Note 9: Premises and Equipment: Calculated Amount of Right of Use Assets and Lease Liabilities (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Financial Condition
Right of Use Asset, Operating Leases		$ 8,758	$ 8,888	$ 8,758	$ 8,888
Liability, Operating Leases		8,869	8,952	8,869	8,952
Statement of Income
Operating Lease Costs Classified as Occupancy and Equipment Expense	[1]	397	344	1,182	1,092
Supplemental Cash Flow Information
Operating Cash Flows from Operating Leases	[2]	$ 391	$ 326	1,149	1,028
Operating leases	[3]			$ 972	$ 9,538

[1] Operating lease costs classified as occupancy and equipment expense (Includes short-term lease costs and amortization of right of use asset)

[2] Cash paid for amounts included in the measurement of lease liabilities

[3] Right of use assets obtained in exchange for lease obligations