Deferred Compensation Agreements - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Retirement Benefits [Abstract]
Director emeritus plans expenses	$ 398	$ 410	$ 417
Director Emeritus Plans accrued expenses included in other liabilities	7,895	8,268
Expense for Board of Director plans	21	28	32
Expense for Officer Plans	783	771	519
Expense included in other liabilities for officer plans	18,743	19,499
Deferred compensation plan for officers and directors expense	208	223	$ 205
Deferred compensation plan for officers and directors expense included in other liabilities	$ 4,779	$ 4,966