Loans and Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Summary of key information for impaired loans
Unpaid Principal Balance	$ 20,733	$ 20,291
Impaired Loans	16,390	16,382
Impaired loans with related allowance for loan losses	13,370	14,143
Related allowance for loan losses	5,071	4,729
Commercial [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	17,955	17,998
Impaired Loans	13,634	14,111
Impaired loans with related allowance for loan losses	11,188	12,453
Related allowance for loan losses	4,065	3,833
Commercial [Member] | Owner occupied RE [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	1,926	1,935
Impaired Loans	1,926	1,935
Impaired loans with related allowance for loan losses	1,666	1,666
Related allowance for loan losses	333	333
Commercial [Member] | Non-owner occupied RE [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	5,926	5,957
Impaired Loans	5,157	5,622
Impaired loans with related allowance for loan losses	4,819	6,125
Related allowance for loan losses	1,554	1,441
Commercial [Member] | Construction [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	4,529	4,612
Impaired Loans	1,787	1,870
Impaired loans with related allowance for loan losses	1,787	1,855
Related allowance for loan losses	194	246
Commercial [Member] | Business [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	5,574	5,494
Impaired Loans	4,764	4,684
Impaired loans with related allowance for loan losses	2,916	2,807
Related allowance for loan losses	1,984	1,813
Consumer [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	2,778	2,293
Impaired Loans	2,756	2,271
Impaired loans with related allowance for loan losses	2,182	1,690
Related allowance for loan losses	1,006	896
Consumer [Member] | Real estate [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	2,399	1,829
Impaired Loans	2,377	1,807
Impaired loans with related allowance for loan losses	2,020	1,447
Related allowance for loan losses	844	704
Consumer [Member] | Home equity [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	162	239
Impaired Loans	162	239
Impaired loans with related allowance for loan losses	162	239
Related allowance for loan losses	162	188
Consumer [Member] | Construction [Member]
Summary of key information for impaired loans
Unpaid Principal Balance
Impaired Loans
Impaired loans with related allowance for loan losses
Related allowance for loan losses
Consumer [Member] | Other [Member]
Summary of key information for impaired loans
Unpaid Principal Balance	217	225
Impaired Loans	217	225
Impaired loans with related allowance for loan losses		4
Related allowance for loan losses		$ 4