Note 3: Securities: Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Investment and mortgage backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 27,957	$ 48,634
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	263	406
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	17,788	3,701
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	690	634
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	45,745	52,335
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	953	1,040
US Government-sponsored Enterprises Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	3,482
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	15
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,482
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	15
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,103	12,341
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	48	127
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	6,683	256
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	73	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	11,786	12,597
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	121	127
Other Debt Obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	56	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,206	1,160
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	542	598
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,262	1,160
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	542	598
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	19,316	29,836
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	200	267
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	9,899	2,285
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	75	36
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	29,215	32,121
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 275	$ 303