Note 14: Fair Value Measurement: Fair Value, Assets Measured on Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
US Government Agencies Debt Securities
Fair Value Measured on Recurring Basis	$ 18,937	$ 17,255
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair Value Measured on Recurring Basis	276,627	367,578
US States and Political Subdivisions Debt Securities
Fair Value Measured on Recurring Basis	126,547	122,724
Equity Securities
Fair Value Measured on Recurring Basis	3,045	2,869
Mortgage Servicing Rights
Fair Value Measured on Recurring Basis	189	211
Interest Rate Swap Asset
Fair Value Measured on Recurring Basis	2,050	2,544
Interest Rate Swap Liability
Fair Value Measured on Recurring Basis	(1,489)	(1,613)
Small Business Administration Loan Pools
Fair Value Measured on Recurring Basis		44,855
Fair Value, Inputs, Level 2 | US Government Agencies Debt Securities
Fair Value Measured on Recurring Basis	18,937	17,255
Fair Value, Inputs, Level 2 | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair Value Measured on Recurring Basis	276,627	367,578
Fair Value, Inputs, Level 2 | US States and Political Subdivisions Debt Securities
Fair Value Measured on Recurring Basis	126,547	122,724
Fair Value, Inputs, Level 2 | Equity Securities
Fair Value Measured on Recurring Basis	3,045	2,869
Fair Value, Inputs, Level 2 | Small Business Administration Loan Pools
Fair Value Measured on Recurring Basis		44,855
Fair Value, Inputs, Level 3 | Mortgage Servicing Rights
Fair Value Measured on Recurring Basis	189	211
Fair Value, Inputs, Level 3 | Interest Rate Swap Asset
Fair Value Measured on Recurring Basis	2,050	2,544
Fair Value, Inputs, Level 3 | Interest Rate Swap Liability
Fair Value Measured on Recurring Basis	$ (1,489)	$ (1,613)