Loans (Details 6) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012 item	Jun. 30, 2013 item	Jun. 30, 2012 item	Dec. 31, 2012
Loans
Recorded investment of troubled debt restructurings		$ 2,759,000		$ 4,107,000
Troubled debt restructurings, nonaccrual loans		1,581,000		1,798,000
Troubled debt restructurings, accruing loans		1,178,000		2,309,000
Specific reserves		804,000		1,152,000
Additional amount of loan classified as a troubled debt restructurings		0		0
Loans by class modified as troubled debt restructurings
Number of Contracts	1		2
Pre-modification Outstanding Recorded Investment	117,000		229,000
Post-modification Outstanding Recorded Investment	117,000		229,000
Net charge-offs under troubled debt restructurings	0		0
Increased allowance for loan losses due to troubled debt restructurings	13,000		44,000
Default period contractually past due under modified terms		30 days
Number of defaults on troubled debt restructurings	0	0	0
Commercial
Loans by class modified as troubled debt restructurings
Number of Contracts			1
Pre-modification Outstanding Recorded Investment			112,000
Post-modification Outstanding Recorded Investment			112,000
Consumer
Loans by class modified as troubled debt restructurings
Number of Contracts	1		1
Pre-modification Outstanding Recorded Investment	117,000		117,000
Post-modification Outstanding Recorded Investment	$ 117,000		$ 117,000