Credit Quality Indicators (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Risk category of loans by class of loans
Total risk category of loans by class of loans	$ 353,743	$ 342,723
Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	77,505	74,631
Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	124,929	121,913
Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	28,886	26,029
Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	122,423	120,150
Pass
Risk category of loans by class of loans
Total risk category of loans by class of loans	339,096	321,314
Pass | Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	70,516	66,036
Pass | Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	121,781	115,159
Pass | Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	28,572	25,710
Pass | Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	118,227	114,409
Special Mention
Risk category of loans by class of loans
Total risk category of loans by class of loans	3,028	7,860
Special Mention | Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	1,022	2,534
Special Mention | Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	487	3,760
Special Mention | Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Special Mention | Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	1,519	1,566
Substandard
Risk category of loans by class of loans
Total risk category of loans by class of loans	11,619	13,549
Substandard | Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	5,967	6,061
Substandard | Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	2,661	2,994
Substandard | Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	314	319
Substandard | Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	2,677	4,175
Doubtful
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Doubtful | Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Doubtful | Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Doubtful | Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Doubtful | Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Not Rated
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Not Rated | Commercial real estate, Owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Not Rated | Commercial real estate, Non-owner occupied
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Not Rated | Commercial real estate, Other
Risk category of loans by class of loans
Total risk category of loans by class of loans	0	0
Not Rated | Commercial
Risk category of loans by class of loans
Total risk category of loans by class of loans	$ 0	$ 0