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Bank Loans (Loans That Were Individually Evaluated For Impairment By Portfolio Segment) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance $ 35,775 $ 2,062
Recorded Investment with No Allowance 9,159 543
Recorded Investment with Allowance 25,901 520
Total Recorded Investment 35,060 1,063
Related Allowance 2,728 188
Average Recorded Investment 33,501 1,117
Commercial And Industrial [Member]    
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance 25,381  
Recorded Investment with Allowance 25,381  
Total Recorded Investment 25,381  
Related Allowance 2,538  
Average Recorded Investment 25,239  
Consumer [Member]    
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance 824 944
Recorded Investment with Allowance 17 15
Total Recorded Investment 17 15
Related Allowance 17 15
Average Recorded Investment 18 23
Residential Real Estate [Member]    
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance 419 776
Recorded Investment with No Allowance 331 524
Recorded Investment with Allowance 180 182
Total Recorded Investment 511 706
Related Allowance 24 24
Average Recorded Investment 564 752
Commercial Real Estate [Member]    
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance 8,828  
Recorded Investment with No Allowance 8,828  
Total Recorded Investment 8,828  
Average Recorded Investment 7,357  
Home Equity Lines Of Credit [Member]    
Financing Receivable Impaired [Line Items]    
Unpaid Contractual Principal Balance 323 342
Recorded Investment with No Allowance   19
Recorded Investment with Allowance 323 323
Total Recorded Investment 323 342
Related Allowance 149 149
Average Recorded Investment $ 323 $ 342