Estimated Fair Value of Financial Instruments - Additional Information (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014 Collateral Dependent Loans [Member]	Jun. 30, 2013 Collateral Dependent Loans [Member]	Jun. 30, 2014 Collateral Dependent Loans [Member]	Jun. 30, 2013 Collateral Dependent Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, principal balance				$ 3,210	$ 5,096	$ 3,210	$ 5,096
Impaired loans, valuation allowance	857	938	1,669	857	1,699	857	1,699
Impaired loans, reduction in loan losses				$ 5	$ 300	$ 11	$ 3