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Loans Receivable And Allowance For Loan Losses: Schedule of Loans receivable and Loans held for sale (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 4,831	$ 6,040
Total loans receivable		685,513	672,902
Undisbursed portion of construction loans in process		(47,596)	(53,457)
Deferred loan origination fees		(2,183)	(2,193)
Less: Allowance for loan losses		(9,889)	(9,924)
Total loans receivable, net		$ 625,845	$ 607,328
Ratio of loan category to total loans receivable (percent)		100.00%	100.00%
Total mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans		$ 604,183	$ 600,313
Ratio of loan category to total loans receivable (percent)		88.10%	89.30%
Mortgage loans, one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 2,694	$ 2,368
Mortgage loans	[1]	$ 118,507	$ 119,715
Ratio of loan category to total loans receivable (percent)	[1]	17.30%	17.80%
Mortgage loans, multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 0	$ 760
Mortgage loans		$ 47,980	$ 52,322
Ratio of loan category to total loans receivable (percent)		7.00%	7.80%
Mortgage loans, commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 1,184	$ 1,016
Mortgage loans		$ 295,595	$ 291,216
Ratio of loan category to total loans receivable (percent)		43.10%	43.30%
Mortgage loans, construction - custom and owner/builder
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 0	$ 0
Mortgage loans		$ 67,861	$ 62,954
Ratio of loan category to total loans receivable (percent)		9.90%	9.30%
Mortgage loans, construction - speculative one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 0	$ 0
Mortgage loans		$ 6,199	$ 6,668
Ratio of loan category to total loans receivable (percent)		0.90%	1.00%
Mortgage loans, construction – commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 0	$ 0
Mortgage loans		$ 22,213	$ 20,728
Ratio of loan category to total loans receivable (percent)		3.20%	3.10%
Mortgage loans, construction - Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 0	$ 0
Mortgage loans		$ 20,570	$ 20,570
Ratio of loan category to total loans receivable (percent)		3.00%	3.10%
Mortgage loans, land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 546	$ 1,558
Mortgage loans		$ 25,258	$ 26,140
Ratio of loan category to total loans receivable (percent)		3.70%	3.90%
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans		$ 40,444	$ 38,826
Ratio of loan category to total loans receivable (percent)		5.90%	5.70%
Consumer loans, home equity and second mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 300	$ 303
Consumer loans		$ 36,057	$ 34,157
Ratio of loan category to total loans receivable (percent)		5.30%	5.00%
Consumer loans, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		$ 34	$ 35
Consumer loans		$ 4,387	$ 4,669
Ratio of loan category to total loans receivable (percent)		0.60%	0.70%
[1] Includes loans held for sale.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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