Loans and Allowance for Loan Losses (Schedule of Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) N	Dec. 31, 2015 USD ($) N
Number of Loans | N	12
Pre-modification Unpaid Principal Balance	$ 914
Post- modification Unpaid Principal Balance	$ 914
One-to-four family residential [Member]
Number of Loans | N	8	1
Pre-modification Unpaid Principal Balance	$ 406	$ 17
Post- modification Unpaid Principal Balance	$ 406	$ 17
Commercial business loans [Member]
Number of Loans | N	4
Pre-modification Unpaid Principal Balance	$ 508
Post- modification Unpaid Principal Balance	$ 508