Fair Value Measurement: Estimated Fair Values of Financial Instruments (Details) (USD $)	Sep. 30, 2013	Sep. 30, 2012
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Repurchase agreements	$ 0	$ 838,000
Recorded Amount
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	94,496,000	96,668,000
CDs held for investment	30,042,000	23,490,000
MBS and other investments	6,838,000	8,284,000
FHLB stock	5,452,000	5,655,000
Loans receivable, net	546,193,000	537,053,000
Loans held for sale	1,911,000	1,427,000
Accrued interest receivable	1,972,000	2,183,000
Non-interest bearing demand	87,657,000	75,296,000
Interest-bearing	520,605,000	522,630,000
Total deposits	608,262,000	597,926,000
FHLB advances	45,000,000	45,000,000
Repurchase agreements		855,000
Accrued interest payable	320,000	404,000
Fair Value
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	94,496,000	96,668,000
CDs held for investment	30,042,000	23,490,000
MBS and other investments	7,634,000	8,577,000
FHLB stock	5,452,000	5,655,000
Loans receivable, net	514,616,000	502,147,000
Loans held for sale	1,973,000	1,504,000
Accrued interest receivable	1,972,000	2,183,000
Non-interest bearing demand	87,657,000	75,296,000
Interest-bearing	522,021,000	524,823,000
Total deposits	609,678,000	600,119,000
FHLB advances	48,445,000	51,115,000
Repurchase agreements		855,000
Accrued interest payable	320,000	404,000
Fair Value | Fair Value, Inputs, Level 1
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	94,496,000	96,668,000
CDs held for investment	30,042,000	23,490,000
MBS and other investments	973,000	1,043,000
FHLB stock	5,452,000	5,655,000
Loans receivable, net	0	0
Loans held for sale	1,973,000	1,504,000
Accrued interest receivable	1,972,000	2,183,000
Non-interest bearing demand	87,657,000	75,296,000
Interest-bearing	346,455,000	317,181,000
Total deposits	434,112,000	392,477,000
FHLB advances	0	0
Repurchase agreements		855,000
Accrued interest payable	320,000	404,000
Fair Value | Fair Value, Inputs, Level 2
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
CDs held for investment	0	0
MBS and other investments	6,661,000	7,534,000
FHLB stock	0	0
Loans receivable, net	0	0
Loans held for sale	0	0
Accrued interest receivable	0	0
Non-interest bearing demand	0	0
Interest-bearing	0	0
Total deposits	0	0
FHLB advances	48,445,000	51,115,000
Repurchase agreements		0
Accrued interest payable	0	0
Fair Value | Fair Value, Inputs, Level 3
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	0
CDs held for investment	0	0
MBS and other investments	0	0
FHLB stock	0	0
Loans receivable, net	514,616,000	502,147,000
Loans held for sale	0	0
Accrued interest receivable	0	0
Non-interest bearing demand	0	0
Interest-bearing	175,566,000	207,642,000
Total deposits	175,566,000	207,642,000
FHLB advances	0	0
Repurchase agreements		0
Accrued interest payable	$ 0	$ 0