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Allowance for Loan Losses (Tables) | 6 Months Ended
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Jun. 30, 2016
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:
| June 30, 2016
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 2,367,849 |  | $ | 7,384 |  | $ | 2,666 |  | $ | 10,887 |  | $ | 20,937 |  | $ | 2,388,786 |
Commercial and industrial | 1,366,728 |  | 7,276 |  | 400 |  | 11,342 |  | 19,018 |  | 1,385,746 |
Commercial construction | 382,985 |  | 5,644 |  | 1,311 |  | 8,182 |  | 15,137 |  | 398,122 |
Residential mortgage | 657,352 |  | 1,191 |  | 3,839 |  | 9,283 |  | 14,313 |  | 671,665 |
Home equity | 472,085 |  | 4,223 |  | 728 |  | 3,168 |  | 8,119 |  | 480,204 |
Installment and other consumer | 57,916 |  | 153 |  | 27 |  | 43 |  | 223 |  | 58,139 |
Consumer construction | 5,602 |  | — |  | — |  | — |  | — |  | 5,602 |
Loans held for sale | 11,999 |  | — |  | — |  | — |  | — |  | 11,999 |
Total | $ | 5,322,516 |  | $ | 25,871 |  | $ | 8,971 |  | $ | 42,905 |  | $ | 77,747 |  | $ | 5,400,263 |
| December 31, 2015
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 2,145,655 |  | $ | 11,602 |  | $ | 627 |  | $ | 8,719 |  | $ | 20,948 |  | $ | 2,166,603 |
Commercial and industrial | 1,244,802 |  | 2,453 |  | 296 |  | 9,279 |  | 12,028 |  | 1,256,830 |
Commercial construction | 401,084 |  | 3,517 |  | 90 |  | 8,753 |  | 12,360 |  | 413,444 |
Residential mortgage | 631,085 |  | 1,728 |  | 930 |  | 5,629 |  | 8,287 |  | 639,372 |
Home equity | 465,055 |  | 2,365 |  | 523 |  | 2,902 |  | 5,790 |  | 470,845 |
Installment and other consumer | 73,486 |  | 242 |  | 111 |  | 100 |  | 453 |  | 73,939 |
Consumer construction | 6,579 |  | — |  | — |  | — |  | — |  | 6,579 |
Loans held for sale | 35,179 |  | 94 |  | 48 |  | — |  | 142 |  | 35,321 |
Total | $ | 5,002,925 |  | $ | 22,001 |  | $ | 2,625 |  | $ | 35,382 |  | $ | 60,008 |  | $ | 5,062,933 |
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:
| June 30, 2016
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,314,317 |  | 96.9 | % |  | $ | 1,302,427 |  | 94.0 | % |  | $ | 361,494 |  | 90.8 | % |  | $ | 3,978,238 |  | 95.3 | %
Special mention | 22,277 |  | 0.9 | % |  | 31,865 |  | 2.3 | % |  | 20,228 |  | 5.1 | % |  | 74,370 |  | 1.8 | %
Substandard | 52,192 |  | 2.2 | % |  | 51,454 |  | 3.7 | % |  | 16,400 |  | 4.1 | % |  | 120,046 |  | 2.9 | %
Total | $ | 2,388,786 |  | 100.0 | % |  | $ | 1,385,746 |  | 100.0 | % |  | $ | 398,122 |  | 100.0 | % |  | $ | 4,172,654 |  | 100.0 | %
| December 31, 2015
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,094,851 |  | 96.7 | % |  | $ | 1,182,685 |  | 94.1 | % |  | $ | 375,808 |  | 90.9 | % |  | $ | 3,653,344 |  | 95.2 | %
Special mention | 19,938 |  | 0.9 | % |  | 43,896 |  | 3.5 | % |  | 19,846 |  | 4.8 | % |  | 83,680 |  | 2.2 | %
Substandard | 51,814 |  | 2.4 | % |  | 30,249 |  | 2.4 | % |  | 17,790 |  | 4.3 | % |  | 99,853 |  | 2.6 | %
Total | $ | 2,166,603 |  | 100.0 | % |  | $ | 1,256,830 |  | 100.0 | % |  | $ | 413,444 |  | 100.0 | % |  | $ | 3,836,877 |  | 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:
| June 30, 2016
(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 | $ | 662,382 |  | 98.6 | % | $ | 477,036 |  | 99.3 | % | $ | 58,096 |  | 99.9 | % | $ | 5,602 |  | 100.0 | % | $ | 1,203,116 |  | 99.0 | %
Nonperforming | 9,283 |  | 1.4 | % | 3,168 |  | 0.7 | % | 43 |  | 0.1 | % | — |  | — | % | 12,494 |  | 1.0 | %
Total | $ | 671,665 |  | 100.0 | % | $ | 480,204 |  | 100.0 | % | $ | 58,139 |  | 100.0 | % | $ | 5,602 |  | 100.0 | % | $ | 1,215,610 |  | 100.0 | %
| December 31, 2015
(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 | $ | 633,743 |  | 99.1 | % | $ | 467,943 |  | 99.4 | % | $ | 73,839 |  | 99.8 | % | $ | 6,579 |  | 100.0 | % | $ | 1,182,104 |  | 99.3 | %
Nonperforming | 5,629 |  | 0.9 | % | 2,902 |  | 0.6 | % | 100 |  | 0.2 | % | — |  | — | % | 8,631 |  | 0.7 | %
Total | $ | 639,372 |  | 100.0 | % | $ | 470,845 |  | 100.0 | % | $ | 73,939 |  | 100.0 | % | $ | 6,579 |  | 100.0 | % | $ | 1,190,735 |  | 100.0 | %
Investments in Loans Considered to be Impaired and Related Information on Impaired Loans |
| For the Six Months Ended
| June 30, 2016 | June 30, 2015
(dollars in thousands) | Average Recorded Investment | Interest Income Recognized | Average Recorded Investment | Interest Income Recognized
Without a related allowance recorded: |  |  |  |
Commercial real estate | $ | 14,798 |  | $ | 132 |  | $ | 20,455 |  | $ | 322 |
Commercial and industrial | 11,253 |  | 189 |  | 11,162 |  | 146 |
Commercial construction | 10,669 |  | 108 |  | 6,628 |  | 134 |
Consumer real estate | 11,089 |  | 243 |  | 6,943 |  | 186 |
Other consumer | 40 |  | 1 |  | 86 |  | 4 |
Total without a Related Allowance Recorded | 47,849 |  | 673 |  | 45,274 |  | 792 |
With a related allowance recorded: |  |  |  |
Commercial real estate | — |  | — |  | 211 |  | — |
Commercial and industrial | 4,999 |  | 63 |  | — |  | — |
Commercial construction | 1,244 |  | 12 |  | — |  | — |
Consumer real estate | 30 |  | 1 |  | 122 |  | 3 |
Other consumer | 2 |  | — |  | 4 |  | — |
Total with a Related Allowance Recorded | 6,275 |  | 76 |  | 337 |  | 3 |
Total: |  |  |  |
Commercial real estate | 14,798 |  | 132 |  | 20,666 |  | 322 |
Commercial and industrial | 16,252 |  | 252 |  | 11,162 |  | 146 |
Commercial construction | 11,913 |  | 120 |  | 6,628 |  | 134 |
Consumer real estate | 11,119 |  | 244 |  | 7,065 |  | 189 |
Other consumer | 42 |  | 1 |  | 90 |  | 4 |
Total | $ | 54,124 |  | $ | 749 |  | $ | 45,611 |  | $ | 795 |
The following tables summarize investments in loans considered to be impaired and related information on those impaired loans as of the dates presented:
| June 30, 2016 |  | December 31, 2015
(dollars in thousands) | Recorded Investment | Unpaid Principal Balance | Related Allowance |  | Recorded Investment | Unpaid Principal Balance | Related Allowance
Without a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | $ | 12,326 |  | $ | 22,765 |  | $ | — |  |  | $ | 12,661 |  | $ | 13,157 |  | $ | — |
Commercial and industrial | 11,313 |  | 12,174 |  | — |  |  | 14,417 |  | 15,220 |  | — |
Commercial construction | 9,918 |  | 13,494 |  | — |  |  | 10,998 |  | 14,200 |  | — |
Consumer real estate | 10,983 |  | 11,646 |  | — |  |  | 6,845 |  | 7,521 |  | — |
Other consumer | 34 |  | 41 |  | — |  |  | 111 |  | 188 |  | — |
Total without a Related Allowance Recorded | 44,574 |  | 60,120 |  | — |  |  | 45,032 |  | 50,286 |  | — |
With a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | — |  | — |  | — |  |  | — |  | — |  | — |
Commercial and industrial | 4,499 |  | 4,984 |  | 1,991 |  |  | — |  | — |  | — |
Commercial construction | 1,064 |  | 1,635 |  | 141 |  |  | 500 |  | 1,350 |  | 3 |
Consumer real estate | 29 |  | 29 |  | 29 |  |  | 116 |  | 116 |  | 32 |
Other consumer | 1 |  | 1 |  | 1 |  |  | 2 |  | 2 |  | 2 |
Total with a Related Allowance Recorded | 5,593 |  | 6,649 |  | 2,162 |  |  | 618 |  | 1,468 |  | 37 |
Total: |  |  |  |  |  |  |
Commercial real estate | 12,326 |  | 22,765 |  | — |  |  | 12,661 |  | 13,157 |  | — |
Commercial and industrial | 15,812 |  | 17,158 |  | 1,991 |  |  | 14,417 |  | 15,220 |  | — |
Commercial construction | 10,982 |  | 15,129 |  | 141 |  |  | 11,498 |  | 15,550 |  | 3 |
Consumer real estate | 11,012 |  | 11,675 |  | 29 |  |  | 6,961 |  | 7,637 |  | 32 |
Other consumer | 35 |  | 42 |  | 1 |  |  | 113 |  | 190 |  | 2 |
Total | $ | 50,167 |  | $ | 66,769 |  | $ | 2,162 |  |  | $ | 45,650 |  | $ | 51,754 |  | $ | 37 |
The following tables summarize investments in loans considered to be impaired and related information on those impaired loans for the periods presented:
| For the Three Months Ended
| June 30, 2016 | June 30, 2015
(dollars in thousands) | Average Recorded Investment | Interest Income Recognized | Average Recorded Investment | Interest Income Recognized
Without a related allowance recorded: |  |  |  |
Commercial real estate | $ | 14,619 |  | $ | 64 |  | $ | 19,733 |  | $ | 158 |
Commercial and industrial | 10,959 |  | 98 |  | 10,782 |  | 84 |
Commercial construction | 10,625 |  | 48 |  | 8,119 |  | 81 |
Consumer real estate | 11,028 |  | 107 |  | 6,891 |  | 91 |
Other consumer | 38 |  | — |  | 126 |  | 4 |
Total without a Related Allowance Recorded | 47,269 |  | 317 |  | 45,651 |  | 418 |
With a related allowance recorded: |  |  |  |
Commercial real estate | — |  | — |  | 420 |  | — |
Commercial and industrial | 4,617 |  | 31 |  | — |  | — |
Commercial construction | 1,232 |  | 6 |  | — |  | — |
Consumer real estate | 29 |  | 1 |  | 121 |  | 2 |
Other consumer | 1 |  | — |  | 4 |  | — |
Total with a Related Allowance Recorded | 5,879 |  | 38 |  | 545 |  | 2 |
Total: |  |  |  |
Commercial real estate | 14,619 |  | 64 |  | 20,153 |  | 158 |
Commercial and industrial | 15,576 |  | 129 |  | 10,782 |  | 84 |
Commercial construction | 11,857 |  | 54 |  | 8,119 |  | 81 |
Consumer real estate | 11,057 |  | 108 |  | 7,012 |  | 93 |
Other consumer | 39 |  | — |  | 130 |  | 4 |
Total | $ | 53,148 |  | $ | 355 |  | $ | 46,196 |  | $ | 420 |
Summary of Allowance for Loan Losses | The following tables detail activity in the ALL for the periods presented:
| Three Months Ended June 30, 2016
(dollars in thousands) | Commercial Real Estate |  |  | Commercial and Industrial |  |  | Commercial Construction |  |  | Consumer Real Estate |  |  | Other Consumer |  |  | Total Loans |
Balance at beginning of period | $ | 15,266 |  |  | $ | 14,740 |  |  | $ | 10,825 |  |  | $ | 8,261 |  |  | $ | 1,255 |  |  | $ | 50,347 |
Charge-offs | (1,662 | ) |  | (136 | ) |  | (945 | ) |  | (290 | ) |  | (463 | ) |  | (3,496 | )
Recoveries | 38 |  |  | 217 |  |  | 2 |  |  | 134 |  |  | 123 |  |  | 514 |
Net (Charge-offs)/ Recoveries | (1,624 | ) |  | 81 |  |  | (943 | ) |  | (156 | ) |  | (340 | ) |  | (2,982 | )
Provision for loan losses | 2,336 |  |  | (50 | ) |  | 1,819 |  |  | 313 |  |  | 430 |  |  | 4,848 |
Balance at End of Period | $ | 15,978 |  |  | $ | 14,771 |  |  | $ | 11,701 |  |  | $ | 8,418 |  |  | $ | 1,345 |  |  | $ | 52,213 |
| Three Months Ended June 30, 2015
(dollars in thousands) | Commercial Real Estate |  |  | Commercial and Industrial |  |  | Commercial Construction |  |  | Consumer Real Estate |  |  | Other Consumer |  |  | Total Loans |
Balance at beginning of period | $ | 19,071 |  |  | $ | 13,711 |  |  | $ | 6,869 |  |  | $ | 6,723 |  |  | $ | 1,732 |  |  | $ | 48,106 |
Charge-offs | (310 | ) |  | (992 | ) |  | — |  |  | (177 | ) |  | (276 | ) |  | (1,755 | )
Recoveries | 73 |  |  | 89 |  |  | 1 |  |  | 112 |  |  | 129 |  |  | 404 |
Net (Charge-offs)/ Recoveries | (237 | ) |  | (903 | ) |  | 1 |  |  | (65 | ) |  | (147 | ) |  | (1,351 | )
Provision for loan losses | 184 |  |  | 500 |  |  | 801 |  |  | 369 |  |  | 205 |  |  | 2,059 |
Balance at End of Period | $ | 19,018 |  |  | $ | 13,308 |  |  | $ | 7,671 |  |  | $ | 7,027 |  |  | $ | 1,790 |  |  | $ | 48,814 |
| Six Months Ended June 30, 2016
(dollars in thousands) | Commercial Real Estate |  | Commercial and Industrial |  | Commercial Construction |  | Consumer Real Estate |  | Other Consumer |  | Total Loans
Balance at beginning of period | $ | 15,043 |  |  | $ | 10,853 |  |  | $ | 12,625 |  |  | $ | 8,400 |  |  | $ | 1,226 |  |  | $ | 48,147 |
Charge-offs | (1,715 | ) |  | (2,830 | ) |  | (945 | ) |  | (522 | ) |  | (1,111 | ) |  | (7,123 | )
Recoveries | 398 |  |  | 420 |  |  | 3 |  |  | 298 |  |  | 207 |  |  | 1,326 |
Net (Charge-offs)/Recoveries | (1,317 | ) |  | (2,410 | ) |  | (942 | ) |  | (224 | ) |  | (904 | ) |  | (5,797 | )
Provision for loan losses | 2,252 |  |  | 6,328 |  |  | 18 |  |  | 242 |  |  | 1,023 |  |  | 9,863 |
Balance at End of Period | $ | 15,978 |  |  | $ | 14,771 |  |  | $ | 11,701 |  |  | $ | 8,418 |  |  | $ | 1,345 |  |  | $ | 52,213 |
| Six Months Ended June 30, 2015
(dollars in thousands) | Commercial Real Estate |  | Commercial and Industrial |  | Commercial Construction |  | Consumer Real Estate |  | Other Consumer |  | Total Loans
Balance at beginning of period | $ | 20,164 |  |  | $ | 13,668 |  |  | $ | 6,093 |  |  | $ | 6,333 |  |  | $ | 1,653 |  |  | $ | 47,911 |
Charge-offs | (376 | ) |  | (1,698 | ) |  | — |  |  | (552 | ) |  | (579 | ) |  | (3,205 | )
Recoveries | 176 |  |  | 203 |  |  | 2 |  |  | 248 |  |  | 213 |  |  | 842 |
Net (Charge-offs)/Recoveries | (200 | ) |  | (1,495 | ) |  | 2 |  |  | (304 | ) |  | (366 | ) |  | (2,363 | )
Provision for loan losses | (946 | ) |  | 1,135 |  |  | 1,576 |  |  | 998 |  |  | 503 |  |  | 3,266 |
Balance at End of Period | $ | 19,018 |  |  | $ | 13,308 |  |  | $ | 7,671 |  |  | $ | 7,027 |  |  | $ | 1,790 |  |  | $ | 48,814 |
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:
| June 30, 2016
| 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 | $ | — |  | $ | 15,978 |  | $ | 15,978 |  |  | $ | 12,326 |  | $ | 2,376,460 |  | $ | 2,388,786 |
Commercial and industrial | 1,991 |  | 12,780 |  | 14,771 |  |  | 15,812 |  | 1,369,934 |  | 1,385,746 |
Commercial construction | 141 |  | 11,560 |  | 11,701 |  |  | 10,982 |  | 387,140 |  | 398,122 |
Consumer real estate | 29 |  | 8,389 |  | 8,418 |  |  | 11,012 |  | 1,146,459 |  | 1,157,471 |
Other consumer | 1 |  | 1,344 |  | 1,345 |  |  | 35 |  | 58,104 |  | 58,139 |
Total | $ | 2,162 |  | $ | 50,051 |  | $ | 52,213 |  |  | $ | 50,167 |  | $ | 5,338,097 |  | $ | 5,388,264 |
| December 31, 2015
| 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 | $ | — |  | $ | 15,043 |  | $ | 15,043 |  |  | $ | 12,661 |  | $ | 2,153,942 |  | $ | 2,166,603 |
Commercial and industrial | — |  | 10,853 |  | 10,853 |  |  | 14,417 |  | 1,242,413 |  | 1,256,830 |
Commercial construction | 3 |  | 12,622 |  | 12,625 |  |  | 11,498 |  | 401,946 |  | 413,444 |
Consumer real estate | 32 |  | 8,368 |  | 8,400 |  |  | 6,961 |  | 1,109,835 |  | 1,116,796 |
Other consumer | 2 |  | 1,224 |  | 1,226 |  |  | 113 |  | 73,826 |  | 73,939 |
Total | $ | 37 |  | $ | 48,110 |  | $ | 48,147 |  |  | $ | 45,650 |  | $ | 4,981,962 |  | $ | 5,027,612 |

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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=32702940&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=66008989&loc=SL6953659-111524 + Details
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