Note 10: Subordinated Debt (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Aug. 31, 2014	Oct. 31, 2013	Dec. 31, 2018	Jun. 30, 2019
Ozarks Legacy Community Financial, Inc
Assumed floating rate junior subordinated debt securities		$ 3,100
Ozarks Legacy Community Financial, Inc | Reported Value Measurement
Assumed floating rate junior subordinated debt securities			$ 2,600	$ 2,600
Peoples Service Company, Inc
Assumed floating rate junior subordinated debt securities	$ 6,500
Peoples Service Company, Inc | Reported Value Measurement
Assumed floating rate junior subordinated debt securities			$ 5,200	$ 5,200