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Loans (Commercial Loan Portfolio Categorized By Internally Assigned Asset Classification) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | $ 2,858,843 | $ 2,694,922
Commercial Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 506,265 | 449,763
Commercial Business [Member] | Uncriticized [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 473,370 | 429,692
Commercial Business [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 21,413 | 7,120
Commercial Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 11,482 | 12,951
Commercial Business [Member] | Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans |  |
Commercial Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 869,192 | 810,851
Commercial Mortgage [Member] | Uncriticized [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 850,919 | 791,127
Commercial Mortgage [Member] | Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 10,457 | 12,185
Commercial Mortgage [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total Loans | 7,816 | 7,539
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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