Loans - Impaired Loans Summary (Details 7) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Impaired loans summary
Nonaccrual loans	$ 3,789,000		$ 2,127,000
Accruing loans past due 90 days or more	7,000		16,000
Restructured loans - nonaccrual	3,113,000		2,717,000
Restructured loans - accruing	2,390,000		2,257,000
Total nonperforming loans	9,299,000		7,117,000
Impaired loans, other infomation
Impaired loans, allowance	433,000		468,000
Impaired loans, average recorded investment	9,100,000		11,700,000
Nonaccrual loans, interest recognized	53,000	55,000
Total nonaccrual loans	6,900,000		4,800,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 164,000	$ 398,000