Income Taxes - Deferred Tax Asset and Liability Policy: Valuation Allowance for Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Tax Credit Carryforward [Line Items]
Other assets	$ 49,519	$ 23,157
Deferred taxes	0	(4,799)
Change in valuation allowance for deferred tax assets, allocated to income tax expense	0	(325)	$ 87
Amount in retained earnings for bad debt reserve with no deferred tax liability	19,570	$ 19,570
Revision of Prior Period, Reclassification, Adjustment
Tax Credit Carryforward [Line Items]
Other assets	4,601
Deferred taxes	$ 4,601