Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	$ 201,383	$ 203,121
Total gross loans, net of deferred fees, After one but within five years	469,186	371,209
Total gross loans, net of deferred fees, After five years	322,664	297,116
Total gross loans, net of deferred fees	993,233	871,446
Loans maturing after one year with fixed interest rates	590,605	494,058
Loans maturing after one year with floating interest rates	201,247	174,267
Commercial [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	143,021	155,096
Total gross loans, net of deferred fees, After one but within five years	380,152	293,556
Total gross loans, net of deferred fees, After five years	130,635	126,830
Total gross loans, net of deferred fees	653,808	575,482
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	18,701	20,737
Total gross loans, net of deferred fees, After one but within five years	146,061	98,110
Total gross loans, net of deferred fees, After five years	73,235	72,214
Total gross loans, net of deferred fees	237,997	191,061
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	39,960	46,718
Total gross loans, net of deferred fees, After one but within five years	130,607	104,402
Total gross loans, net of deferred fees, After five years	42,210	32,320
Total gross loans, net of deferred fees	212,777	183,440
Commercial [Member] | Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	13,882	11,923
Total gross loans, net of deferred fees, After one but within five years	16,258	25,145
Total gross loans, net of deferred fees, After five years	2,845	13,927
Total gross loans, net of deferred fees	32,985	50,995
Commercial [Member] | Business [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	70,478	75,718
Total gross loans, net of deferred fees, After one but within five years	87,226	65,899
Total gross loans, net of deferred fees, After five years	12,345	8,369
Total gross loans, net of deferred fees	170,049	149,986
Consumer [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	58,362	48,025
Total gross loans, net of deferred fees, After one but within five years	89,034	77,653
Total gross loans, net of deferred fees, After five years	192,029	170,286
Total gross loans, net of deferred fees	339,425	295,964
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	28,269	21,571
Total gross loans, net of deferred fees, After one but within five years	47,668	41,549
Total gross loans, net of deferred fees, After five years	92,901	83,739
Total gross loans, net of deferred fees	168,838	146,859
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	4,842	5,645
Total gross loans, net of deferred fees, After one but within five years	32,466	28,394
Total gross loans, net of deferred fees, After five years	74,486	61,590
Total gross loans, net of deferred fees	111,794	95,629
Consumer [Member] | Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	17,661	13,531
Total gross loans, net of deferred fees, After one but within five years	2,835	2,073
Total gross loans, net of deferred fees, After five years	23,059	23,622
Total gross loans, net of deferred fees	43,555	39,226
Consumer [Member] | Other [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	7,590	7,278
Total gross loans, net of deferred fees, After one but within five years	6,065	5,637
Total gross loans, net of deferred fees, After five years	1,583	1,335
Total gross loans, net of deferred fees	$ 15,238	$ 14,250