Note 12: Fair Value Measurements: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	$ 5,031	$ 7,270
US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	41,785	42,783
Other Debt Obligations
Fair value on a recurring basis	5,034	5,053
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	$ 119,156	$ 110,429