Note 26: Summary of Unaudited Quarterly Operating Results: Schedule of Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income													$ 46,502	$ 43,529	$ 33,729
Quarterly Operating Results
Interest Income, Operating	$ 44,956	$ 45,755	$ 45,734	$ 47,906	$ 49,077	$ 47,607	$ 44,384	$ 42,294	$ 44,939	$ 43,019	$ 43,481	$ 47,356
Interest Expense Operating	4,261	4,230	3,725	3,781	3,559	3,501	4,413	4,328	4,444	4,555	4,980	5,224
Provision for Other Losses	1,216	1,703	1,300	1,300	53	945	1,462	1,691	2,813	2,677	3,671	8,225
Net realized gain (losses) and impairment on available for sale securities operating		2			1,176	321	569	73	2	110	97	34
Noninterest Income, Other Operating Income	5,060	5,120	3,457	(56)	1,398	1,778	10,631	924	(865)	929	2,327	2,924
Other Noninterest Expense	29,145	30,014	27,949	27,242	31,168	29,398	34,399	25,894	26,830	26,156	26,712	25,920
Provision for income taxes	3,744	3,732	4,214	3,874	3,628	3,951	3,687	2,487	1,315	2,121	2,221	2,517
Net income	11,650	11,196	12,003	11,653	12,067	11,590	11,054	8,818	8,672	8,439	8,224	8,394
Net income available to common shareholders	$ 11,531	$ 11,051	$ 11,858	$ 11,508	$ 11,923	$ 11,445	$ 10,909	$ 8,673	$ 8,528	$ 8,294	$ 8,079	$ 8,249
Earnings per share operating results diluted	$ 0.81	$ 0.79	$ 0.85	$ 0.83	$ 0.86	$ 0.83	$ 0.79	$ 0.63	$ 0.62	$ 0.61	$ 0.59	$ 0.60
Net income from continuing operations results					$ 12,067	$ 11,590	$ 11,054	$ 8,818	$ 8,672	$ 8,439	$ 8,224	$ 8,394