Loans Receivable and The Allowance For Loan Losses: Schedule of Newly Restructured Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Recorded Investment | Consumer
Number of Contracts	1	2	2	3
Pre-modification Outstanding Recorded Investment	$ 132	$ 32	$ 284	$ 32
Post-modification Outstanding Recorded Investment	132	32	284	32
Recorded Investment | Commercial real estate investment properties
Number of Contracts	1	2	3	3
Pre-modification Outstanding Recorded Investment	99	155	974	1,977
Post-modification Outstanding Recorded Investment	99	155	974	1,977
Recorded Investment | Multifamily real estate
Number of Contracts	2	1	2	2
Pre-modification Outstanding Recorded Investment	5,054	1,635	5,054	1,997
Post-modification Outstanding Recorded Investment	5,054	1,635	5,054	1,997
Recorded Investment | One- to four-family construction
Number of Contracts	10	3	11	3
Pre-modification Outstanding Recorded Investment	2,664	3,043	3,146	3,042
Post-modification Outstanding Recorded Investment	2,664	3,043	3,146	3,042
Recorded Investment | Commercial business
Number of Contracts	5	2	10	2
Pre-modification Outstanding Recorded Investment	1,289	180	2,195	180
Post-modification Outstanding Recorded Investment	1,289	180	2,195	180
Recorded Investment | One- to four-family residential
Number of Contracts	2	2	17	3
Pre-modification Outstanding Recorded Investment	621	502	9,073	769
Post-modification Outstanding Recorded Investment	621	502	9,073	769
Recorded Investment | Commercial real estate owner occupied
Number of Contracts				1
Pre-modification Outstanding Recorded Investment				189
Post-modification Outstanding Recorded Investment				189
Total newly restructured loans
Number of Contracts	21	12	45	17
Pre-modification Outstanding Recorded Investment	9,859	5,547	20,726	8,186
Post-modification Outstanding Recorded Investment	$ 9,859	$ 5,547	$ 20,726	$ 8,186