Fair Value Accounting (Details 1) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Impaired loans	$ 10,166	$ 11,653
Other real estate owned	3,307	1,198
Total assets measured at fair value on a nonrecurring basis	13,473	12,851
Fair Value, Inputs, Level 1 [Member]
Assets
Impaired loans
Other real estate owned
Total assets measured at fair value on a nonrecurring basis
Fair Value, Inputs, Level 2 [Member]
Assets
Impaired loans	9,461	10,495
Other real estate owned	3,040	1,085
Total assets measured at fair value on a nonrecurring basis	12,501	11,580
Fair Value, Inputs, Level 3 [Member]
Assets
Impaired loans	705	1,158
Other real estate owned	267	113
Total assets measured at fair value on a nonrecurring basis	$ 972	$ 1,271