Note 12: Fair Value Measurements: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($)	Mar. 31, 2020	Jun. 30, 2019
US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	$ 2,303	$ 7,270
US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	38,583	42,783
Other Debt Obligations
Fair value on a recurring basis	4,964	5,053
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	134,742	110,429
Fair Value, Inputs, Level 1 | US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 1 | US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 1 | Other Debt Obligations
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 1 | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 2 | US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	2,303	7,270
Fair Value, Inputs, Level 2 | US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	38,583	42,783
Fair Value, Inputs, Level 2 | Other Debt Obligations
Fair value on a recurring basis	4,964	5,053
Fair Value, Inputs, Level 2 | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	134,742	110,429
Fair Value, Inputs, Level 3 | US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 3 | US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 3 | Other Debt Obligations
Fair value on a recurring basis	0	0
Fair Value, Inputs, Level 3 | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	$ 0	$ 0