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Loans Receivable, Net (Tables) | 3 Months Ended
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Mar. 31, 2013
Receivables [Abstract] |
Summary of the activity in the ALLL on a portfolio class basis |
| Three Months ended March 31, 2013
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Allowance for loan and lease losses |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 130,854 |  |  | 15,482 |  |  | 74,398 |  |  | 21,567 |  |  | 10,659 |  |  | 8,748 |
Provision for loan losses | 2,100 |  |  | 23 |  |  | (952 | ) |  | 1,699 |  |  | 1,457 |  |  | (127 | )
Charge-offs | (3,614 | ) |  | (177 | ) |  | (765 | ) |  | (1,158 | ) |  | (1,338 | ) |  | (176 | )
Recoveries | 1,495 |  |  | 83 |  |  | 654 |  |  | 373 |  |  | 55 |  |  | 330 |
Balance at end of period | $ | 130,835 |  |  | 15,411 |  |  | 73,335 |  |  | 22,481 |  |  | 10,833 |  |  | 8,775 |
| Three Months ended March 31, 2012
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Allowance for loan and lease losses |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period | $ | 137,516 |  |  | 17,227 |  |  | 76,920 |  |  | 20,833 |  |  | 13,616 |  |  | 8,920 |
Provision for loan losses | 8,625 |  |  | 3,530 |  |  | 1,778 |  |  | 2,373 |  |  | 737 |  |  | 207 |
Charge-offs | (11,058 | ) |  | (1,849 | ) |  | (6,123 | ) |  | (1,283 | ) |  | (1,006 | ) |  | (797 | )
Recoveries | 1,503 |  |  | 95 |  |  | 665 |  |  | 521 |  |  | 17 |  |  | 205 |
Balance at end of period | $ | 136,586 |  |  | 19,003 |  |  | 73,240 |  |  | 22,444 |  |  | 13,364 |  |  | 8,535 |
Summary of the ALLL and loans receivable on a portfolio class basis |
| March 31, 2013
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Allowance for loan and lease losses |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment | $ | 11,601 |  |  | 1,144 |  |  | 5,598 |  |  | 3,302 |  |  | 270 |  |  | 1,287 |
Collectively evaluated for impairment | 119,234 |  |  | 14,267 |  |  | 67,737 |  |  | 19,179 |  |  | 10,563 |  |  | 7,488 |
Total allowance for loan and lease losses | $ | 130,835 |  |  | 15,411 |  |  | 73,335 |  |  | 22,481 |  |  | 10,833 |  |  | 8,775 |
Loans receivable |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment | $ | 193,856 |  |  | 24,944 |  |  | 121,356 |  |  | 32,640 |  |  | 9,419 |  |  | 5,497 |
Collectively evaluated for impairment | 3,209,989 |  |  | 488,840 |  |  | 1,554,786 |  |  | 598,850 |  |  | 378,444 |  |  | 189,069 |
Total loans receivable | $ | 3,403,845 |  |  | 513,784 |  |  | 1,676,142 |  |  | 631,490 |  |  | 387,863 |  |  | 194,566 |
| December 31, 2012
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Allowance for loan and lease losses |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment | $ | 15,534 |  |  | 1,680 |  |  | 7,716 |  |  | 3,859 |  |  | 870 |  |  | 1,409 |
Collectively evaluated for impairment | 115,320 |  |  | 13,802 |  |  | 66,682 |  |  | 17,708 |  |  | 9,789 |  |  | 7,339 |
Total allowance for loan and lease losses | $ | 130,854 |  |  | 15,482 |  |  | 74,398 |  |  | 21,567 |  |  | 10,659 |  |  | 8,748 |
Loans receivable |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment | $ | 201,735 |  |  | 25,862 |  |  | 125,282 |  |  | 33,593 |  |  | 11,074 |  |  | 5,924 |
Collectively evaluated for impairment | 3,195,690 |  |  | 490,605 |  |  | 1,530,226 |  |  | 589,804 |  |  | 392,851 |  |  | 192,204 |
Total loans receivable | $ | 3,397,425 |  |  | 516,467 |  |  | 1,655,508 |  |  | 623,397 |  |  | 403,925 |  |  | 198,128 |
Summary of impaired loans by portfolio class of loans |
| At or for the Three Months ended March 31, 2013
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Loans with a specific valuation allowance |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 55,215 |  |  | 6,754 |  |  | 23,965 |  |  | 20,521 |  |  | 602 |  |  | 3,373 |
Unpaid principal balance | 62,209 |  |  | 6,868 |  |  | 30,710 |  |  | 20,593 |  |  | 615 |  |  | 3,423 |
Specific valuation allowance | 11,601 |  |  | 1,144 |  |  | 5,598 |  |  | 3,302 |  |  | 270 |  |  | 1,287 |
Average balance | 58,987 |  |  | 7,044 |  |  | 26,780 |  |  | 20,863 |  |  | 978 |  |  | 3,322 |
Loans without a specific valuation allowance |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 138,641 |  |  | 18,190 |  |  | 97,391 |  |  | 12,119 |  |  | 8,817 |  |  | 2,124 |
Unpaid principal balance | 159,062 |  |  | 19,275 |  |  | 113,126 |  |  | 14,415 |  |  | 10,082 |  |  | 2,164 |
Average balance | 138,807 |  |  | 18,359 |  |  | 96,539 |  |  | 12,253 |  |  | 9,268 |  |  | 2,388 |
Totals |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 193,856 |  |  | 24,944 |  |  | 121,356 |  |  | 32,640 |  |  | 9,419 |  |  | 5,497 |
Unpaid principal balance | 221,271 |  |  | 26,143 |  |  | 143,836 |  |  | 35,008 |  |  | 10,697 |  |  | 5,587 |
Specific valuation allowance | 11,601 |  |  | 1,144 |  |  | 5,598 |  |  | 3,302 |  |  | 270 |  |  | 1,287 |
Average balance | 197,794 |  |  | 25,403 |  |  | 123,319 |  |  | 33,116 |  |  | 10,246 |  |  | 5,710 |
| At or for the Year ended December 31, 2012
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Loans with a specific valuation allowance |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 62,759 |  |  | 7,334 |  |  | 29,595 |  |  | 21,205 |  |  | 1,354 |  |  | 3,271 |
Unpaid principal balance | 70,261 |  |  | 7,459 |  |  | 36,887 |  |  | 21,278 |  |  | 1,362 |  |  | 3,275 |
Specific valuation allowance | 15,534 |  |  | 1,680 |  |  | 7,716 |  |  | 3,859 |  |  | 870 |  |  | 1,409 |
Average balance | 76,656 |  |  | 12,797 |  |  | 36,164 |  |  | 22,665 |  |  | 1,390 |  |  | 3,640 |
Loans without a specific valuation allowance |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 138,976 |  |  | 18,528 |  |  | 95,687 |  |  | 12,388 |  |  | 9,720 |  |  | 2,653 |
Unpaid principal balance | 149,412 |  |  | 19,613 |  |  | 102,798 |  |  | 14,318 |  |  | 9,965 |  |  | 2,718 |
Average balance | 162,505 |  |  | 16,034 |  |  | 111,554 |  |  | 19,733 |  |  | 11,993 |  |  | 3,191 |
Totals |  |  |  |  |  |  |  |  |  |  |
Recorded balance | $ | 201,735 |  |  | 25,862 |  |  | 125,282 |  |  | 33,593 |  |  | 11,074 |  |  | 5,924 |
Unpaid principal balance | 219,673 |  |  | 27,072 |  |  | 139,685 |  |  | 35,596 |  |  | 11,327 |  |  | 5,993 |
Specific valuation allowance | 15,534 |  |  | 1,680 |  |  | 7,716 |  |  | 3,859 |  |  | 870 |  |  | 1,409 |
Average balance | 239,161 |  |  | 28,831 |  |  | 147,718 |  |  | 42,398 |  |  | 13,383 |  |  | 6,831 |
Loans receivable aging analysis on a portfolio class basis |
| March 31, 2013
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Accruing loans 30-59 days past due | $ | 24,925 |  |  | 6,528 |  |  | 9,720 |  |  | 4,465 |  |  | 1,921 |  |  | 2,291 |
Accruing loans 60-89 days past due | 7,353 |  |  | 148 |  |  | 5,286 |  |  | 949 |  |  | 506 |  |  | 464 |
Accruing loans 90 days or more past due | 563 |  |  | — |  |  | 262 |  |  | — |  |  | 249 |  |  | 52 |
Non-accrual loans | 90,856 |  |  | 13,023 |  |  | 53,173 |  |  | 11,964 |  |  | 10,276 |  |  | 2,420 |
Total past due and non-accrual loans | 123,697 |  |  | 19,699 |  |  | 68,441 |  |  | 17,378 |  |  | 12,952 |  |  | 5,227 |
Current loans receivable | 3,280,148 |  |  | 494,085 |  |  | 1,607,701 |  |  | 614,112 |  |  | 374,911 |  |  | 189,339 |
Total loans receivable | $ | 3,403,845 |  |  | 513,784 |  |  | 1,676,142 |  |  | 631,490 |  |  | 387,863 |  |  | 194,566 |
| December 31, 2012
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Accruing loans 30-59 days past due | $ | 17,454 |  |  | 3,897 |  |  | 7,424 |  |  | 2,020 |  |  | 2,872 |  |  | 1,241 |
Accruing loans 60-89 days past due | 9,643 |  |  | 1,870 |  |  | 3,745 |  |  | 645 |  |  | 2,980 |  |  | 403 |
Accruing loans 90 days or more past due | 1,479 |  |  | 451 |  |  | 594 |  |  | 197 |  |  | 188 |  |  | 49 |
Non-accrual loans | 96,933 |  |  | 14,237 |  |  | 55,687 |  |  | 13,200 |  |  | 11,241 |  |  | 2,568 |
Total past due and non-accrual loans | 125,509 |  |  | 20,455 |  |  | 67,450 |  |  | 16,062 |  |  | 17,281 |  |  | 4,261 |
Current loans receivable | 3,271,916 |  |  | 496,012 |  |  | 1,588,058 |  |  | 607,335 |  |  | 386,644 |  |  | 193,867 |
Total loans receivable | $ | 3,397,425 |  |  | 516,467 |  |  | 1,655,508 |  |  | 623,397 |  |  | 403,925 |  |  | 198,128 |
Summary of troubled debt restructurings on a portfolio class basis |
| Three Months ended March 31, 2013
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Troubled debt restructurings |  |  |  |  |  |  |  |  |  |  |
Number of loans | 24 |  |  | 7 |  |  | 9 |  |  | 7 |  |  | — |  |  | 1 |
Pre-modification recorded balance | $ | 6,250 |  |  | 1,358 |  |  | 3,316 |  |  | 1,505 |  |  | — |  |  | 71 |
Post-modification recorded balance | $ | 6,591 |  |  | 1,699 |  |  | 3,316 |  |  | 1,505 |  |  | — |  |  | 71 |
Troubled debt restructurings that subsequently defaulted |  |  |  |  |  |  |  |  |  |  |
Number of loans | 5 |  |  | — |  |  | 3 |  |  | 1 |  |  | — |  |  | 1 |
Recorded balance | $ | 1,109 |  |  | — |  |  | 1,052 |  |  | 12 |  |  | — |  |  | 45 |
| Three Months ended March 31, 2012
(Dollars in thousands) | Total |  | Residential Real Estate |  | Commercial Real Estate |  | Other Commercial |  | Home Equity |  | Other Consumer
Troubled debt restructurings |  |  |  |  |  |  |  |  |  |  |
Number of loans | 56 |  |  | 3 |  |  | 25 |  |  | 19 |  |  | 6 |  |  | 3 |
Pre-modification recorded balance | $ | 16,526 |  |  | 359 |  |  | 11,110 |  |  | 4,123 |  |  | 785 |  |  | 149 |
Post-modification recorded balance | $ | 15,819 |  |  | 359 |  |  | 10,393 |  |  | 4,133 |  |  | 785 |  |  | 149 |
Troubled debt restructurings that subsequently defaulted |  |  |  |  |  |  |  |  |  |  |
Number of loans | 15 |  |  | — |  |  | 7 |  |  | 4 |  |  | 2 |  |  | 2 |
Recorded balance | $ | 4,484 |  |  | — |  |  | 3,037 |  |  | 790 |  |  | 599 |  |  | 58 |

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