Loans (Additional Information) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) loan	Sep. 30, 2014 USD ($) loan	Sep. 30, 2015 USD ($) loan	Sep. 30, 2014 USD ($) loan	Dec. 31, 2014 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans modified as troubled debt restructurings | loan	0	0	0	1
Increase (decrease) in allowance for loan losses	$ 0	$ 0	$ 0	$ 0
Charge-offs due to troubled debt restructurings	0	0	0	0
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring	0		0		$ 0
Carrying amount of consumer mortgage loans secured by residential real estate properties	123,000		123,000		$ 288,000
Troubled Debt Restructuring that Subsequently Defaulted
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge-offs due to troubled debt restructurings	0	0	95,000	0
Increase (decrease) in allowance for loan losses	0	0	0	0
Loans Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in allowance for loan losses	0	0	0	0
Loan losses reversed	$ 0	$ 0	$ 0	$ 0