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Allowance for Loan and Lease Losses (Details1) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       $ 32,004         $ 32,004    
Provision for loan and lease losses $ 1,706 $ 782 $ 978 855 $ 1,533 $ 281 $ 922 $ 209 4,321 $ 2,945 $ 2,306
Ending Balance 35,755       32,004       35,755 32,004  
Originated Loans and Leases                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       31,312       28,156 31,312 28,156  
Charge-offs                 (1,674) (1,996)  
Recoveries                 1,823 2,685  
Provision for loan and lease losses                 4,137 2,467  
Ending Balance 35,598       31,312       35,598 31,312 28,156
Originated Loans and Leases | Commercial and Industrial                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       10,495       9,157 10,495 9,157  
Charge-offs                 (878) (221)  
Recoveries                 576 809  
Provision for loan and lease losses                 (804) 750  
Ending Balance 9,389       10,495       9,389 10,495 9,157
Originated Loans and Leases | Commercial Real Estate                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       15,479       12,069 15,479 12,069  
Charge-offs                 (12) (363)  
Recoveries                 859 1,277  
Provision for loan and lease losses                 3,510 2,496  
Ending Balance 19,836       15,479       19,836 15,479 12,069
Originated Loans and Leases | Residential Real Estate                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       4,070       5,030 4,070 5,030  
Charge-offs                 (263) (338)  
Recoveries                 63 112  
Provision for loan and lease losses                 1,279 (734)  
Ending Balance 5,149       4,070       5,149 4,070 5,030
Originated Loans and Leases | Consumer and Other                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       1,268       1,900 1,268 1,900  
Charge-offs                 (521) (1,074)  
Recoveries                 325 487  
Provision for loan and lease losses                 152 (45)  
Ending Balance 1,224       1,268       1,224 1,268 1,900
Originated Loans and Leases | Finance Leases                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       0       0 0 0  
Charge-offs                 0 0  
Recoveries                 0 0  
Provision for loan and lease losses                   0  
Ending Balance 0       0       0 0 0
Acquired Loans and Leases                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       692       841 692 841  
Charge-offs                 (1,035) (785)  
Recoveries                 316 158  
Provision for loan and lease losses                 184 478  
Ending Balance 157       692       157 692 841
Acquired Loans and Leases | Commercial and Industrial                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       433       431 433 431  
Charge-offs                 (698) (77)  
Recoveries                 20 7  
Provision for loan and lease losses                 245 72  
Ending Balance 0       433       0 433 431
Acquired Loans and Leases | Commercial Real Estate                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       61       337 61 337  
Charge-offs                 (181) (400)  
Recoveries                 268 142  
Provision for loan and lease losses                 (51) (18)  
Ending Balance 97       61       97 61 337
Acquired Loans and Leases | Residential Real Estate                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       198       51 198 51  
Charge-offs                 (35) (302)  
Recoveries                 0 9  
Provision for loan and lease losses                 (109) 440  
Ending Balance 54       198       54 198 51
Acquired Loans and Leases | Consumer and Other                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       0       22 0 22  
Charge-offs                 (121) (6)  
Recoveries                 28 0  
Provision for loan and lease losses                 99 (16)  
Ending Balance 6       0       6 0 22
Acquired Loans and Leases | Finance Leases                      
Allowance for Loan and Lease Losses [Roll Forward]                      
Beginning balance       $ 0       $ 0 0 0  
Charge-offs                 0 0  
Recoveries                 0 0  
Provision for loan and lease losses                 0 0  
Ending Balance $ 0       $ 0       $ 0 $ 0 $ 0