Note 12: Business Combinations: Schedule of Business Acquisitions, by Acquisition (Details) $ in Thousands	Feb. 23, 2018 USD ($)
Identifiable net assets
Business Combination, Consideration Transferred	$ 12,367
Identifiable net assets | Loans Receivable Gross
Business Combination, Consideration Transferred	68,258
Identifiable net assets | Total Consideration
Business Combination, Consideration Transferred	16,815
Identifiable net assets | Deposits
Business Combination, Consideration Transferred	(68,152)
Identifiable net assets | Federal Home Loan Bank Advances
Business Combination, Consideration Transferred	(5,344)
Identifiable net assets | Miscellaneous other liabilities
Business Combination, Consideration Transferred	(683)
Identifiable net assets | Common stock, at fair value
Business Combination, Consideration Transferred	12,955
Identifiable net assets | Cash
Business Combination, Consideration Transferred	3,860
Identifiable net assets | Other than Securities Investment
Business Combination, Consideration Transferred	5,557
Cash and Cash Equivalents
Business Combination, Consideration Transferred	2,359
Interest-bearing time deposits
Business Combination, Consideration Transferred	1,450
Property, Plant and Equipment
Business Combination, Consideration Transferred	3,409
Bank Owned Life Insurance
Business Combination, Consideration Transferred	2,271
Indefinite-lived Intangible Assets
Business Combination, Consideration Transferred	1,345
Miscellaneous other assets
Business Combination, Consideration Transferred	1,897
Goodwill
Business Combination, Consideration Transferred	$ 4,448