Note 3: Securities: Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Investment and mortgage backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 85,278	$ 48,634
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,549	406
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	32,742	3,701
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	1,361	634
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	118,020	52,335
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	2,910	1,040
US Government-sponsored Enterprises Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	7,943	6,457
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	65	12
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,443	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	55	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,386	6,457
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	120	12
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	19,157	12,341
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	292	127
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	8,215	256
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	263	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	27,372	12,597
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	555	127
Other Debt Obligations
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	985	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	7	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,069	1,160
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	228	598
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	2,054	1,160
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	235	598
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	57,193	29,836
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,185	267
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	21,015	2,285
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	815	36
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	78,208	32,121
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 2,000	$ 303