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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings by Modification Type) (Details) $ in Thousands	Jun. 30, 2015 USD ($) securities loans	Dec. 31, 2014 USD ($) securities loans
Troubled debt restructurings
Number of Loans | loans	37	40
Recorded Investment	$ 8,803	$ 9,396
Commercial real estate | Extension of term
Troubled debt restructurings
Number of Loans | loans	1	1
Recorded Investment	$ 31	$ 39
Commercial real estate | Interest Rate Concession
Troubled debt restructurings
Number of Loans | securities	1	1
Recorded Investment	$ 56	$ 65
Commercial real estate | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans | loans	25	26
Recorded Investment	$ 7,506	$ 7,984
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	3	4
Recorded Investment	$ 144	$ 155
Commercial and industrial | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans | loans	3	4
Recorded Investment	$ 144	$ 155
Consumer and other | Extension of term
Troubled debt restructurings
Number of Loans | loans	2	3
Recorded Investment	$ 723	$ 753
Consumer and other | Combination of extension and interest rate concession
Troubled debt restructurings
Number of Loans | loans	5	5
Recorded Investment	$ 343	$ 400

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