Credit Quality of Loans and the Allowance for Loan Losses (Schedule of Activity in Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Activity in the allowance for loan losses by portfolio segment
Beginning balance	$ 2,776	$ 2,668	$ 2,837	$ 2,769
Provision charged to expense	208	357	152	1,071
Losses charged off	(78)	(278)	(84)	(1,137)
Recoveries	1	3	2	47
Ending balance	2,907	2,750	2,907	2,750
One-to-four family residential [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	1,582	1,115	1,346	1,533
Provision charged to expense	(105)	562	130	959
Losses charged off		(278)		(1,137)
Recoveries		2	1	46
Ending balance	1,477	1,401	1,477	1,401
All other mortgage loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	957	1,164	1,210	885
Provision charged to expense	238	(99)	(10)	180
Losses charged off	(78)		(83)
Recoveries
Ending balance	1,117	1,065	1,117	1,065
Commercial business loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	234	346	279	343
Provision charged to expense	75	(68)	30	(65)
Losses charged off
Recoveries	1	1	1	1
Ending balance	310	279	310	279
Consumer loans [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance	3	5	2	8
Provision charged to expense			2	(3)
Losses charged off			(1)
Recoveries
Ending balance	3	5	3	5
Unallocated [Member]
Activity in the allowance for loan losses by portfolio segment
Beginning balance		38
Provision charged to expense		(38)
Losses charged off
Recoveries
Ending balance

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

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