Loans Receivable And Allowance For Loan Losses: Schedule of Troubled Debt Restructurings by Portfolio Segment (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended					12 Months Ended
	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Jun. 30, 2013 Mortgage loans, one-to-four family		Jun. 30, 2013 Mortgage loans, commercial		Sep. 30, 2012	Sep. 30, 2012 Mortgage loans, one-to-four family		Sep. 30, 2012 Mortgage loans, commercial		Sep. 30, 2012 Mortgage loans, land
Financing Receivable, Modifications [Line Items]
Number of Contracts			3	2	[1]	1	[2]	3	1	[1]	1	[1]	1	[2]
Pre- Modification Outstanding Recorded Investment			$ 1,103	$ 353	[1]	$ 750	[2]	$ 3,340	$ 373	[1]	$ 2,718	[1]	$ 249	[2]
Post- Modification Outstanding Recorded Investment			1,103	353	[1]	750	[2]	3,340	373	[1]	2,718	[1]	249	[2]
Troubled debt restructurings, End of Period Balance	$ 21,449	$ 23,504	$ 1,097	$ 352	[1]	$ 745	[2]	$ 3,262	$ 372	[1]	$ 2,657	[1]	$ 233	[2]

[1] Modifications were a result of a combination of changes (a reduction in the stated interest rate; an extension of the maturity at an interest rate below current market; a reduction in the face amount of the debt; a reduction in the accrued interest; or re-aging, extensions, deferrals and renewals).

[2] Modification was a result of a reduction in the stated interest rate.