Fair Value Measurements: Schedule of estimated fair values of financial instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Sep. 30, 2013
Recorded Amount
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 63,967	$ 94,496
CDs held for investment	32,336	30,042
MBS and other investments	8,345	6,838
FHLB stock	5,299	5,452
Loans receivable, net	556,194	546,193
Loans held for sale	1,501	1,911
Accrued interest receivable	1,922	1,972
Non-interest-bearing demand	92,995	87,657
Interest-bearing	505,637	520,605
Total deposits	598,632	608,262
FHLB advances	45,000	45,000
Accrued interest payable	294	320
Fair Value
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	63,967	94,496
CDs held for investment	32,336	30,042
MBS and other investments	9,213	7,634
FHLB stock	5,299	5,452
Loans receivable, net	544,485	534,364
Loans held for sale	1,552	1,973
Accrued interest receivable	1,922	1,972
Non-interest-bearing demand	92,995	87,657
Interest-bearing	506,392	522,021
Total deposits	599,387	609,678
FHLB advances	47,702	48,445
Accrued interest payable	294	320
Fair Value | Fair Value, Inputs, Level 1
Fair value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	63,967	94,496
CDs held for investment	32,336	30,042
MBS and other investments	961	973
FHLB stock	5,299	5,452
Loans receivable, net	0	0
Loans held for sale	1,552	1,973
Accrued interest receivable	1,922	1,972
Non-interest-bearing demand	92,995	87,657
Interest-bearing	345,394	346,455
Total deposits	438,389	434,112
FHLB advances	0	0
Accrued interest payable	294	320
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	8,212	6,661
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	47,702	48,445
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	40	0
FHLB stock	0	0
Loans receivable, net	544,485	534,364
Loans held for sale	0	0
Accrued interest receivable	0	0
Non-interest-bearing demand	0	0
Interest-bearing	160,998	175,566
Total deposits	160,998	175,566
FHLB advances	0	0
Accrued interest payable	$ 0	$ 0