Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	$ 183,802	$ 184,786
Total gross loans, net of deferred fees, After one but within five years	438,152	418,434
Total gross loans, net of deferred fees, After five years	416,908	401,724
Total gross loans, net of deferred fees	1,038,862	1,004,944
Loans maturing after one year with fixed interest rates	639,180	612,251
Loans maturing after one year with floating interest rates	215,880	207,907
Commercial [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	125,577	130,808
Total gross loans, net of deferred fees, After one but within five years	360,480	343,884
Total gross loans, net of deferred fees, After five years	193,084	180,489
Total gross loans, net of deferred fees	679,141	655,181
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	22,287	16,836
Total gross loans, net of deferred fees, After one but within five years	115,323	126,156
Total gross loans, net of deferred fees, After five years	96,143	93,091
Total gross loans, net of deferred fees	233,753	236,083
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	35,109	40,690
Total gross loans, net of deferred fees, After one but within five years	127,437	111,087
Total gross loans, net of deferred fees, After five years	58,718	53,827
Total gross loans, net of deferred fees	221,264	205,604
Commercial [Member] | Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	5,068	9,183
Total gross loans, net of deferred fees, After one but within five years	26,986	23,206
Total gross loans, net of deferred fees, After five years	11,789	9,362
Total gross loans, net of deferred fees	43,843	41,751
Commercial [Member] | Business [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	63,113	64,099
Total gross loans, net of deferred fees, After one but within five years	90,734	83,435
Total gross loans, net of deferred fees, After five years	26,434	24,209
Total gross loans, net of deferred fees	180,281	171,743
Consumer [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	58,225	53,978
Total gross loans, net of deferred fees, After one but within five years	77,672	74,550
Total gross loans, net of deferred fees, After five years	223,824	221,235
Total gross loans, net of deferred fees	359,721	349,763
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	29,212	28,348
Total gross loans, net of deferred fees, After one but within five years	38,798	35,509
Total gross loans, net of deferred fees, After five years	107,944	110,945
Total gross loans, net of deferred fees	175,954	174,802
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	6,617	5,105
Total gross loans, net of deferred fees, After one but within five years	29,797	31,326
Total gross loans, net of deferred fees, After five years	82,474	80,132
Total gross loans, net of deferred fees	118,888	116,563
Consumer [Member] | Construction [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	15,226	14,095
Total gross loans, net of deferred fees, After one but within five years	2,067	1,445
Total gross loans, net of deferred fees, After five years	31,056	27,778
Total gross loans, net of deferred fees	48,349	43,318
Consumer [Member] | Other [Member]
Loan maturity distribution by type and related interest rate
Total gross loans, net of deferred fees, One year or less	7,170	6,430
Total gross loans, net of deferred fees, After one but within five years	7,010	6,270
Total gross loans, net of deferred fees, After five years	2,350	2,380
Total gross loans, net of deferred fees	$ 16,530	$ 15,080