Allowance for Loan and Lease Losses (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Orginated Loans and Leases
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	$ 26,167	$ 25,081	$ 25,928	$ 27,308
Interest Income Recognized With No Related Allowance	0	4	0	4
Average Recorded Investment With Related Allowance	416	5,093	417	5,159
Interest Income Recognized With Related Allowance	0	6	0	24
Average Recorded Investment	26,583	30,174	26,345	32,467
Interest Income Recognized	0	10	0	28
Orginated Loans and Leases | Commercial and Industrial Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	4,397	2,966	5,085	3,108
Interest Income Recognized With No Related Allowance	0	4	0	4
Average Recorded Investment With Related Allowance	416	4,067	417	4,110
Interest Income Recognized With Related Allowance	0	0	0	0
Orginated Loans and Leases | Commercial Real Estate - Construction
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	6,311	11,247	6,529	13,196
Interest Income Recognized With No Related Allowance	0	0	0	0
Average Recorded Investment With Related Allowance	0
Interest Income Recognized With Related Allowance	0
Orginated Loans and Leases | Commercial Real Estate Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	15,012	10,380	13,867	10,516
Interest Income Recognized With No Related Allowance	0	0	0	0
Average Recorded Investment With Related Allowance	0	1,026	0	1,049
Interest Income Recognized With Related Allowance	0	6	0	24
Orginated Loans and Leases | Residential real estate other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	447	488	447	488
Interest Income Recognized With No Related Allowance	0	0	0	0
Acquired Loans and Leases
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	4,998		5,509
Interest Income Recognized With No Related Allowance	5		36
Average Recorded Investment With Related Allowance	212		214
Interest Income Recognized With Related Allowance	0		4
Average Recorded Investment	5,210		5,723
Interest Income Recognized	5		40
Acquired Loans and Leases | Commercial and Industrial Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	2,517		3,017
Interest Income Recognized With No Related Allowance	0		5
Average Recorded Investment With Related Allowance			0
Acquired Loans and Leases | Commercial Real Estate Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	2,481		2,492
Interest Income Recognized With No Related Allowance	5		31
Average Recorded Investment With Related Allowance	212		214
Interest Income Recognized With Related Allowance	$ 0		$ 4