Note 10: Subordinated Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2013	Sep. 30, 2020	Jun. 30, 2020
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		$ 2,700	$ 2,700
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		$ 5,300	$ 5,300