Note 11: Fair Value Measurements: Fair Value Option, Disclosures (Details) - Fair Value, Inputs, Level 3 - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Jun. 30, 2018
Foreclosed and Repossessed Assets
Fair Value Asset Liability Measured On Nonrecurring Basis With Unobservable Inputs	$ 1,730	$ 122
Foreclosed and Repossessed Assets | Third party appraisal
Fair Value Measurements Nonrecurring Valuation Technique	Third party appraisal	Third party appraisal
Foreclosed and Repossessed Assets | Third party appraisal | Marketability discount
Fair Value Measurements Nonrecurring Unobservable Inputs	Marketability discount	Marketability discount
Fair Value Measurements Nonrecurring Range of discounts Applied	8.0% - 50.3%	11.3% - 11.3%
Fair Value Measurements Nonrecurring Weighted Average Discount Applied	43.7%	11.3%
Impaired loans (collateral dependent)
Fair Value Asset Liability Measured On Nonrecurring Basis With Unobservable Inputs		$ 490
Fair Value Measurements Nonrecurring Range of discounts Applied		n/a
Impaired loans (collateral dependent) | Discount to reflect realizable value
Fair Value Measurements Nonrecurring Unobservable Inputs		Discount to reflect realizable value
Impaired loans (collateral dependent) | Internal Valuation
Fair Value Measurements Nonrecurring Valuation Technique		Internal Valuation