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Loans (Commercial Loan Portfolio Categorized By Internally Assigned Asset Classification) (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | $ 2,366,640 | $ 2,305,071
Commercial Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 374,992 | 349,079
Commercial Business [Member] | Uncriticized [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 351,108 | 326,254
Commercial Business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 10,636 | 10,377
Commercial Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 13,248 | 12,448
Commercial Business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans |  |
Commercial Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 676,455 | 671,552
Commercial Mortgage [Member] | Uncriticized [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 658,453 | 652,550
Commercial Mortgage [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 11,660 | 12,690
Commercial Mortgage [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 6,342 | 6,312
Commercial Mortgage [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans |  |

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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