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Allowance for Loan Losses (Tables) | 3 Months Ended
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Mar. 31, 2015
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 March 31, 2015 and December 31, 2014:
| March 31, 2015
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | 90 Days Past Due(1) | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 2,138,815 |  | $ | 2,955 |  | $ | 522 |  | $ | 1,735 |  | $ | 8,386 |  | $ | 13,598 |  | $ | 2,152,413 |
Commercial and industrial | 1,202,897 |  | 4,089 |  | 517 |  | — |  | 3,550 |  | 8,156 |  | 1,211,053 |
Commercial construction | 281,084 |  | 969 |  | — |  | 2,140 |  | 1,973 |  | 5,082 |  | 286,166 |
Residential mortgage | 516,515 |  | 1,548 |  | 63 |  | 1,154 |  | 2,226 |  | 4,991 |  | 521,506 |
Home equity | 438,629 |  | 1,583 |  | 198 |  | — |  | 1,986 |  | 3,767 |  | 442,396 |
Installment and other consumer | 65,465 |  | 249 |  | 27 |  | — |  | 13 |  | 289 |  | 65,754 |
Consumer construction | 4,410 |  | — |  | — |  | — |  | — |  | — |  | 4,410 |
Loans held for sale | 6,126 |  | — |  | — |  | — |  | — |  | — |  | 6,126 |
Totals | $ | 4,653,941 |  | $ | 11,393 |  | $ | 1,327 |  | $ | 5,029 |  | $ | 18,134 |  | $ | 35,883 |  | $ | 4,689,824 |
(1)Represents acquired loans that were recorded at fair value at the acquisition date.
| December 31, 2014
(dollars in thousands) | Current | 30-59 Days Past Due | 60-89 Days Past Due | 90 Days Past Due | Nonaccrual | Total Past Due | Total Loans
Commercial real estate | $ | 1,674,930 |  | $ | 2,548 |  | $ | 323 |  | $ | — |  | $ | 4,435 |  | $ | 7,306 |  | $ | 1,682,236 |
Commercial and industrial | 991,136 |  | 1,227 |  | 153 |  | — |  | 1,622 |  | 3,002 |  | 994,138 |
Commercial construction | 214,174 |  | — |  | — |  | — |  | 1,974 |  | 1,974 |  | 216,148 |
Residential mortgage | 485,465 |  | 565 |  | 1,220 |  | — |  | 2,336 |  | 4,121 |  | 489,586 |
Home equity | 414,303 |  | 1,756 |  | 445 |  | — |  | 2,059 |  | 4,260 |  | 418,563 |
Installment and other consumer | 65,111 |  | 352 |  | 73 |  | — |  | 31 |  | 456 |  | 65,567 |
Consumer construction | 2,508 |  | — |  | — |  | — |  | — |  | — |  | 2,508 |
Loans held for sale | 2,970 |  | — |  | — |  | — |  | — |  | — |  | 2,970 |
Totals | $ | 3,850,597 |  | $ | 6,448 |  | $ | 2,214 |  | $ | — |  | $ | 12,457 |  | $ | 21,119 |  | $ | 3,871,716 |
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, 2015
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 2,073,492 |  | 96.3 | % |  | $ | 1,137,101 |  | 93.9 | % |  | $ | 247,967 |  | 86.7 | % |  | $ | 3,458,560 |  | 94.8 | %
Special mention | 25,204 |  | 1.2 | % |  | 55,529 |  | 4.6 | % |  | 20,600 |  | 7.2 | % |  | 101,333 |  | 2.8 | %
Substandard | 53,717 |  | 2.5 | % |  | 18,423 |  | 1.5 | % |  | 17,599 |  | 6.1 | % |  | 89,739 |  | 2.4 | %
Total | $ | 2,152,413 |  | 100 | % |  | $ | 1,211,053 |  | 100.0 | % |  | $ | 286,166 |  | 100.0 | % |  | $ | 3,649,632 |  | 100.0 | %
| December 31, 2014
(dollars in thousands) | Commercial Real Estate | % of Total |  | Commercial and Industrial | % of Total |  | Commercial Construction | % of Total |  | Total | % of Total
Pass | $ | 1,635,132 |  | 97.2 | % |  | $ | 948,663 |  | 95.4 | % |  | $ | 196,520 |  | 90.9 | % |  | $ | 2,780,315 |  | 96.1 | %
Special mention | 23,597 |  | 1.4 | % |  | 30,357 |  | 3.1 | % |  | 12,014 |  | 5.6 | % |  | 65,968 |  | 2.3 | %
Substandard | 23,507 |  | 1.4 | % |  | 15,118 |  | 1.5 | % |  | 7,614 |  | 3.5 | % |  | 46,239 |  | 1.6 | %
Total | $ | 1,682,236 |  | 100.0 | % |  | $ | 994,138 |  | 100.0 | % |  | $ | 216,148 |  | 100.0 | % |  | $ | 2,892,522 |  | 100.0 | %
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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, 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 | $ | 519,280 |  | 99.6 | % | $ | 440,410 |  | 99.6 | % | $ | 65,741 |  | 100.0 | % | $ | 4,410 |  | 100.0 | % | $ | 1,029,841 |  | 99.6 | %
Nonperforming | 2,226 |  | 0.4 | % | 1,986 |  | 0.4 | % | 13 |  | — | % | — |  | — | % | 4,225 |  | 0.4 | %
Total | $ | 521,506 |  | 100.0 | % | $ | 442,396 |  | 100.0 | % | $ | 65,754 |  | 100.0 | % | $ | 4,410 |  | 100.0 | % | $ | 1,034,066 |  | 100.0 | %
| December 31, 2014
(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 | $ | 487,250 |  | 99.5 | % | $ | 416,504 |  | 99.5 | % | $ | 65,536 |  | 99.9 | % | $ | 2,508 |  | 100.0 | % | $ | 971,798 |  | 99.5 | %
Nonperforming | 2,336 |  | 0.5 | % | 2,059 |  | 0.5 | % | 31 |  | 0.1 | % | — |  | — | % | 4,426 |  | 0.5 | %
Total | $ | 489,586 |  | 100.0 | % | $ | 418,563 |  | 100.0 | % | $ | 65,567 |  | 100.0 | % | $ | 2,508 |  | 100.0 | % | $ | 976,224 |  | 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 the related information on those impaired loans as of the dates presented:
| March 31, 2015 |  | December 31, 2014
(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 | $ | 22,515 |  | $ | 27,937 |  | $ | — |  |  | $ | 19,890 |  | $ | 25,262 |  | $ | — |
Commercial and industrial | 10,338 |  | 11,238 |  | — |  |  | 9,218 |  | 9,449 |  | — |
Commercial construction | 7,696 |  | 11,385 |  | — |  |  | 7,605 |  | 11,293 |  | — |
Consumer real estate | 7,039 |  | 7,637 |  | — |  |  | 7,159 |  | 7,733 |  | — |
Other consumer | 31 |  | 34 |  | — |  |  | 42 |  | 48 |  | — |
Total without a Related Allowance Recorded | 47,619 |  | 58,231 |  | — |  |  | 43,914 |  | 53,785 |  | — |
With a related allowance recorded: |  |  |  |  |  |  |
Commercial real estate | 811 |  | 811 |  | 39 |  |  | — |  | — |  | — |
Commercial and industrial | — |  | — |  | — |  |  | — |  | — |  | — |
Commercial construction | — |  | — |  | — |  |  | — |  | — |  | — |
Consumer real estate | 41 |  | 41 |  | 41 |  |  | 43 |  | 43 |  | 43 |
Other consumer | 18 |  | 18 |  | 8 |  |  | 20 |  | 20 |  | 11 |
Total with a Related Allowance Recorded | 870 |  | 870 |  | 88 |  |  | 63 |  | 63 |  | 54 |
Total: |  |  |  |  |  |  |
Commercial real estate | 23,326 |  | 28,748 |  | 39 |  |  | 19,890 |  | 25,262 |  | — |
Commercial and industrial | 10,338 |  | 11,238 |  | — |  |  | 9,218 |  | 9,449 |  | — |
Commercial construction | 7,696 |  | 11,385 |  | — |  |  | 7,605 |  | 11,293 |  | — |
Consumer real estate | 7,080 |  | 7,678 |  | 41 |  |  | 7,202 |  | 7,776 |  | 43 |
Other consumer | 49 |  | 52 |  | 8 |  |  | 62 |  | 68 |  | 11 |
Total | $ | 48,489 |  | $ | 59,101 |  | $ | 88 |  |  | $ | 43,977 |  | $ | 53,848 |  | $ | 54 |
The following tables summarize investments in loans considered to be impaired and related information on those impaired loans the periods presented:
| For the Three Months Ended
| March 31, 2015 | March 31, 2014
(dollars in thousands) | Average Recorded Investment | Interest Income Recognized | Average Recorded Investment | Interest Income Recognized
Without a related allowance recorded: |  |  |  |
Commercial real estate | $ | 22,627 |  | $ | 164 |  | $ | 23,539 |  | $ | 167 |
Commercial and industrial | 10,847 |  | 62 |  | 9,826 |  | 55 |
Commercial construction | 7,704 |  | 53 |  | 8,324 |  | 57 |
Consumer real estate | 7,073 |  | 96 |  | 8,258 |  | 103 |
Other consumer | 34 |  | — |  | 121 |  | 1 |
Total without a Related Allowance Recorded | 48,285 |  | 375 |  | 50,068 |  | 383 |
With a related allowance recorded: |  |  |  |
Commercial real estate | 823 |  | 8 |  | — |  | — |
Commercial and industrial | — |  | — |  | — |  | — |
Commercial construction | — |  | — |  | — |  | — |
Consumer real estate | 42 |  | 1 |  | 51 |  | 1 |
Other consumer | 19 |  | — |  | 32 |  | 1 |
Total with a Related Allowance Recorded | 884 |  | 9 |  | 83 |  | 2 |
Total: |  |  |  |
Commercial real estate | 23,450 |  | 172 |  | 23,539 |  | 167 |
Commercial and industrial | 10,847 |  | 62 |  | 9,826 |  | 55 |
Commercial construction | 7,704 |  | 53 |  | 8,324 |  | 57 |
Consumer real estate | 7,115 |  | 97 |  | 8,309 |  | 104 |
Other consumer | 53 |  | — |  | 153 |  | 2 |
Total | $ | 49,169 |  | $ | 384 |  | $ | 50,151 |  | $ | 385 |
Summary of Allowance for Loan Losses | The following tables detail activity in the ALL for the periods presented:
| Three Months Ended March 31, 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 | (66 | ) |  | (707 | ) |  | — |  |  | (375 | ) |  | (303 | ) |  | (1,451 | )
Recoveries | 103 |  |  | 114 |  |  | 1 |  |  | 136 |  |  | 85 |  |  | 439 |
Net (Charge-offs)/ Recoveries | 37 |  |  | (593 | ) |  | 1 |  |  | (239 | ) |  | (218 | ) |  | (1,012 | )
Provision for loan losses | (1,130 | ) |  | 636 |  |  | 775 |  |  | 629 |  |  | 297 |  |  | 1,207 |
Balance at End of Period | $ | 19,071 |  |  | $ | 13,711 |  |  | $ | 6,869 |  |  | $ | 6,723 |  |  | $ | 1,732 |  |  | $ | 48,106 |
| Three Months Ended March 31, 2014
(dollars in thousands) | Commercial Real Estate |  |  | Commercial and Industrial |  |  | Commercial Construction |  |  | Consumer Real Estate |  |  | Other Consumer |  |  | Total Loans |
Balance at beginning of period | $ | 18,921 |  |  | $ | 14,433 |  |  | $ | 5,374 |  |  | $ | 6,362 |  |  | $ | 1,165 |  |  | $ | 46,255 |
Charge-offs | (266 | ) |  | (290 | ) |  | (28 | ) |  | (123 | ) |  | (267 | ) |  | (974 | )
Recoveries | 540 |  |  | 314 |  |  | 50 |  |  | 59 |  |  | 83 |  |  | 1,046 |
Net (Charge-offs)/ Recoveries | 274 |  |  | 24 |  |  | 22 |  |  | (64 | ) |  | (184 | ) |  | 72 |
Provision for loan losses | 685 |  |  | (478 | ) |  | (213 | ) |  | 110 |  |  | 185 |  |  | 289 |
Balance at End of Period | $ | 19,880 |  |  | $ | 13,979 |  |  | $ | 5,183 |  |  | $ | 6,408 |  |  | $ | 1,166 |  |  | $ | 46,616 |
Summary of Allowance for Loan Losses and Recorded Investments | The following tables present the ALL and recorded investments in loans by category as of March 31, 2015 and December 31, 2014:
| March 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(1) |
Commercial real estate | $ | 39 |  | $ | 19,032 |  | $ | 19,071 |  |  | $ | 23,326 |  | $ | 2,129,087 |  | $ | 2,152,413 |
Commercial and industrial | — |  | 13,711 |  | 13,711 |  |  | 10,338 |  | 1,200,715 |  | 1,211,053 |
Commercial construction | — |  | 6,869 |  | 6,869 |  |  | 7,696 |  | 278,470 |  | 286,166 |
Consumer real estate | 41 |  | 6,682 |  | 6,723 |  |  | 7,080 |  | 961,232 |  | 968,312 |
Other consumer | 8 |  | 1,724 |  | 1,732 |  |  | 49 |  | 65,705 |  | 65,754 |
Total | $ | 88 |  | $ | 48,018 |  | $ | 48,106 |  |  | $ | 48,489 |  | $ | 4,635,209 |  | $ | 4,683,698 |
(1)Includes acquired loans.
| December 31, 2014
| 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(1) |
Commercial real estate | $ | — |  | $ | 20,164 |  | $ | 20,164 |  |  | $ | 19,890 |  | $ | 1,662,346 |  | $ | 1,682,236 |
Commercial and industrial | — |  | 13,668 |  | 13,668 |  |  | 9,218 |  | 984,920 |  | 994,138 |
Commercial construction | — |  | 6,093 |  | 6,093 |  |  | 7,605 |  | 208,543 |  | 216,148 |
Consumer real estate | 43 |  | 6,290 |  | 6,333 |  |  | 7,202 |  | 903,455 |  | 910,657 |
Other consumer | 11 |  | 1,642 |  | 1,653 |  |  | 62 |  | 65,505 |  | 65,567 |
Total | $ | 54 |  | $ | 47,857 |  | $ | 47,911 |  |  | $ | 43,977 |  | $ | 3,824,769 |  | $ | 3,868,746 |
(1)Includes acquired loans.

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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 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953659-111524 Reference 2: 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 + 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=35738203&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=35738203&loc=SL6953401-111524 + Details
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