Loans (Additional Information) (Details) (USD $)	3 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Troubled Debt Restructuring	Sep. 30, 2013 Troubled Debt Restructuring	Sep. 30, 2014 Troubled Debt Restructuring	Sep. 30, 2013 Troubled Debt Restructuring	Sep. 30, 2014 Troubled Debt Restructuring that Subsequently Defaulted	Sep. 30, 2013 Troubled Debt Restructuring that Subsequently Defaulted	Sep. 30, 2014 Troubled Debt Restructuring that Subsequently Defaulted	Sep. 30, 2013 Troubled Debt Restructuring that Subsequently Defaulted	Sep. 30, 2014 Loans Purchased	Sep. 30, 2013 Loans Purchased	Sep. 30, 2014 Loans Purchased	Sep. 30, 2013 Loans Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring	$ 0	$ 40,000
Increase (decrease) in allowance for loan losses	(63,000)		0	0	0	(210,000)	0	0	0	0	27,000	(141,000)	27,000	(80,000)
Charge-offs due to troubled debt restructurings			0	0	0	0	0	0	0	0
Loan losses reversed											$ 0	$ 0	$ 0	$ 0