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Bank Loans (Loans That Were Individually Evaluated For Impairment By Portfolio Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | $ 29,713 | $ 28,742
Recorded Investment with Allowance | 28,036 | 26,934
Total Recorded Investment | 28,036 | 26,934
Related Allowance | 3,602 | 3,375
Average Recorded Investment | 27,916 | 32,242
Commercial And Industrial [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | 18,010 | 16,815
Recorded Investment with Allowance | 18,010 | 16,815
Total Recorded Investment | 18,010 | 16,815
Related Allowance | 2,453 | 2,392
Average Recorded Investment | 17,885 | 22,559
Consumer [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | 701 | 833
Recorded Investment with Allowance | 5 | 6
Total Recorded Investment | 5 | 6
Related Allowance | 5 | 6
Average Recorded Investment | 9 | 9
Residential Real Estate [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | 176 | 178
Recorded Investment with Allowance | 176 | 178
Total Recorded Investment | 176 | 178
Related Allowance | 24 | 24
Average Recorded Investment | 177 | 181
Commercial Real Estate [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | 10,503 | 10,503
Recorded Investment with Allowance | 9,522 | 9,522
Total Recorded Investment | 9,522 | 9,522
Related Allowance | 972 | 722
Average Recorded Investment | 9,522 | 9,080
Home Equity Lines Of Credit [Member] |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Contractual Principal Balance | 323 | 413
Recorded Investment with Allowance | 323 | 413
Total Recorded Investment | 323 | 413
Related Allowance | 148 | 231
Average Recorded Investment | $ 323 | $ 413

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 + Details
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