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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	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 446		$ 776
Allowance for Loan Losses, Collectively Evaluated for Impairment	9,144		9,050
Allowance for Loan Losses, Total	9,590	$ 9,843	9,826	$ 10,043	$ 9,889	$ 9,924
Recorded Investment in Loans, Individually Evaluated for Impairment	10,088		16,237
Recorded Investment in Loans, Collectively Evaluated for Impairment	677,832		658,964
Loans receivable	687,920		675,201
Mortgage loans, one-to-four family
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	1		70
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,125		1,169
Allowance for Loan Losses, Total	1,126	1,177	1,239	1,323	1,420	1,480
Recorded Investment in Loans, Individually Evaluated for Impairment	1,779		2,264
Recorded Investment in Loans, Collectively Evaluated for Impairment	121,110		116,296
Loans receivable	122,889		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	480		473
Allowance for Loan Losses, Total	480	400	473	315	373	392
Recorded Investment in Loans, Individually Evaluated for Impairment	0		0
Recorded Investment in Loans, Collectively Evaluated for Impairment	63,181		62,303
Loans receivable	63,181		62,303
Mortgage loans, commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	108		413
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,208		3,971
Allowance for Loan Losses, Total	4,316	4,523	4,384	4,083	3,898	4,065
Recorded Investment in Loans, Individually Evaluated for Impairment	6,252		11,309
Recorded Investment in Loans, Collectively Evaluated for Impairment	318,868		301,216
Loans receivable	325,120		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	695		619
Allowance for Loan Losses, Total	695	636	619	542	555	451
Recorded Investment in Loans, Individually Evaluated for Impairment	0		367
Recorded Investment in Loans, Collectively Evaluated for Impairment	53,624		51,662
Loans receivable	53,624		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	85		130
Allowance for Loan Losses, Total	85	100	130	96	122	123
Recorded Investment in Loans, Individually Evaluated for Impairment	0		0
Recorded Investment in Loans, Collectively Evaluated for Impairment	2,649		4,074
Loans receivable	2,649		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	268		268
Allowance for Loan Losses, Total	268	282	268	617	486	426
Recorded Investment in Loans, Individually Evaluated for Impairment	0		0
Recorded Investment in Loans, Collectively Evaluated for Impairment	6,588		6,841
Loans receivable	6,588		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	96		316
Allowance for Loan Losses, Total	96	385	316	409	336	283
Recorded Investment in Loans, Individually Evaluated for Impairment	0		0
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,849		11,539
Loans receivable	3,849		11,539
Mortgage loans, land
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	13		53
Allowance for Loan Losses, Collectively Evaluated for Impairment	934		767
Allowance for Loan Losses, Total	947	836	820	954	923	1,021
Recorded Investment in Loans, Individually Evaluated for Impairment	1,001		1,268
Recorded Investment in Loans, Collectively Evaluated for Impairment	24,865		20,359
Loans receivable	25,866		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	307		227
Allowance for Loan Losses, Collectively Evaluated for Impairment	650		712
Allowance for Loan Losses, Total	957	859	939	1,021	1,102	1,073
Recorded Investment in Loans, Individually Evaluated for Impairment	974		999
Recorded Investment in Loans, Collectively Evaluated for Impairment	37,050		38,728
Loans receivable	38,024		39,727
Consumer loans, other
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	17		13
Allowance for Loan Losses, Collectively Evaluated for Impairment	113		143
Allowance for Loan Losses, Total	130	156	156	162	161	187
Recorded Investment in Loans, Individually Evaluated for Impairment	28		30
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,499		4,109
Loans receivable	3,527		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	490		482
Allowance for Loan Losses, Total	490	$ 489	482	$ 521	$ 513	$ 423
Recorded Investment in Loans, Individually Evaluated for Impairment	54		0
Recorded Investment in Loans, Collectively Evaluated for Impairment	42,549		41,837
Loans receivable	$ 42,603		$ 41,837

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- Definition

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

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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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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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-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
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-Paragraph 11B
-Subparagraph (h)
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