Credit Quality of Loans and the Allowance for Loan Losses (Schedule of Non-accrual Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 1,558	$ 1,941
One-to-four family residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	1,392	1,733
Nonresidential real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	166	208
All other mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans
Commercial business loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans