Allowance for Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012
Financing Receivable, Modifications, Number of Contracts	2		13
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 2,605		$ 17,059
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,574		15,841
Commercial business
Financing Receivable, Modifications, Number of Contracts			2
Financing Receivable, Modifications, Pre-Modification Recorded Investment			449
Financing Receivable, Modifications, Post-Modification Recorded Investment			430
Commercial Real Estate
Financing Receivable, Modifications, Number of Contracts			5	[1]
Financing Receivable, Modifications, Pre-Modification Recorded Investment			9,022	[1]
Financing Receivable, Modifications, Post-Modification Recorded Investment			8,671	[1]
Land
Financing Receivable, Modifications, Number of Contracts			3	[1]
Financing Receivable, Modifications, Pre-Modification Recorded Investment			2,340	[1]
Financing Receivable, Modifications, Post-Modification Recorded Investment			1,957	[1]
Multi-Family
Financing Receivable, Modifications, Number of Contracts	1	[1]	1	[1]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	2,562	[1]	3,277	[1]
Financing Receivable, Modifications, Post-Modification Recorded Investment	2,532	[1]	3,081	[1]
Total consumer
Financing Receivable, Modifications, Number of Contracts	1		2
Financing Receivable, Modifications, Pre-Modification Recorded Investment	43		1,971
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 42		$ 1,702

[1] For the six months ended September 30, 2012, the original loan was a $5.0 million real estate construction loan restructured into one $3.3 million multi-family, one $875,000 commercial real estate and one $800,000 land loan based upon collateral securing the restructured loans.