Loans Receivable And Allowance For Loan Losses: Past Due Status of Loans (Details) - USD ($) $ in Thousands		Jun. 30, 2016	Sep. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		$ 4,006	$ 7,168
Loans receivable, Non-Accrual	[1]	2,955	6,040
Loans receivable, Current		655,435	609,226
Loans receivable		659,441	616,394
Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		1,334	2,793
Loans receivable, Non-Accrual	[1]	1,236	2,368
Loans receivable, Current		115,721	113,871
Loans receivable		117,055	116,664
Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	760
Loans receivable, Non-Accrual	[1]	0	760
Loans receivable, Current		51,672	51,562
Loans receivable		51,672	52,322
Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		808	1,016
Loans receivable, Non-Accrual	[1]	808	1,016
Loans receivable, Current		294,079	290,200
Loans receivable		294,887	291,216
Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		367	345
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		50,484	35,847
Loans receivable		50,851	36,192
Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		3,773	3,781
Loans receivable		3,773	3,781
Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		16,495	12,200
Loans receivable		16,495	12,200
Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		14,089	5,290
Loans receivable		14,089	5,290
Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		722	1,605
Loans receivable, Non-Accrual	[1]	444	1,558
Loans receivable, Current		23,354	24,535
Loans receivable		24,076	26,140
Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		695	614
Loans receivable, Non-Accrual	[1]	436	303
Loans receivable, Current		37,787	33,543
Loans receivable		38,482	34,157
Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		80	35
Loans receivable, Non-Accrual	[1]	31	35
Loans receivable, Current		4,410	4,634
Loans receivable		4,490	4,669
Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Loans receivable, Non-Accrual	[1]	0	0
Loans receivable, Current		43,571	33,763
Loans receivable		43,571	33,763
30 to 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		388	161
30 to 59 Days Past Due | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
30 to 59 Days Past Due | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		215	15
30 to 59 Days Past Due | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		124	146
30 to 59 Days Past Due | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		49	0
30 to 59 Days Past Due | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		528	816
60 to 89 Days Past Due | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		98	425
60 to 89 Days Past Due | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		367	345
60 to 89 Days Past Due | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		63	32
60 to 89 Days Past Due | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	14
60 to 89 Days Past Due | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
60 to 89 Days Past Due | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		135	151
Past Due 90 Days or More and Still Accruing | Mortgage loans, one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - custom and owner/builder
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - speculative one-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, construction - Multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Mortgage loans, land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Consumer loans, home equity and second mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		135	151
Past Due 90 Days or More and Still Accruing | Consumer loans, other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		0	0
Past Due 90 Days or More and Still Accruing | Commercial business loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, Total Past Due		$ 0	$ 0

[1] Includes non-accrual loans past due 90 days or more and other loans classified as non-accrual.