Note 11: Fair Value Measurements: Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
US Government-sponsored Enterprises Debt Securities
Fair value on a recurring basis	$ 46,190	$ 9,385
US States and Political Subdivisions Debt Securities
Fair value on a recurring basis	50,060	41,612
Other Debt Obligations
Fair value on a recurring basis	5,059	5,152
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Fair value on a recurring basis	$ 96,563	$ 90,176