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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, 2016	Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivable	$ 735,328	$ 723,828
Undisbursed portion of construction loans in process	54,161	48,627
Deferred loan origination fees	2,184	2,229
Allowance for loan losses	9,843	9,826
Less: Loans in process, Deferred fees and Allowance for loan losses	66,188	60,682
Loans receivable, net	$ 669,140	$ 663,146	[1]
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	$ 650,546	$ 638,125
Ratio of loan category to total loans receivable (percent)	88.40%	88.20%
Mortgage loans, one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 119,485	$ 118,560
Ratio of loan category to total loans receivable (percent)	16.20%	16.40%
Mortgage loans, multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 52,062	$ 62,303
Ratio of loan category to total loans receivable (percent)	7.10%	8.60%
Mortgage loans, commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 323,496	$ 312,525
Ratio of loan category to total loans receivable (percent)	44.00%	43.20%
Mortgage loans, construction - custom and owner/builder
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 96,292	$ 93,049
Ratio of loan category to total loans receivable (percent)	13.10%	12.90%
Mortgage loans, construction - speculative one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 6,133	$ 8,106
Ratio of loan category to total loans receivable (percent)	0.80%	1.10%
Mortgage loans, construction – commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 8,627	$ 9,365
Ratio of loan category to total loans receivable (percent)	1.20%	1.30%
Mortgage loans, construction - Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 22,092	$ 12,590
Ratio of loan category to total loans receivable (percent)	3.00%	1.70%
Mortgage loans, land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans	$ 22,359	$ 21,627
Ratio of loan category to total loans receivable (percent)	3.00%	3.00%
Total consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 42,125	$ 43,866
Ratio of loan category to total loans receivable (percent)	5.80%	6.00%
Consumer loans, home equity and second mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 37,602	$ 39,727
Ratio of loan category to total loans receivable (percent)	5.10%	5.50%
Consumer loans, other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer loans	$ 4,523	$ 4,139
Ratio of loan category to total loans receivable (percent)	0.70%	0.50%
Commercial business loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial business loans	$ 42,657	$ 41,837
Ratio of loan category to total loans receivable (percent)	5.80%	5.80%
[1] Derived from audited consolidated financial statements.

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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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