Loans (Details 5) (USD $)	3 Months Ended
	Mar. 31, 2015 item	Mar. 31, 2014 item	Dec. 31, 2014
Troubled Debt Restructurings (TDRs)
Total TDR loans	$ 7,100,000		$ 7,200,000
Number of restructurings	5	3
Pre-modification outstanding recorded investment	521,000	834,000
Post-modification outstanding recorded investment	521,000	834,000
Impact on allowance for loan losses	4,000	17,000
Charge-offs	0
Troubled debt restructurings that subsequently defaulted within 12 months of restructuring
Number of TDR's that defaulted	3	4
Post-modification outstanding recorded investment	479,000	878,000
Residential 1-4 family
Troubled Debt Restructurings (TDRs)
Number of restructurings	1	3
Pre-modification outstanding recorded investment	289,000	834,000
Post-modification outstanding recorded investment	289,000	834,000
Troubled debt restructurings that subsequently defaulted within 12 months of restructuring
Number of TDR's that defaulted	2	4
Post-modification outstanding recorded investment	470,000	878,000
Home equity and lines of credit
Troubled Debt Restructurings (TDRs)
Number of restructurings	3
Pre-modification outstanding recorded investment	113,000
Post-modification outstanding recorded investment	113,000
Commercial real estate
Troubled Debt Restructurings (TDRs)
Number of restructurings	1
Pre-modification outstanding recorded investment	119,000
Post-modification outstanding recorded investment	119,000
SBA
Troubled debt restructurings that subsequently defaulted within 12 months of restructuring
Number of TDR's that defaulted	1
Post-modification outstanding recorded investment	9,000
Accrual status
Troubled Debt Restructurings (TDRs)
Total TDR loans	$ 2,700,000		$ 2,900,000