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Loans Receivable And Allowance For Loan Losses: Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 756	$ 776
Allowance for Loan Losses, Collectively Evaluated for Impairment	9,087	9,050
Allowance for Loan Losses, Total	9,843	9,826	$ 9,889	$ 9,924
Recorded Investment in Loans, Individually Evaluated for Impairment	15,630	16,237
Recorded Investment in Loans, Collectively Evaluated for Impairment	665,537	658,964
Loans receivable	681,167	675,201
Mortgage loans, one-to-four family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	68	70
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,109	1,169
Allowance for Loan Losses, Total	1,177	1,239	1,420	1,480
Recorded Investment in Loans, Individually Evaluated for Impairment	2,190	2,264
Recorded Investment in Loans, Collectively Evaluated for Impairment	117,295	116,296
Loans receivable	119,485	118,560
Mortgage loans, multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	400	473
Allowance for Loan Losses, Total	400	473	373	392
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	52,062	62,303
Loans receivable	52,062	62,303
Mortgage loans, commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	406	413
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,117	3,971
Allowance for Loan Losses, Total	4,523	4,384	3,898	4,065
Recorded Investment in Loans, Individually Evaluated for Impairment	10,615	11,309
Recorded Investment in Loans, Collectively Evaluated for Impairment	312,881	301,216
Loans receivable	323,496	312,525
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	636	619
Allowance for Loan Losses, Total	636	619	555	451
Recorded Investment in Loans, Individually Evaluated for Impairment	367	367
Recorded Investment in Loans, Collectively Evaluated for Impairment	53,181	51,662
Loans receivable	53,548	52,029
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	100	130
Allowance for Loan Losses, Total	100	130	122	123
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,118	4,074
Loans receivable	3,118	4,074
Mortgage loans, construction – commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	282	268
Allowance for Loan Losses, Total	282	268	486	426
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	6,860	6,841
Loans receivable	6,860	6,841
Mortgage loans, construction - Multi-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	385	316
Allowance for Loan Losses, Total	385	316	336	283
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	15,457	11,539
Loans receivable	15,457	11,539
Mortgage loans, land
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	52	53
Allowance for Loan Losses, Collectively Evaluated for Impairment	784	767
Allowance for Loan Losses, Total	836	820	923	1,021
Recorded Investment in Loans, Individually Evaluated for Impairment	1,448	1,268
Recorded Investment in Loans, Collectively Evaluated for Impairment	20,911	20,359
Loans receivable	22,359	21,627
Consumer loans, home equity and second mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	217	227
Allowance for Loan Losses, Collectively Evaluated for Impairment	642	712
Allowance for Loan Losses, Total	859	939	1,102	1,073
Recorded Investment in Loans, Individually Evaluated for Impairment	981	999
Recorded Investment in Loans, Collectively Evaluated for Impairment	36,621	38,728
Loans receivable	37,602	39,727
Consumer loans, other
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	13	13
Allowance for Loan Losses, Collectively Evaluated for Impairment	143	143
Allowance for Loan Losses, Total	156	156	161	187
Recorded Investment in Loans, Individually Evaluated for Impairment	29	30
Recorded Investment in Loans, Collectively Evaluated for Impairment	4,494	4,109
Loans receivable	4,523	4,139
Commercial business loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	489	482
Allowance for Loan Losses, Total	489	482	$ 513	$ 423
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	42,657	41,837
Loans receivable	$ 42,657	$ 41,837

X

- Definition

Loans Receivable, Including Loans Held-For-Sale and Loans in Process, Gross

+ References

No definition available.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ 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 (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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+ 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

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+ 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

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+ References

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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