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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	Sep. 30, 2015 USD ($) securities loans	Dec. 31, 2014 USD ($) securities loans
Troubled debt restructurings
Number of Loans | loans	38	40
Recorded Investment	$ 14,622	$ 9,396
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	6	4
Recorded Investment	$ 6,209	$ 155
Troubled Debt Restructuring, Combination of Extension of Term and Interest Rate Concession [Member] | Commercial real estate
Troubled debt restructurings
Number of Loans | loans	24	26
Recorded Investment	$ 7,327	$ 7,984
Troubled Debt Restructuring, Combination of Extension of Term and Interest Rate Concession [Member] | Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	6	4
Recorded Investment	$ 6,209	$ 155
Troubled Debt Restructuring, Combination of Extension of Term and Interest Rate Concession [Member] | Consumer and other
Troubled debt restructurings
Number of Loans | loans	4	5
Recorded Investment	$ 301	$ 400
Troubled Debt Restructuring, Interest Rate Concession [Member] | Commercial real estate
Troubled debt restructurings
Number of Loans | securities	1	1
Recorded Investment	$ 55	$ 65
Troubled Debt Restructuring, Extension of Term [Member] | Commercial real estate
Troubled debt restructurings
Number of Loans | loans	1	1
Recorded Investment	$ 28	$ 39
Troubled Debt Restructuring, Extension of Term [Member] | Consumer and other
Troubled debt restructurings
Number of Loans | loans	2	3
Recorded Investment	$ 702	$ 753

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