Loans Receivable And Allowance For Loan Losses: Impaired Financing Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Recorded Investment
With no related allowance recorded	$ 11,059	$ 15,137
With an allowance recorded	13,372	18,337
Total	24,431	33,474
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	13,133	20,603
With an allowance recorded	13,372	18,337
Total	26,505	38,940
Related Allowance	(1,011)	(2,007)
YTD Average Recorded Investment
With no related allowance recorded	12,983	13,169
With an allowance recorded	14,458	22,839
Total	27,441	36,008
YTD Interest Income Recognized
With no related allowance recorded	574	426
With an allowance recorded	585	952
Total	1,159	1,378
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	460	335
With an allowance recorded	443	733
Total	903	1,068
Mortgage loans, one-to-four family
Recorded Investment
With no related allowance recorded	1,321	2,647	$ 5,342
With an allowance recorded	2,970	4,364	3,642
Total	4,291	7,011	8,984
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	1,546	3,301	5,775
With an allowance recorded	2,970	4,364	3,726
Total	4,516	7,665	9,501
Related Allowance	(307)	(709)	(600)
YTD Average Recorded Investment
With no related allowance recorded	1,919	3,763	2,661
With an allowance recorded	3,833	4,140	4,397
Total	5,752	7,903	7,058
YTD Interest Income Recognized
With no related allowance recorded	25	0	18
With an allowance recorded	149	146	91
Total	174	146	109
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	25	0	13
With an allowance recorded	112	110	68
Total	137	110	81
Mortgage loans, multi-family
Recorded Investment
With no related allowance recorded	760	0	0
With an allowance recorded	3,277	3,317	5,184
Total	4,037	3,317	5,184
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	791	857	982
With an allowance recorded	3,277	3,317	5,184
Total	4,068	4,174	6,166
Related Allowance	(16)	(39)	(334)
YTD Average Recorded Investment
With no related allowance recorded	570	0	473
With an allowance recorded	3,291	4,157	5,960
Total	3,861	4,157	6,433
YTD Interest Income Recognized
With no related allowance recorded	3	0	3
With an allowance recorded	184	220	301
Total	187	220	304
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	3	0	3
With an allowance recorded	137	165	230
Total	140	165	233
Mortgage loans, commercial
Recorded Investment
With no related allowance recorded	7,199	11,057	4,879
With an allowance recorded	5,653	6,131	14,631
Total	12,852	17,188	19,510
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	8,259	14,184	8,005
With an allowance recorded	5,653	6,131	15,297
Total	13,912	20,315	23,302
Related Allowance	(265)	(797)	(1,763)
YTD Average Recorded Investment
With no related allowance recorded	9,078	7,859	8,781
With an allowance recorded	3,475	10,083	9,052
Total	12,553	17,942	17,833
YTD Interest Income Recognized
With no related allowance recorded	521	414	322
With an allowance recorded	202	541	526
Total	723	955	848
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	412	325	267
With an allowance recorded	152	423	420
Total	564	748	687
Mortgage loans, construction - custom and owner/builder
Recorded Investment
With no related allowance recorded	0		0
With an allowance recorded	0		0
Total	0		0
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	0		0
With an allowance recorded	0		0
Total	0		0
Related Allowance	0		0
YTD Average Recorded Investment
With no related allowance recorded	118		97
With an allowance recorded	17		60
Total	135		157
YTD Interest Income Recognized
With no related allowance recorded	0		0
With an allowance recorded	0		0
Total	0		0
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	0		0
With an allowance recorded	0		0
Total	0		0
Mortgage loans, construction - speculative one-to-four family
Recorded Investment
With no related allowance recorded			0
With an allowance recorded		0	687
Total		0	687
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded			0
With an allowance recorded		0	687
Total		0	687
Related Allowance		0	(88)
YTD Average Recorded Investment
With no related allowance recorded			65
With an allowance recorded		275	695
Total		275	760
YTD Interest Income Recognized
With no related allowance recorded			0
With an allowance recorded		11	29
Total		11	29
YTD Cash Basis Interest Income Recognized
With no related allowance recorded			0
With an allowance recorded		7	16
Total		7	16
Mortgage loans, construction - multi-family
Recorded Investment
With no related allowance recorded		0	143
Total		0	143
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		0	608
Total		0	608
Related Allowance		0	0
YTD Average Recorded Investment
With no related allowance recorded		57	293
Total		57	293
YTD Interest Income Recognized
With no related allowance recorded		0	0
Total		0	0
YTD Cash Basis Interest Income Recognized
With no related allowance recorded		0	0
Total		0	0
Mortgage loans, construction - land development
Recorded Investment
With no related allowance recorded		0	515
Total		0	515
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		0	3,279
Total		0	3,279
Related Allowance		0	0
YTD Average Recorded Investment
With no related allowance recorded		141	534
Total		141	534
YTD Interest Income Recognized
With no related allowance recorded		0	0
Total		0	0
YTD Cash Basis Interest Income Recognized
With no related allowance recorded		0	0
Total		0	0
Mortgage loans, land
Recorded Investment
With no related allowance recorded	1,614	1,079	1,188
With an allowance recorded	691	4,079	1,203
Total	2,305	5,158	2,391
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	2,150	1,674	2,133
With an allowance recorded	691	4,079	1,226
Total	2,841	5,753	3,359
Related Allowance	(37)	(300)	(234)
YTD Average Recorded Investment
With no related allowance recorded	1,028	1,044	3,519
With an allowance recorded	3,298	3,780	1,962
Total	4,326	4,824	5,481
YTD Interest Income Recognized
With no related allowance recorded	25	12	9
With an allowance recorded	32	18	27
Total	57	30	36
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	20	10	8
With an allowance recorded	27	16	27
Total	47	26	35
Consumer loans, home equity and second mortgage
Recorded Investment
With no related allowance recorded	165	351	380
With an allowance recorded	745	446	299
Total	910	797	679
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	381	574	556
With an allowance recorded	745	446	299
Total	1,126	1,020	855
Related Allowance	(362)	(162)	(57)
YTD Average Recorded Investment
With no related allowance recorded	270	276	266
With an allowance recorded	516	404	352
Total	786	680	618
YTD Interest Income Recognized
With no related allowance recorded	0	0	0
With an allowance recorded	18	16	16
Total	18	16	16
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	0	0	0
With an allowance recorded	15	12	12
Total	15	12	12
Consumer loans, other
Recorded Investment
With no related allowance recorded		3	6
Total	36	3	6
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded		3	6
Total	36	3	6
Related Allowance	(24)	0	0
YTD Average Recorded Investment
With no related allowance recorded		7	8
Total	28	7	8
YTD Interest Income Recognized
With no related allowance recorded		0	0
Total	0	0	0
YTD Cash Basis Interest Income Recognized
With no related allowance recorded		0	0
Total	0	0	0
Commercial business loans
Recorded Investment
With no related allowance recorded	0	0	0
Total	0	0	0
Unpaid Principal Balance (Loan Balance Plus Charge Off)
With no related allowance recorded	6	10	33
Total	6	10	33
Related Allowance	0	0	0
YTD Average Recorded Investment
With no related allowance recorded	0	22	0
Total	0	22	0
YTD Interest Income Recognized
With no related allowance recorded	0	0	0
Total	0	0	0
YTD Cash Basis Interest Income Recognized
With no related allowance recorded	0	0	0
Total	$ 0	$ 0	$ 0