Loans (Details 8) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Risk category of loans by class of loans
Total risk category of loans by class of loans	$ 297,763	$ 272,916
Pass [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	257,764	229,265
Special Mention [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	20,797	15,198
Sub-standard [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	19,202	28,142
Doubtful [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	311
Not Rated [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial real estate, Owner occupied [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	94,881	100,381
Commercial real estate, Owner occupied [Member] | Pass [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	78,327	80,770
Commercial real estate, Owner occupied [Member] | Special Mention [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	5,954	6,359
Commercial real estate, Owner occupied [Member] | Sub-standard [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	10,600	13,201
Commercial real estate, Owner occupied [Member] | Doubtful [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	51
Commercial real estate, Owner occupied [Member] | Not Rated [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial real estate, Non-owner occupied [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	83,119	80,323
Commercial real estate, Non-owner occupied [Member] | Pass [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	72,270	68,806
Commercial real estate, Non-owner occupied [Member] | Special Mention [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	6,519	2,575
Commercial real estate, Non-owner occupied [Member] | Sub-standard [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	4,330	8,942
Commercial real estate, Non-owner occupied [Member] | Doubtful [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial real estate, Non-owner occupied [Member] | Not Rated [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial real estate, Other[Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	22,651	17,337
Commercial real estate, Other[Member] | Pass [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	17,855	14,491
Commercial real estate, Other[Member] | Special Mention [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	4,433	301
Commercial real estate, Other[Member] | Sub-standard [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	363	2,545
Commercial real estate, Other[Member] | Doubtful [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial real estate, Other[Member] | Not Rated [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Commercial [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	97,112	74,875
Commercial [Member] | Pass [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	89,312	65,198
Commercial [Member] | Special Mention [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	3,891	5,963
Commercial [Member] | Sub-standard [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	3,909	3,454
Commercial [Member] | Doubtful [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	260
Commercial [Member] | Not Rated [Member]
Risk category of loans by class of loans
Total risk category of loans by class of loans	$ 0	$ 0