Credit Quality of Loans and the Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Activity in the allowance for loan losses by portfolio segment
Beginning balance	$ 2,819	$ 3,328
Provision charged to expense	8	(141)
Losses charged off	(260)	(212)
Recoveries	7	2
Ending balance	2,574	2,977
One-to-four family residential [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	1,017	1,122
Provision charged to expense	(135)	(61)
Losses charged off		(34)
Recoveries	7
Ending balance	889	1,027
All other mortgage loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	1,526	1,925
Provision charged to expense	127	(18)
Losses charged off	(260)	(176)
Ending balance	1,393	1,731
Commercial business loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	271	275
Provision charged to expense	17	(63)
Recoveries		1
Ending balance	288	213
Consumer loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	5	6
Provision charged to expense	(1)	1
Losses charged off		(2)
Recoveries		1
Ending balance	$ 4	$ 6