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Allowance for Loan and Lease Losses (Details 3) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Originated Loans and Leases    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance $ 11,773 $ 10,762
Unpaid Principal Balance With No Related Allowance 12,334 11,168
Recorded Investment With Related Allowance 666 2,192
Unpaid Principal Balance With Related Allowance 666 2,318
Related Allowance 269 417
Recorded Investment 12,439 12,954
Unpaid Principal Balance 13,000 13,486
Originated Loans and Leases | Commercial and Industrial Other    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 169 276
Unpaid Principal Balance With No Related Allowance 187 370
Recorded Investment With Related Allowance 72 359
Unpaid Principal Balance With Related Allowance 72 276
Related Allowance 45 95
Originated Loans and Leases | Commercial Real Estate Other    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 8,112 6,979
Unpaid Principal Balance With No Related Allowance 8,626 7,263
Recorded Investment With Related Allowance 594 1,833
Unpaid Principal Balance With Related Allowance 594 2,042
Related Allowance 224 322
Originated Loans and Leases | Residential Real Estate - Home equity    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 3,492 3,507
Unpaid Principal Balance With No Related Allowance 3,521 3,535
Total Acquired Loans    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 3,097 5,547
Unpaid Principal Balance With No Related Allowance 3,609 6,230
Recorded Investment With Related Allowance 196 78
Unpaid Principal Balance With Related Allowance 196 78
Related Allowance 196 76
Recorded Investment 3,293 5,625
Unpaid Principal Balance 3,805 6,308
Total Acquired Loans | Commercial and Industrial Other    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 170 172
Unpaid Principal Balance With No Related Allowance 470 472
Total Acquired Loans | Commercial Real Estate Other    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 1,476 4,003
Unpaid Principal Balance With No Related Allowance 1,659 4,386
Recorded Investment With Related Allowance 76 78
Unpaid Principal Balance With Related Allowance 76 78
Related Allowance 76 76
Total Acquired Loans | Residential Real Estate - Home equity    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 1,451 1,372
Unpaid Principal Balance With No Related Allowance 1,480 1,372
Recorded Investment With Related Allowance 120 0
Unpaid Principal Balance With Related Allowance 120 0
Related Allowance 120 0
Total Acquired Loans | Commercial Real Estate - Construction    
Financing Receivable, Impaired [Line Items]    
Recorded Investment With No Related Allowance 0 0
Unpaid Principal Balance With No Related Allowance $ 0 $ 0