Allowance for Loan and Lease Losses (Details 5) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Orginated Loans and Leases [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance $ 11,852 $ 23,117 $ 26,050
Average Recorded Investment With Related Allowance 892 23,117 3,401
Average Recorded Investment 12,744   29,451
Orginated Loans and Leases [Member] | Commercial and Industrial Other [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 2,366 4,918 3,016
Average Recorded Investment With Related Allowance     3,140
Orginated Loans and Leases [Member] | Commercial Real Estate - Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance   6,201 7,430
Orginated Loans and Leases [Member] | Commercial Real Estate Other [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 8,078 10,775 15,120
Average Recorded Investment With Related Allowance 892   261
Orginated Loans and Leases [Member] | Residential Real Estate - Home equity [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 1,408 1,223 484
Acquired Loans and Leases [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 1,839 5,114  
Interest Income Recognized With No Related Allowance   102  
Average Recorded Investment With Related Allowance 1,097 724  
Average Recorded Investment 2,936 5,838  
Interest Income Recognized   102  
Acquired Loans and Leases [Member] | Commercial and Industrial Other [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 252 1,042  
Average Recorded Investment With Related Allowance 831    
Acquired Loans and Leases [Member] | Commercial Real Estate Other [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance 1,147 3,999  
Interest Income Recognized With No Related Allowance   102  
Average Recorded Investment With Related Allowance 266 724  
Acquired Loans and Leases [Member] | Residential Real Estate - Home equity [Member]      
Financing Receivable, Impaired [Line Items]      
Average Recorded Investment With No Related Allowance $ 440 $ 73