Note 1: Nature of Operations and Summary of Significant Accounting Policies: Earnings Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 33,729	$ 48,706	$ 30,269	$ 33,729	$ 48,706	$ 30,269
Net Income Available to Common Shareholders	33,150	48,098	26,259	33,150	48,098	26,259
Net Income from Continuing Operations	33,729	44,087	29,657	33,729	44,087	29,657
Basic	$ 2.43	$ 3.55	$ 1.95	$ 2.43	$ 3.55	$ 1.95
Diluted	$ 2.42	$ 3.54	$ 1.93	$ 2.42	$ 3.54	$ 1.93
Continuing Operations Basic	$ 2.43	$ 3.21	$ 1.91	$ 2.43	$ 3.21	$ 1.91
Continuing Operations Diluted	$ 2.42	$ 3.20	$ 1.89	$ 2.42	$ 3.20	$ 1.89
Earnings Per Share Basic and Diluted
Net income				33,729	48,706	30,269
Net Income Available to Common Shareholders				33,150	48,098	26,259
Net Income from Continuing Operations				33,729	44,087	29,657
Net income from continuing operations available to common shareholders				$ 33,150	$ 43,479	$ 25,647
Weighted Average Number of Shares Outstanding, Basic				13,635	13,534	13,462
Average common share stock options and warrants outstanding				80	58	164
Earnings per share, diluted
Weighted Average Number of Shares Outstanding, Diluted				13,715	13,592	13,626
Diluted				$ 2.42	$ 3.54	$ 1.93
Continuing Operations Diluted				$ 2.42	$ 3.20	$ 1.89
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share					$ 0.34	$ 0.04
Earnings per share, basic
Basic				$ 2.43	$ 3.55	$ 1.95
Continuing Operations Basic				$ 2.43	$ 3.21	$ 1.91
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share					$ 0.34	$ 0.04