abstract] |
Schedule of Age Analysis of Past Due Loans Segregated by Class of Loans | The following tables present the age analysis of past due loans segregated by class of loans as of the dates presented:
| March 31, 2019
(dollars in thousands) | Current |  |  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | Non - performing |  |  | Total Past Due Loans |  |  | Total Loans |
Commercial real estate | $ | 2,868,403 |  |  | $ | 1,876 |  |  | $ | 2,237 |  |  | $ | 29,109 |  |  | $ | 33,222 |  |  | $ | 2,901,625 |
Commercial and industrial | 1,504,824 |  |  | 785 |  |  | 588 |  |  | 6,810 |  |  | 8,183 |  |  | 1,513,007 |
Commercial construction | 244,432 |  |  | — |  |  | — |  |  | 1,226 |  |  | 1,226 |  |  | 245,658 |
Residential mortgage | 719,422 |  |  | 3,695 |  |  | 167 |  |  | 6,630 |  |  | 10,492 |  |  | 729,914 |
Home equity | 457,452 |  |  | 1,714 |  |  | 254 |  |  | 4,146 |  |  | 6,114 |  |  | 463,566 |
Installment and other consumer | 70,645 |  |  | 227 |  |  | 59 |  |  | 29 |  |  | 315 |  |  | 70,960 |
Consumer construction | 10,500 |  |  | 222 |  |  | — |  |  | — |  |  | 222 |  |  | 10,722 |
Loans held for sale | 2,706 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,706 |
Total | $ | 5,878,384 |  |  | $ | 8,519 |  |  | $ | 3,305 |  |  | $ | 47,950 |  |  | $ | 59,774 |  |  | $ | 5,938,158 |
| December 31, 2018
(dollars in thousands) | Current |  |  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | Non - performing |  |  | Total Past Due Loans |  |  | Total Loans |
Commercial real estate | $ | 2,903,997 |  |  | $ | 3,638 |  |  | $ | 2,145 |  |  | $ | 12,052 |  |  | $ | 17,835 |  |  | $ | 2,921,832 |
Commercial and industrial | 1,482,473 |  |  | 1,000 |  |  | 983 |  |  | 8,960 |  |  | 10,943 |  |  | 1,493,416 |
Commercial construction | 243,004 |  |  | — |  |  | — |  |  | 14,193 |  |  | 14,193 |  |  | 257,197 |
Residential mortgage | 717,447 |  |  | 1,584 |  |  | 520 |  |  | 7,128 |  |  | 9,232 |  |  | 726,679 |
Home equity | 465,152 |  |  | 2,103 |  |  | 609 |  |  | 3,698 |  |  | 6,410 |  |  | 471,562 |
Installment and other consumer | 67,281 |  |  | 148 |  |  | 75 |  |  | 42 |  |  | 265 |  |  | 67,546 |
Consumer construction | 8,416 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 8,416 |
Loans held for sale | 2,371 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,371 |
Total | $ | 5,890,141 |  |  | $ | 8,473 |  |  | $ | 4,332 |  |  | $ | 46,073 |  |  | $ | 58,878 |  |  | $ | 5,949,019 |
Schedule of Recorded Investment in Commercial Loan Classes by Internally Assigned Risk Ratings | The following tables present the recorded investment in commercial loan classes by internally assigned risk ratings as of the dates presented:
| March 31, 2019
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,745,156 |  | 94.6 | % |  | $ | 1,427,120 |  | 94.3 | % |  | $ | 234,717 |  | 95.5 | % |  | $ | 4,406,993 |  | 94.6 | %
Special mention | 56,829 |  | 2.0 | % |  | 23,945 |  | 1.6 | % |  | 7,263 |  | 3.0 | % |  | 88,037 |  | 1.9 | %
Substandard | 99,640 |  | 3.4 | % |  | 61,942 |  | 4.1 | % |  | 3,678 |  | 1.5 | % |  | 165,260 |  | 3.5 | %
Total | $ | 2,901,625 |  | 100.0 | % |  | $ | 1,513,007 |  | 100.0 | % |  | $ | 245,658 |  | 100.0 | % |  | $ | 4,660,290 |  | 100.0 | %
| December 31, 2018
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,776,292 |  | 95.0 | % |  | $ | 1,394,427 |  | 93.4 | % |  | $ | 233,190 |  | 90.7 | % |  | $ | 4,403,909 |  | 94.3 | %
Special mention | 54,627 |  | 1.9 | % |  | 25,368 |  | 1.7 | % |  | 7,349 |  | 2.8 | % |  | 87,344 |  | 1.8 | %
Substandard | 90,913 |  | 3.1 | % |  | 73,621 |  | 4.9 | % |  | 16,658 |  | 6.5 | % |  | 181,192 |  | 3.9 | %
Total | $ | 2,921,832 |  | 100.0 | % |  | $ | 1,493,416 |  | 100.0 | % |  | $ | 257,197 |  | 100.0 | % |  | $ | 4,672,445 |  | 100.0 | %
Schedule of Recorded Investment in Consumer Loan Classes by Performing and Nonperforming Status | The following tables present the recorded investment in consumer loan classes by performing and nonperforming status as of the dates presented:
| March 31, 2019
(dollars in thousands) | Residential Mortgage | % of Total |  | Home Equity | % of Total |  | Installment and Other Consumer | % of Total |  | Consumer Construction | % of Total |  | Total | % of Total
Performing | $ | 723,284 |  | 99.1 | % |  | $ | 459,420 |  | 99.1 | % |  | $ | 70,931 |  | 100.0 | % |  | $ | 10,722 |  | 100.0 | % |  | $ | 1,264,357 |  | 99.2 | %
Nonperforming | 6,630 |  | 0.9 | % |  | 4,146 |  | 0.9 | % |  | 29 |  | — | % |  | — |  | — | % |  | 10,805 |  | 0.8 | %
Total | $ | 729,914 |  | 100.0 | % |  | $ | 463,566 |  | 100.0 | % |  | $ | 70,960 |  | 100.0 | % |  | $ | 10,722 |  | 100.0 | % |  | $ | 1,275,162 |  | 100.0 | %
| December 31, 2018
(dollars in thousands) | Residential Mortgage | % of Total |  | Home Equity | % of Total |  | Installment and Other Consumer | % of Total |  | Consumer Construction | % of Total |  | Total | % of Total
Performing | $ | 719,551 |  | 99.0 | % |  | $ | 467,864 |  | 99.2 | % |  | $ | 67,504 |  | 99.9 | % |  | $ | 8,416 |  | 100.0 | % |  | $ | 1,263,335 |  | 99.1 | %
Nonperforming | 7,128 |  | 1.0 | % |  | 3,698 |  | 0.8 | % |  | 42 |  | 0.1 | % |  | — |  | — | % |  | 10,868 |  | 0.9 | %
Total | $ | 726,679 |  | 100.0 | % |  | $ | 471,562 |  | 100.0 | % |  | $ | 67,546 |  | 100.0 | % |  | $ | 8,416 |  | 100.0 | % |  | $ | 1,274,203 |  | 100.0 | %
Schedule of Investments in Loans Considered to be Impaired and Related Information on Impaired Loans | The following tables summarize average recorded investment in and interest income recognized on loans considered to be impaired for the periods presented:
| Three Months Ended
| March 31, 2019 |  | March 31, 2018
(dollars in thousands) | Average Recorded Investment |  | Interest Income Recognized |  | Average Recorded Investment |  | Interest Income Recognized
With a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | $ | 12,983 |  |  | $ | 400 |  |  | $ | — |  |  | $ | — |
Commercial and industrial | 980 |  |  | 35 |  |  | 586 |  |  | 11 |
Commercial construction | 489 |  |  | — |  |  | — |  |  | — |
Consumer real estate | 14 |  |  | 1 |  |  | — |  |  | — |
Other consumer | 10 |  |  | 1 |  |  | 42 |  |  | 1 |
Total with a Related Allowance Recorded | 14,476 |  |  | 437 |  |  | 628 |  |  | 12 |
Without a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | 15,107 |  |  | 144 |  |  | 3,817 |  |  | 43 |
Commercial and industrial | 12,780 |  |  | 209 |  |  | 6,688 |  |  | 110 |
Commercial construction | 2,319 |  |  | 140 |  |  | 3,446 |  |  | 36 |
Consumer real estate | 8,846 |  |  | 417 |  |  | 10,816 |  |  | 138 |
Other consumer | 4 |  |  | — |  |  | 12 |  |  | — |
Total without a Related Allowance Recorded | 39,056 |  |  | 910 |  |  | 24,779 |  |  | 327 |
Total: |  |  |  |  |  |  |
Commercial real estate | 28,090 |  |  | 544 |  |  | 3,817 |  |  | 43 |
Commercial and industrial | 13,760 |  |  | 244 |  |  | 7,274 |  |  | 121 |
Commercial construction | 2,808 |  |  | 140 |  |  | 3,446 |  |  | 36 |
Consumer real estate | 8,860 |  |  | 418 |  |  | 10,816 |  |  | 138 |
Other consumer | 14 |  |  | 1 |  |  | 54 |  |  | 1 |
Total | $ | 53,532 |  |  | $ | 1,347 |  |  | $ | 25,407 |  |  | $ | 339 |
The following table summarizes investments in loans considered to be impaired and related information on those impaired loans as of the dates presented:
| March 31, 2019 |  | December 31, 2018
(dollars in thousands) | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance
With a related allowance recorded: |  |  |  |  |  |  |  |  |  |  |
Commercial real estate | $ | 12,965 |  |  | $ | 12,965 |  |  | $ | 2,046 |  |  | $ | 7,733 |  |  | $ | 7,733 |  |  | $ | 1,295 |
Commercial and industrial | 976 |  |  | 984 |  |  | 873 |  |  | 884 |  |  | 893 |  |  | 360 |
Commercial construction | 489 |  |  | 490 |  |  | 87 |  |  | 489 |  |  | 489 |  |  | 87 |
Consumer real estate | 14 |  |  | 14 |  |  | 9 |  |  | 15 |  |  | 14 |  |  | 10 |
Other consumer | 8 |  |  | 8 |  |  | 8 |  |  | 11 |  |  | 12 |  |  | 11 |
Total with a Related Allowance Recorded | 14,452 |  |  | 14,461 |  |  | 3,023 |  |  | 9,132 |  |  | 9,141 |  |  | 1,763 |
Without a related allowance recorded: |  |  |  |  |  |  |  |  |  |  |
Commercial real estate | 15,068 |  |  | 17,895 |  |  | — |  |  | 3,636 |  |  | 4,046 |  |  | — |
Commercial and industrial | 15,934 |  |  | 22,551 |  |  | — |  |  | 12,788 |  |  | 14,452 |  |  | — |
Commercial construction | 2,319 |  |  | 3,828 |  |  | — |  |  | 15,286 |  |  | 19,198 |  |  | — |
Consumer real estate | 8,527 |  |  | 9,507 |  |  | — |  |  | 8,659 |  |  | 9,635 |  |  | — |
Other consumer | 4 |  |  | 10 |  |  | — |  |  | 5 |  |  | 18 |  |  | — |
Total without a Related Allowance Recorded | 41,852 |  |  | 53,792 |  |  | — |  |  | 40,374 |  |  | 47,349 |  |  | — |
Total: |  |  |  |  |  |  |  |  |  |  |
Commercial real estate | 28,033 |  |  | 30,860 |  |  | 2,046 |  |  | 11,369 |  |  | 11,779 |  |  | 1,295 |
Commercial and industrial | 16,910 |  |  | 23,535 |  |  | 873 |  |  | 13,672 |  |  | 15,345 |  |  | 360 |
Commercial construction | 2,808 |  |  | 4,318 |  |  | 87 |  |  | 15,775 |  |  | 19,687 |  |  | 87 |
Consumer real estate | 8,541 |  |  | 9,521 |  |  | 9 |  |  | 8,674 |  |  | 9,649 |  |  | 10 |
Other consumer | 12 |  |  | 18 |  |  | 8 |  |  | 16 |  |  | 30 |  |  | 11 |
Total | $ | 56,304 |  |  | $ | 68,252 |  |  | $ | 3,023 |  |  | $ | 49,506 |  |  | $ | 56,490 |  |  | $ | 1,763 |
Schedule of Summary of Allowance for Loan Losses | The following tables detail activity in the ALL for the periods presented:
| Three Months Ended March 31, 2019
(dollars in thousands) | Commercial Real Estate |  | Commercial and Industrial |  | Commercial Construction |  | Consumer Real Estate |  | Other Consumer |  | Total Loans
Balance at beginning of period | $ | 33,707 |  |  | $ | 11,596 |  |  | $ | 7,983 |  |  | $ | 6,187 |  |  | $ | 1,523 |  |  | $ | 60,996 |
Charge-offs | (1 | ) |  | (5,477 | ) |  | — |  |  | (162 | ) |  | (383 | ) |  | (6,023 | )
Recoveries | 122 |  |  | 417 |  |  | — |  |  | 148 |  |  | 100 |  |  | 787 |
Net Recoveries/(Charge-offs) | 121 |  |  | (5,060 | ) |  | — |  |  | (14 | ) |  | (283 | ) |  | (5,236 | )
Provision for loan losses | 1,075 |  |  | 5,460 |  |  | (1,226 | ) |  | 5 |  |  | 335 |  |  | 5,649 |
Balance at End of Period | $ | 34,903 |  |  | $ | 11,996 |  |  | $ | 6,757 |  |  | $ | 6,178 |  |  | $ | 1,575 |  |  | $ | 61,409 |
| Three Months Ended March 31, 2018
(dollars in thousands) | Commercial Real Estate |  | Commercial and Industrial |  | Commercial Construction |  | Consumer Real Estate |  | Other Consumer |  | Total Loans
Balance at beginning of period | $ | 27,235 |  |  | $ | 8,966 |  |  | $ | 13,167 |  |  | $ | 5,479 |  |  | $ | 1,543 |  |  | $ | 56,390 |
Charge-offs | — |  |  | (829 | ) |  | — |  |  | (161 | ) |  | (460 | ) |  | (1,450 | )
Recoveries | 49 |  |  | 117 |  |  | 1,129 |  |  | 238 |  |  | 101 |  |  | 1,634 |
Net Recoveries/(Charge-offs) | 49 |  |  | (712 | ) |  | 1,129 |  |  | 77 |  |  | (359 | ) |  | 184 |
Provision for loan losses | 3,679 |  |  | 2,218 |  |  | (3,575 | ) |  | (138 | ) |  | 288 |  |  | 2,472 |
Balance at End of Period | $ | 30,963 |  |  | $ | 10,472 |  |  | $ | 10,721 |  |  | $ | 5,418 |  |  | $ | 1,472 |  |  | $ | 59,046 |
Schedule of Summary of Allowance for Loan Losses and Recorded Investments | The following tables present the ALL and recorded investments in loans by category as of the periods presented:
| March 31, 2019
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  |  | Collectively Evaluated for Impairment |  |  | Total |  |  | Individually Evaluated for Impairment |  |  | Collectively Evaluated for Impairment |  |  | Total |
Commercial real estate | $ | 2,046 |  |  | $ | 32,857 |  |  | $ | 34,903 |  |  | $ | 28,033 |  |  | $ | 2,873,592 |  |  | $ | 2,901,625 |
Commercial and industrial | 873 |  |  | 11,123 |  |  | 11,996 |  |  | 16,910 |  |  | 1,496,097 |  |  | 1,513,007 |
Commercial construction | 87 |  |  | 6,670 |  |  | 6,757 |  |  | 2,808 |  |  | 242,850 |  |  | 245,658 |
Consumer real estate | 9 |  |  | 6,169 |  |  | 6,178 |  |  | 8,541 |  |  | 1,195,661 |  |  | 1,204,202 |
Other consumer | 8 |  |  | 1,567 |  |  | 1,575 |  |  | 12 |  |  | 70,948 |  |  | 70,960 |
Total | $ | 3,023 |  |  | $ | 58,386 |  |  | $ | 61,409 |  |  | $ | 56,304 |  |  | $ | 5,879,148 |  |  | $ | 5,935,452 |
| December 31, 2018
| Allowance for Loan Losses |  | Portfolio Loans
(dollars in thousands) | Individually Evaluated for Impairment |  |  | Collectively Evaluated for Impairment |  |  | Total |  |  | Individually Evaluated for Impairment |  |  | Collectively Evaluated for Impairment |  |  | Total |
Commercial real estate | $ | 1,295 |  |  | $ | 32,412 |  |  | $ | 33,707 |  |  | $ | 11,369 |  |  | $ | 2,910,463 |  |  | $ | 2,921,832 |
Commercial and industrial | 360 |  |  | 11,236 |  |  | 11,596 |  |  | 13,672 |  |  | 1,479,744 |  |  | 1,493,416 |
Commercial construction | 87 |  |  | 7,896 |  |  | 7,983 |  |  | 15,775 |  |  | 241,422 |  |  | 257,197 |
Consumer real estate | 10 |  |  | 6,177 |  |  | 6,187 |  |  | 8,674 |  |  | 1,197,983 |  |  | 1,206,657 |
Other consumer | 11 |  |  | 1,512 |  |  | 1,523 |  |  | 16 |  |  | 67,530 |  |  | 67,546 |
Total | $ | 1,763 |  |  | $ | 59,233 |  |  | $ | 60,996 |  |  | $ | 49,506 |  |  | $ | 5,897,142 |  |  | $ | 5,946,648 |

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