Loans and Allowance For Loan Losses: Loans and Leases Receivable Troubled Debt Restructuring Policy (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Construction loans modified in troubled debt restructurings and impaired	$ 5,900,000	$ 9,000,000
Single family and multi-family residential mortgage loans modified in troubled debt restructurings and impaired	18,300,000
Commercial real estate loans modified in troubled debt restructurings and impaired	31,300,000	31,300,000
Commercial business loans modified in troubled debt restructurings and impaired	2,800,000	671,000
Consumer loans modified in troubled debt restructurings and impaired	133,000	156,000
Total troubled debt restructurings accruing interest	47,900,000	50,800,000
Residential mortgage loans modified in troubled debt restructurings and impaired		$ 17,000,000