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Allowance for Loan Losses (Tables) | 3 Months Ended
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Mar. 31, 2018
Receivables [Abstract] |
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, 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 | $ | 2,755,336 |  |  | $ | 1,162 |  |  | $ | 441 |  |  | $ | 3,952 |  |  | $ | 5,555 |  |  | $ | 2,760,891 |
Commercial and industrial | 1,401,154 |  |  | 1,059 |  |  | 120 |  |  | 4,617 |  |  | 5,796 |  |  | 1,406,950 |
Commercial construction | 321,900 |  |  | 368 |  |  | — |  |  | 1,873 |  |  | 2,241 |  |  | 324,141 |
Residential mortgage | 682,092 |  |  | 3,125 |  |  | 453 |  |  | 6,715 |  |  | 10,293 |  |  | 692,385 |
Home equity | 468,762 |  |  | 1,603 |  |  | 376 |  |  | 4,109 |  |  | 6,088 |  |  | 474,850 |
Installment and other consumer | 66,551 |  |  | 189 |  |  | 81 |  |  | 69 |  |  | 339 |  |  | 66,890 |
Consumer construction | 4,506 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,506 |
Loans held for sale | 3,283 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 3,283 |
Total | $ | 5,703,584 |  |  | $ | 7,506 |  |  | $ | 1,471 |  |  | $ | 21,335 |  |  | $ | 30,312 |  |  | $ | 5,733,896 |
| December 31, 2017
(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 | $ | 2,681,395 |  |  | $ | 997 |  |  | $ | 134 |  |  | $ | 3,468 |  |  | $ | 4,599 |  |  | $ | 2,685,994 |
Commercial and industrial | 1,426,754 |  |  | 420 |  |  | 446 |  |  | 5,646 |  |  | 6,512 |  |  | 1,433,266 |
Commercial construction | 377,968 |  |  | 2,473 |  |  | 20 |  |  | 3,873 |  |  | 6,366 |  |  | 384,334 |
Residential mortgage | 687,195 |  |  | 2,975 |  |  | 1,439 |  |  | 7,165 |  |  | 11,579 |  |  | 698,774 |
Home equity | 480,956 |  |  | 2,065 |  |  | 590 |  |  | 3,715 |  |  | 6,370 |  |  | 487,326 |
Installment and other consumer | 66,770 |  |  | 193 |  |  | 170 |  |  | 71 |  |  | 434 |  |  | 67,204 |
Consumer construction | 4,551 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,551 |
Loans held for sale | 4,485 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,485 |
Total | $ | 5,730,074 |  |  | $ | 9,123 |  |  | $ | 2,799 |  |  | $ | 23,938 |  |  | $ | 35,860 |  |  | $ | 5,765,934 |
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, 2018
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,625,232 |  | 95.1 | % |  | $ | 1,294,478 |  | 92.0 | % |  | $ | 303,985 |  | 93.8 | % |  | $ | 4,223,695 |  | 94.0 | %
Special mention | 68,204 |  | 2.5 | % |  | 65,557 |  | 4.7 | % |  | 14,919 |  | 4.6 | % |  | 148,680 |  | 3.3 | %
Substandard | 67,455 |  | 2.4 | % |  | 46,915 |  | 3.3 | % |  | 5,237 |  | 1.6 | % |  | 119,607 |  | 2.7 | %
Total | $ | 2,760,891 |  | 100.0 | % |  | $ | 1,406,950 |  | 100.0 | % |  | $ | 324,141 |  | 100.0 | % |  | $ | 4,491,982 |  | 100.0 | %
| December 31, 2017
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,588,847 |  | 96.4 | % |  | $ | 1,345,810 |  | 93.9 | % |  | $ | 368,105 |  | 95.8 | % |  | $ | 4,302,762 |  | 95.5 | %
Special mention | 66,436 |  | 2.5 | % |  | 54,320 |  | 3.8 | % |  | 9,345 |  | 2.4 | % |  | 130,101 |  | 2.9 | %
Substandard | 30,711 |  | 1.1 | % |  | 33,136 |  | 2.3 | % |  | 6,884 |  | 1.8 | % |  | 70,731 |  | 1.6 | %
Total | $ | 2,685,994 |  | 100.0 | % |  | $ | 1,433,266 |  | 100.0 | % |  | $ | 384,334 |  | 100.0 | % |  | $ | 4,503,594 |  | 100.0 | %
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, 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 | $ | 685,670 |  | 99.0 | % |  | $ | 470,741 |  | 99.1 | % |  | $ | 66,821 |  | 99.9 | % |  | $ | 4,506 |  | 100.0 | % |  | $ | 1,227,738 |  | 99.1 | %
Nonperforming | 6,715 |  | 1.0 | % |  | 4,109 |  | 0.9 | % |  | 69 |  | 0.1 | % |  | — |  | — | % |  | 10,893 |  | 0.9 | %
Total | $ | 692,385 |  | 100.0 | % |  | $ | 474,850 |  | 100.0 | % |  | $ | 66,890 |  | 100.0 | % |  | $ | 4,506 |  | 100.0 | % |  | $ | 1,238,631 |  | 100.0 | %
| December 31, 2017
(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 | $ | 691,609 |  | 99.0 | % |  | $ | 483,611 |  | 99.2 | % |  | $ | 67,133 |  | 99.9 | % |  | $ | 4,551 |  | 100.0 | % |  | $ | 1,246,904 |  | 99.1 | %
Nonperforming | 7,165 |  | 1.0 | % |  | 3,715 |  | 0.8 | % |  | 71 |  | 0.1 | % |  | — |  | — | % |  | 10,951 |  | 0.9 | %
Total | $ | 698,774 |  | 100.0 | % |  | $ | 487,326 |  | 100.0 | % |  | $ | 67,204 |  | 100.0 | % |  | $ | 4,551 |  | 100.0 | % |  | $ | 1,257,855 |  | 100.0 | %
Investments in Loans Considered to be Impaired and Related Information on Impaired Loans | The following tables summarize investments in loans considered to be impaired and related information on those impaired loans as of the dates presented:
| March 31, 2018 |  | December 31, 2017
(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 | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial and industrial | 656 |  |  | 671 |  |  | 537 |  |  | 1,735 |  |  | 1,787 |  |  | 29 |
Commercial construction | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Consumer real estate | — |  |  | — |  |  | — |  |  | 21 |  |  | 21 |  |  | 21 |
Other consumer | 39 |  |  | 39 |  |  | 39 |  |  | 27 |  |  | 27 |  |  | 27 |
Total with a Related Allowance Recorded | 695 |  |  | 710 |  |  | 576 |  |  | 1,783 |  |  | 1,835 |  |  | 77 |
Without a related allowance recorded: |  |  |  |  |  |  |  |  |  |  |
Commercial real estate | 3,774 |  |  | 4,034 |  |  | — |  |  | 3,546 |  |  | 3,811 |  |  | — |
Commercial and industrial | 11,917 |  |  | 13,972 |  |  | — |  |  | 5,549 |  |  | 7,980 |  |  | — |
Commercial construction | 3,444 |  |  | 4,954 |  |  | — |  |  | 5,464 |  |  | 8,132 |  |  | — |
Consumer real estate | 10,052 |  |  | 10,987 |  |  | — |  |  | 10,467 |  |  | 11,357 |  |  | — |
Other consumer | 10 |  |  | 17 |  |  | — |  |  | 14 |  |  | 22 |  |  | — |
Total without a Related Allowance Recorded | 29,197 |  |  | 33,964 |  |  | — |  |  | 25,040 |  |  | 31,302 |  |  | — |
Total: |  |  |  |  |  |  |  |  |  |  |
Commercial real estate | 3,774 |  |  | 4,034 |  |  | — |  |  | 3,546 |  |  | 3,811 |  |  | — |
Commercial and industrial | 12,573 |  |  | 14,643 |  |  | 537 |  |  | 7,284 |  |  | 9,767 |  |  | 29 |
Commercial construction | 3,444 |  |  | 4,954 |  |  | — |  |  | 5,464 |  |  | 8,132 |  |  | — |
Consumer real estate | 10,052 |  |  | 10,987 |  |  | — |  |  | 10,488 |  |  | 11,378 |  |  | 21 |
Other consumer | 49 |  |  | 56 |  |  | 39 |  |  | 41 |  |  | 49 |  |  | 27 |
Total | $ | 29,892 |  |  | $ | 34,674 |  |  | $ | 576 |  |  | $ | 26,823 |  |  | $ | 33,137 |  |  | $ | 77 |
The following table summarizes average recorded investment in and interest income recognized on loans considered to be impaired for the periods presented:
| Three Months Ended
| March 31, 2018 |  | March 31, 2017
(dollars in thousands) | Average Recorded Investment |  | Interest Income Recognized |  | Average Recorded Investment |  | Interest Income Recognized
With a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial and industrial | 586 |  |  | 11 |  |  | 10,008 |  |  | 72 |
Commercial construction | — |  |  | — |  |  | — |  |  | — |
Consumer real estate | — |  |  | — |  |  | 26 |  |  | — |
Other consumer | 42 |  |  | 1 |  |  | 1 |  |  | — |
Total with a Related Allowance Recorded | 628 |  |  | 12 |  |  | 10,035 |  |  | 72 |
Without a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | 3,817 |  |  | 43 |  |  | 8,581 |  |  | 33 |
Commercial and industrial | 6,688 |  |  | 110 |  |  | 11,410 |  |  | 43 |
Commercial construction | 3,446 |  |  | 36 |  |  | 6,239 |  |  | 37 |
Consumer real estate | 10,816 |  |  | 138 |  |  | 11,692 |  |  | 129 |
Other consumer | 12 |  |  | — |  |  | 22 |  |  | — |
Total without a Related Allowance Recorded | 24,779 |  |  | 327 |  |  | 37,944 |  |  | 242 |
Total: |  |  |  |  |  |  |
Commercial real estate | 3,817 |  |  | 43 |  |  | 8,581 |  |  | 33 |
Commercial and industrial | 7,274 |  |  | 121 |  |  | 21,418 |  |  | 115 |
Commercial construction | 3,446 |  |  | 36 |  |  | 6,239 |  |  | 37 |
Consumer real estate | 10,816 |  |  | 138 |  |  | 11,718 |  |  | 129 |
Other consumer | 54 |  |  | 1 |  |  | 23 |  |  | — |
Total | $ | 25,407 |  |  | $ | 339 |  |  | $ | 47,979 |  |  | $ | 314 |
Summary of Allowance for Loan Losses | The following tables detail activity in the ALL for the periods presented:
| 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 (Charge-offs)/ Recoveries | 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 |
| Three Months Ended March 31, 2017
(dollars in thousands) | Commercial Real Estate |  | Commercial and Industrial |  | Commercial Construction |  | Consumer Real Estate |  | Other Consumer |  | Total Loans
Balance at beginning of period | $ | 19,976 |  |  | $ | 10,810 |  |  | $ | 13,999 |  |  | $ | 6,095 |  |  | $ | 1,895 |  |  | $ | 52,775 |
Charge-offs | (390 | ) |  | (715 | ) |  | (644 | ) |  | (759 | ) |  | (434 | ) |  | (2,942 | )
Recoveries | 78 |  |  | 187 |  |  | 256 |  |  | 103 |  |  | 176 |  |  | 800 |
Net (Charge-offs)/ Recoveries | (312 | ) |  | (528 | ) |  | (388 | ) |  | (656 | ) |  | (258 | ) |  | (2,142 | )
Provision for loan losses | 906 |  |  | 2,962 |  |  | 491 |  |  | 517 |  |  | 307 |  |  | 5,183 |
Balance at End of Period | $ | 20,570 |  |  | $ | 13,244 |  |  | $ | 14,102 |  |  | $ | 5,956 |  |  | $ | 1,944 |  |  | $ | 55,816 |
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, 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 | $ | — |  |  | $ | 30,963 |  |  | $ | 30,963 |  |  | $ | 3,774 |  |  | $ | 2,757,117 |  |  | $ | 2,760,891 |
Commercial and industrial | 537 |  |  | 9,935 |  |  | 10,472 |  |  | 12,573 |  |  | 1,394,377 |  |  | 1,406,950 |
Commercial construction | — |  |  | 10,721 |  |  | 10,721 |  |  | 3,444 |  |  | 320,697 |  |  | 324,141 |
Consumer real estate | — |  |  | 5,418 |  |  | 5,418 |  |  | 10,052 |  |  | 1,161,689 |  |  | 1,171,741 |
Other consumer | 39 |  |  | 1,433 |  |  | 1,472 |  |  | 49 |  |  | 66,841 |  |  | 66,890 |
Total | $ | 576 |  |  | $ | 58,470 |  |  | $ | 59,046 |  |  | $ | 29,892 |  |  | $ | 5,700,721 |  |  | $ | 5,730,613 |
| December 31, 2017
| 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 | $ | — |  |  | $ | 27,235 |  |  | $ | 27,235 |  |  | $ | 3,546 |  |  | $ | 2,682,448 |  |  | $ | 2,685,994 |
Commercial and industrial | 29 |  |  | 8,937 |  |  | 8,966 |  |  | 7,284 |  |  | 1,425,982 |  |  | 1,433,266 |
Commercial construction | — |  |  | 13,167 |  |  | 13,167 |  |  | 5,464 |  |  | 378,870 |  |  | 384,334 |
Consumer real estate | 21 |  |  | 5,458 |  |  | 5,479 |  |  | 10,488 |  |  | 1,180,163 |  |  | 1,190,651 |
Other consumer | 27 |  |  | 1,516 |  |  | 1,543 |  |  | 41 |  |  | 67,163 |  |  | 67,204 |
Total | $ | 77 |  |  | $ | 56,313 |  |  | $ | 56,390 |  |  | $ | 26,823 |  |  | $ | 5,734,626 |  |  | $ | 5,761,449 |

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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=82894031&loc=SL6953803-111525 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524 + Details
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- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
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