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Allowance Allocations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 55,825 |  |  |  | $ 55,100 | $ 55,825 | $ 55,100 | $ 53,239 |
Charge-offs |  |  |  |  |  |  |  |  | (3,472) | (4,918) | (10,947) |
Recoveries |  |  |  |  |  |  |  |  | 3,138 | 4,143 | 2,405 |
Provision (benefit) | $ 4,000 | $ 950 | $ 600 | 525 | $ 500 | $ 800 | $ 700 | (500) | 6,075 | 1,500 | 10,403 |
Ending balance | 61,566 |  |  |  | 55,825 |  |  |  | 61,566 | 55,825 | 55,100 |
Ending balance: individually evaluated for impairment | 5,214 |  |  |  | 1,930 |  |  |  | 5,214 | 1,930 | 2,416 |
Ending balance: collectively evaluated for impairment | 56,352 |  |  |  | 53,895 |  |  |  | 56,352 | 53,895 | 52,684 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 5,903,916 |  |  |  | 5,475,716 |  |  |  | 5,903,916 | 5,475,716 | 4,890,383 |
Individually evaluated for impairment | 77,297 |  |  |  | 51,410 |  |  |  | 77,297 | 51,410 | 58,035 |
Financing Receivable, Net | 4,355,968 |  |  |  | 3,966,324 |  |  |  | 4,355,968 | 3,966,324 |  |
Loans Receivable, Gross, Commercial and Industrial | 902,053 |  |  |  | 843,276 |  |  |  | 902,053 | 843,276 |  |
Loans Receivable, Gross, Commercial, Mortgage | 3,010,798 |  |  |  | 2,653,434 |  |  |  | 3,010,798 | 2,653,434 |  |
Total loans | 5,999,605 |  |  |  | 5,547,721 |  |  |  | 5,999,605 | 5,547,721 | 4,970,733 | [1]
Loans and Leases Receivable, Gross, Consumer, Other | 11,064 |  |  |  | 14,988 |  |  |  | 11,064 | 14,988 |  |
Loans Receivable, Gross, Commercial, Construction | 320,391 |  |  |  | 373,368 |  |  |  | 320,391 | 373,368 |  |
Small Business | 122,726 |  |  |  | 96,246 |  |  |  | 122,726 | 96,246 |  |
Loans and Leases Receivable, Gross, Consumer, Mortgage | 644,426 |  |  |  | 638,606 |  |  |  | 644,426 | 638,606 |  |
Commercial and Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 13,802 |  |  |  | 15,573 | 13,802 | 15,573 | 15,622 |
Charge-offs |  |  |  |  |  |  |  |  | (593) | (2,010) | (2,097) |
Recoveries |  |  |  |  |  |  |  |  | 859 | 1,593 | 462 |
Provision (benefit) |  |  |  |  |  |  |  |  | 2,853 | (1,354) | 1,586 |
Ending balance | 16,921 |  |  |  | 13,802 |  |  |  | 16,921 | 13,802 | 15,573 |
Ending balance: individually evaluated for impairment | 3,661 |  |  |  | 183 |  |  |  | 3,661 | 183 | 412 |
Ending balance: collectively evaluated for impairment | 13,260 |  |  |  | 13,619 |  |  |  | 13,260 | 13,619 | 15,161 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 862,875 |  |  |  | 838,129 |  |  |  | 862,875 | 838,129 | 856,185 |
Individually evaluated for impairment | 39,178 |  |  |  | 5,147 |  |  |  | 39,178 | 5,147 | 4,654 |
Financing Receivable, Net | 902,053 |  |  |  | 843,276 |  |  |  | 902,053 | 843,276 |  |
Total loans | 902,053 |  |  |  | 843,276 |  |  |  | 902,053 | 843,276 | 860,839 |
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 27,327 |  |  |  | 25,873 | 27,327 | 25,873 | 24,541 |
Charge-offs |  |  |  |  |  |  |  |  | (414) | (330) | (5,454) |
Recoveries |  |  |  |  |  |  |  |  | 564 | 1,073 | 404 |
Provision (benefit) |  |  |  |  |  |  |  |  | 2,892 | 711 | 6,382 |
Ending balance | 30,369 |  |  |  | 27,327 |  |  |  | 30,369 | 27,327 | 25,873 |
Ending balance: individually evaluated for impairment | 196 |  |  |  | 204 |  |  |  | 196 | 204 | 197 |
Ending balance: collectively evaluated for impairment | 30,173 |  |  |  | 27,123 |  |  |  | 30,173 | 27,123 | 25,676 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 2,983,642 |  |  |  | 2,619,294 |  |  |  | 2,983,642 | 2,619,294 | 2,304,099 |
Individually evaluated for impairment | 16,813 |  |  |  | 22,986 |  |  |  | 16,813 | 22,986 | 30,729 |
Financing Receivable, Net | 3,010,798 |  |  |  | 2,653,434 |  |  |  | 3,010,798 | 2,653,434 |  |
Total loans | 3,010,798 |  |  |  | 2,653,434 |  |  |  | 3,010,798 | 2,653,434 | 2,347,323 |
Construction Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 5,366 |  |  |  | 3,945 | 5,366 | 3,945 | 3,371 |
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 | 0 |
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 |  |
Provision (benefit) |  |  |  |  |  |  |  |  | (844) | 1,421 | 574 |
Ending balance | 4,522 |  |  |  | 5,366 |  |  |  | 4,522 | 5,366 | 3,945 |
Ending balance: individually evaluated for impairment | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0 |
Ending balance: collectively evaluated for impairment | 4,522 |  |  |  | 5,366 |  |  |  | 4,522 | 5,366 | 3,945 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 320,391 |  |  |  | 373,064 |  |  |  | 320,391 | 373,064 | 265,501 |
Individually evaluated for impairment | 0 |  |  |  | 304 |  |  |  | 0 | 304 | 311 |
Financing Receivable, Net | 320,391 |  |  |  | 373,368 |  |  |  | 320,391 | 373,368 |  |
Total loans | 320,391 |  |  |  | 373,368 |  |  |  | 320,391 | 373,368 | 265,994 |
Small Business [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,264 |  |  |  | 1,171 | 1,264 | 1,171 | 1,215 |
Charge-offs |  |  |  |  |  |  |  |  | (228) | (267) | (605) |
Recoveries |  |  |  |  |  |  |  |  | 195 | 264 | 275 |
Provision (benefit) |  |  |  |  |  |  |  |  | 271 | 96 | 286 |
Ending balance | 1,502 |  |  |  | 1,264 |  |  |  | 1,502 | 1,264 | 1,171 |
Ending balance: individually evaluated for impairment | 8 |  |  |  | 4 |  |  |  | 8 | 4 | 7 |
Ending balance: collectively evaluated for impairment | 1,494 |  |  |  | 1,260 |  |  |  | 1,494 | 1,260 | 1,164 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 121,855 |  |  |  | 95,225 |  |  |  | 121,855 | 95,225 | 84,159 |
Individually evaluated for impairment | 871 |  |  |  | 1,021 |  |  |  | 871 | 1,021 | 1,088 |
Financing Receivable, Net | 122,726 |  |  |  | 96,246 |  |  |  | 122,726 | 96,246 |  |
Total loans | 122,726 |  |  |  | 96,246 |  |  |  | 122,726 | 96,246 | 85,247 |
Residential Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,590 |  |  |  | 2,834 | 2,590 | 2,834 | 2,760 |
Charge-offs |  |  |  |  |  |  |  |  | (28) | (285) | (826) |
Recoveries |  |  |  |  |  |  |  |  | 299 | 133 | 424 |
Provision (benefit) |  |  |  |  |  |  |  |  | (240) | (92) | 476 |
Ending balance | 2,621 |  |  |  | 2,590 |  |  |  | 2,621 | 2,590 | 2,834 |
Ending balance: individually evaluated for impairment | 1,086 |  |  |  | 1,278 |  |  |  | 1,086 | 1,278 | 1,500 |
Ending balance: collectively evaluated for impairment | 1,535 |  |  |  | 1,312 |  |  |  | 1,535 | 1,312 | 1,334 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 622,392 |  |  |  | 614,014 |  |  |  | 622,392 | 614,014 | 505,799 |
Individually evaluated for impairment | 14,175 |  |  |  | 15,405 |  |  |  | 14,175 | 15,405 | 15,055 |
Total loans | 644,426 |  |  |  | 638,606 |  |  |  | 644,426 | 638,606 | 530,259 |
Home Equity [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 4,889 |  |  |  | 4,956 | 4,889 | 4,956 | 5,036 |
Charge-offs |  |  |  |  |  |  |  |  | (602) | (710) | (750) |
Recoveries |  |  |  |  |  |  |  |  | 141 | 356 | 249 |
Provision (benefit) |  |  |  |  |  |  |  |  | 810 | 287 | 421 |
Ending balance | 5,238 |  |  |  | 4,889 |  |  |  | 5,238 | 4,889 | 4,956 |
Ending balance: individually evaluated for impairment | 242 |  |  |  | 238 |  |  |  | 242 | 238 | 262 |
Ending balance: collectively evaluated for impairment | 4,996 |  |  |  | 4,651 |  |  |  | 4,996 | 4,651 | 4,694 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 982,095 |  |  |  | 921,563 |  |  |  | 982,095 | 921,563 | 858,305 |
Individually evaluated for impairment | 5,863 |  |  |  | 5,989 |  |  |  | 5,863 | 5,989 | 5,330 |
Total loans | 988,147 |  |  |  | 927,803 |  |  |  | 988,147 | 927,803 | 863,863 |
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 587 |  |  |  | $ 748 | 587 | 748 | 694 |
Charge-offs |  |  |  |  |  |  |  |  | (1,607) | (1,316) | (1,215) |
Recoveries |  |  |  |  |  |  |  |  | 1,080 | 724 | 591 |
Provision (benefit) |  |  |  |  |  |  |  |  | 333 | 431 | 678 |
Ending balance | 393 |  |  |  | 587 |  |  |  | 393 | 587 | 748 |
Ending balance: individually evaluated for impairment | 21 |  |  |  | 23 |  |  |  | 21 | 23 | 38 |
Ending balance: collectively evaluated for impairment | 372 |  |  |  | 564 |  |  |  | 372 | 564 | 710 |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment | 10,666 |  |  |  | 14,427 |  |  |  | 10,666 | 14,427 | 16,335 |
Individually evaluated for impairment | 397 |  |  |  | 558 |  |  |  | 397 | 558 | 868 |
Total loans | 11,064 |  |  |  | 14,988 |  |  |  | 11,064 | 14,988 | 17,208 |
Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 18,392 |  |  |  | 20,595 |  |  |  | 18,392 | 20,595 | 22,315 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial and Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 10,343 |  |  |  | 11,154 |  |  |  | 10,343 | 11,154 | 12,495 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Construction Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 182 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Small Business [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 7,859 |  |  |  | 9,187 |  |  |  | 7,859 | 9,187 | 9,405 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Home Equity [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | 189 |  |  |  | 251 |  |  |  | 189 | 251 | 228 |
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing receivables ending balance: |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Net | $ 1 |  |  |  | $ 3 |  |  |  | $ 1 | $ 3 | $ 5 |
[1] | The amount of net deferred costs on originated loans included in the ending balance was $5.1 million, $4.3 million, and $2.8 million at December 31, 2016, 2015, and 2014, respectively. Net unamortized discounts on acquired loans not deemed to be PCI included in the ending balance was $8.6 million, $6.6 million, and $1.9 million at December 31, 2016, 2015, and 2014, respectively.

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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