Credit Quality of Loans and Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Non-accrual loans	$ 5,312	$ 5,256
One-to-four family residential
Non-accrual loans	2,377	2,097
Nonresidential real estate and land
Non-accrual loans	2,903	3,123
All other mortgage loans
Non-accrual loans
Commercial business loans
Non-accrual loans	30	32
Consumer loans
Non-accrual loans	$ 2	$ 4