Derivatives Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Derivative, Amount of Hedged Item	$ 420,000		$ 420,000		$ 431,000	$ 463,000
Derivative, Fixed Interest Rate	1.63%		1.63%		2.61%
Derivative, Variable Interest Rate	3.38%		3.38%		4.36%
Interest Rate Cash Flow Hedge Liability at Fair Value	$ 13,157		$ 13,157		$ 26,179
Reclassification of interest from cash flow hedge into interest expense	$ 2,992	$ 1,017	$ 8,504	$ 2,350