Note 7: Loans and Allowance For Loan Losses: Loans and Leases Receivable Troubled Debt Restructuring Policy (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Construction Loans Modified in Troubled Debt Restructurings and Impaired	$ 8,000,000	$ 9,000,000
Single Family and Multi-Family Residential Mortgage Loans Modified in Troubled Debt Restructurings and Impaired	18,200,000	17,000,000
Commercial Real Estate Loans Modified in Troubled Debt Restructurings and Impaired	31,800,000	31,300,000
Commercial Business Loans Modified in Troubled Debt Restructurings and Impaired	3,100,000	671,000
Consumer Loans Modified in Troubled Debt Restructurings and Impaired	140,000	156,000
Total Troubled Debt Restructurings Accruing Interest	51,800,000	50,800,000
Number of Nonowner Occupied Residential Mortgage Loans Modified as Troubled Debt Restructurings with Payment Defaults	5
Nonowner Occupied Residential Mortgage Loans Modified as Troubled Debt Restructurings with Payment Defaults	605,000
Number of Commercial Real Estate Loans Modified as Troubled Debt Restructurings with Payment Defaults	5
Commercial Real Estate Loans Modified as Troubled Debt Restructurings with Payment Defaults	5,800,000
Number of Consumer Loans Modified in Troubled Debt Restructurings with Payment Defaults	1
Consumer Loans Modified in Troubled Debt Restructurings with Payment Defaults	$ 20,000