Note 21: Quarterly Financial Data (unaudited): Schedule of Quarterly Financial Information (Details) - Unaudited - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Quarterly interest income	$ 14,261	$ 13,849	$ 14,235	$ 13,972	$ 13,816	$ 13,909	$ 14,357	$ 13,219	$ 10,752	$ 10,316	$ 10,238	$ 9,165
Quarterly interest expense	2,423	2,341	2,335	2,266	2,270	2,211	2,195	2,090	1,904	1,882	1,907	1,792
Quarterly net interest income	11,838	11,508	11,900	11,706	11,546	11,698	12,162	11,129	8,848	8,434	8,331	7,373
Quarterly provision for loan and lease losses	817	563	496	618	659	837	862	827	598	253	295	500
Quarterly noninterest income	2,587	2,178	2,791	2,202	2,398	2,094	2,187	1,980	1,724	1,462	1,666	1,280
Quarterly noninterest expense	8,273	8,257	8,166	7,990	8,002	8,091	8,590	7,602	6,234	6,619	6,226	4,567
Quarterly income before income taxes	5,335	4,866	6,029	5,300	5,283	4,864	4,897	4,680	3,740	3,024	3,476	3,586
Quarterly income taxes	1,653	1,544	1,820	1,665	1,718	1,497	1,460	1,381	984	781	957	1,023
Quarterly net income	$ 3,682	$ 3,322	$ 4,209	$ 3,635	$ 3,565	$ 3,367	$ 3,437	$ 3,299	$ 2,756	$ 2,243	$ 2,519	$ 2,563