Credit Quality of Loans and the Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Activity in the allowance for loan losses by portfolio segment
Beginning balance	$ 2,574	$ 2,977	$ 2,819	$ 3,328
Provision charged to expense	79	10	87	(131)
Losses charged off	(123)	(4)	(383)	(216)
Recoveries	19	4	26	6
Ending balance	2,549	2,987	2,549	2,987
One-to-four family residential [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	889	1,027	1,017	1,122
Provision charged to expense	63	216	(72)	155
Losses charged off	(11)	(4)	(11)	(38)
Recoveries			7
Ending balance	941	1,239	941	1,239
All other mortgage loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	1,393	1,731	1,526	1,925
Provision charged to expense	(255)	(174)	(128)	(192)
Losses charged off			(260)	(176)
Recoveries	17		17
Ending balance	1,155	1,557	1,155	1,557
Commercial business loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	288	213	271	275
Provision charged to expense	271	(29)	288	(92)
Losses charged off	(112)		(112)
Recoveries	2	1	2	2
Ending balance	449	185	449	185
Consumer loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	4	6	5	6
Provision charged to expense		(3)	(1)	(2)
Losses charged off				(2)
Recoveries		3		4
Ending balance	$ 4	$ 6	$ 4	$ 6