Allowance for Loan and Lease Losses (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Ending balance $ 37,157   $ 35,755      
Originated Loans and Leases            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 293   417      
Collectively evaluated for impairment 36,667   35,181      
Ending balance 36,960 $ 35,915 35,598 $ 32,968 $ 31,981 $ 31,312
Originated Loans and Leases | Commercial and industrial, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 293   95      
Collectively evaluated for impairment 10,549   9,294      
Ending balance 10,842 10,273 9,389 8,937 9,291 10,495
Originated Loans and Leases | Commercial real estate, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   322      
Collectively evaluated for impairment 19,121   19,514      
Ending balance 19,121 19,114 19,836 18,229 17,108 15,479
Originated Loans and Leases | Residential real estate, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 5,761   5,149      
Ending balance 5,761 5,386 5,149 4,486 4,275 4,070
Originated Loans and Leases | Consumer and other, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 1,236   1,224      
Ending balance 1,236 1,142 1,224 1,316 1,307 1,268
Originated Loans and Leases | Finance Leases            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 0   0      
Ending balance 0 0 0 0 0 0
Total Acquired Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 125   76      
Collectively evaluated for impairment 72   81      
Ending balance 197 251 157 157 549 692
Total Acquired Loans | Commercial and industrial, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 50   0      
Collectively evaluated for impairment 0   0      
Ending balance 50 0 0 47 433 433
Total Acquired Loans | Commercial real estate, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 75   76      
Collectively evaluated for impairment 12   21      
Ending balance 87 76 97 65 33 61
Total Acquired Loans | Residential real estate, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 54   54      
Ending balance 54 169 54 23 59 198
Total Acquired Loans | Consumer and other, total            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 6   6      
Ending balance 6 6 6 22 24 0
Total Acquired Loans | Finance Leases            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Ending balance 0 $ 0        
Total Acquired Loans | Covered Loans            
Accounts, Notes, Loans and Financing Receivable [Line Items]            
Individually evaluated for impairment 0   0      
Collectively evaluated for impairment 0   0      
Ending balance $ 0   $ 0 $ 0 $ 0 $ 0