Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	$ 209,327	$ 185,625
Total gross loans, net of deferred fees, After one but within five years	523,285	485,298
Total gross loans, net of deferred fees, After five years	567,217	492,721
Total gross loans, net of deferred fees	1,299,829	1,163,644
Loans maturing after one year with: fixed interest rates	822,399	733,892
Loans maturing after one year with: floating interest rates	268,103	244,127
Commercial [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	149,400	132,989
Total gross loans, net of deferred fees, After one but within five years	425,751	396,493
Total gross loans, net of deferred fees, After five years	282,696	231,975
Total gross loans, net of deferred fees	857,847	761,457
Commercial [Member] \| Owner occupied RE [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	27,023	26,062
Total gross loans, net of deferred fees, After one but within five years	163,848	145,419
Total gross loans, net of deferred fees, After five years	119,825	114,457
Total gross loans, net of deferred fees	310,696	285,938
Commercial [Member] \| Non-owner occupied RE [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	39,353	34,685
Total gross loans, net of deferred fees, After one but within five years	151,447	142,261
Total gross loans, net of deferred fees, After five years	101,201	62,628
Total gross loans, net of deferred fees	292,001	239,574
Commercial [Member] \| Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	12,303	5,881
Total gross loans, net of deferred fees, After one but within five years	9,210	9,558
Total gross loans, net of deferred fees, After five years	20,934	17,954
Total gross loans, net of deferred fees	42,447	33,393
Commercial [Member] \| Business [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	70,721	66,361
Total gross loans, net of deferred fees, After one but within five years	101,246	99,255
Total gross loans, net of deferred fees, After five years	40,736	36,936
Total gross loans, net of deferred fees	212,703	202,552
Consumer [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	59,927	52,636
Total gross loans, net of deferred fees, After one but within five years	97,534	88,805
Total gross loans, net of deferred fees, After five years	284,521	260,746
Total gross loans, net of deferred fees	441,982	402,187
Consumer [Member] \| Real estate [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	26,561	26,342
Total gross loans, net of deferred fees, After one but within five years	54,848	49,832
Total gross loans, net of deferred fees, After five years	151,992	139,414
Total gross loans, net of deferred fees	233,401	215,588
Consumer [Member] \| Home equity [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	9,382	7,142
Total gross loans, net of deferred fees, After one but within five years	30,130	29,041
Total gross loans, net of deferred fees, After five years	107,579	100,922
Total gross loans, net of deferred fees	147,091	137,105
Consumer [Member] \| Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	16,602	14,103
Total gross loans, net of deferred fees, After one but within five years	2,614	627
Total gross loans, net of deferred fees, After five years	20,542	17,192
Total gross loans, net of deferred fees	39,758	31,922
Consumer [Member] \| Other [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	7,382	5,049
Total gross loans, net of deferred fees, After one but within five years	9,942	9,305
Total gross loans, net of deferred fees, After five years	4,408	3,218
Total gross loans, net of deferred fees	$ 21,732	$ 17,572

Loans and Allowance for Loan Losses (Details 1) - USD ($)
$ in Thousands

Jun. 30, 2017

Dec. 31, 2016

Loan maturity distribution by type and related interest rate

Total gross loans, net of deferred fees, One year or less

$ 209,327

$ 185,625

Total gross loans, net of deferred fees, After one but within five years

523,285

485,298

Total gross loans, net of deferred fees, After five years

567,217