Allowance for Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Sep. 30, 2011
Financing Receivable, Modifications, Number of Contracts	13		13
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 17,059		$ 7,039
Financing Receivable, Modifications, Post-Modification Recorded Investment	15,841		5,979
Commercial business
Financing Receivable, Modifications, Number of Contracts	2		10
Financing Receivable, Modifications, Pre-Modification Recorded Investment	449		3,362
Financing Receivable, Modifications, Post-Modification Recorded Investment	430		3,230
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]	2	[1]
Financing Receivable, Modifications, Pre-Modification Recorded Investment	3,277	[1]	3,322	[1]
Financing Receivable, Modifications, Post-Modification Recorded Investment	3,081	[1]	2,441	[1]
Total consumer
Financing Receivable, Modifications, Number of Contracts	2		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	1,971		355
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,702		$ 308

[1] 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 restricted loans.