Allowance for Loan and Lease Losses (Details 5) - Originated Loans and Leases
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
loan
Jun. 30, 2016
USD ($)
loan
Jun. 30, 2017
USD ($)
loan
Jun. 30, 2016
USD ($)
loan
Financing Receivable, Modifications [Line Items]        
Number of Loans | loan 1 2 2 7
Pre-Modification Outstanding Recorded Investment $ 89 $ 613 $ 162 $ 1,897
Post-Modification Outstanding Recorded Investment $ 89 $ 613 $ 162 $ 1,897
Number of Loans | loan 0 0 [1] 1 [2] 0 [3]
Post-Modification Outstanding Recorded Investment $ 0 $ 0 [1] $ 55 [2] $ 0 [3]
Residential real estate - Home equity        
Financing Receivable, Modifications [Line Items]        
Number of Loans | loan 1 [4] 2 [5] 2 [6] 5 [7]
Pre-Modification Outstanding Recorded Investment $ 89 [4] $ 613 [5] $ 162 [6] $ 782 [7]
Post-Modification Outstanding Recorded Investment $ 89 [4] $ 613 [5] $ 162 [6] $ 782 [7]
Number of Loans | loan 0 [8] 0 [1],[5] 1 [2],[6] 0 [3],[7]
Post-Modification Outstanding Recorded Investment $ 0 [8] $ 0 [1],[5] $ 55 [2],[6] $ 0 [3],[7]
Commercial and industrial other        
Financing Receivable, Modifications [Line Items]        
Number of Loans | loan [9]       2
Pre-Modification Outstanding Recorded Investment [9]       $ 1,115
Post-Modification Outstanding Recorded Investment [9]       $ 1,115
Number of Loans | loan [3],[9]       0
Post-Modification Outstanding Recorded Investment [3],[9]       $ 0
[1] TDRs that defaulted during the three months ended June 30, 2016 that had been restructured in the prior twelve months.
[2] TDRs that defaulted during the six months ended June 30, 2017 that had been restructured in the prior twelve months.
[3] TDRs that defaulted during the six months ended June 30, 2016 that had been restructured in the prior twelve months.
[4] TDRs that defaulted during the three months ended June 30, 2017 that were restructured in the prior twelve months.
[5] Represents the following concessions: extension of term and reduction of rate.
[6] Represents the following concessions: extension of term and reduction of rate.
[7] Represents the following concessions: extension of term and reduction of rate.
[8] Represents the following concessions: extension of term and reduction of rate.
[9] Represents the following concessions: extension of term and reduction of rate.