Goodwill and Intangible Assets (Schedule of Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Net	$ 32,013		$ 32,013		$ 33,743
Affiliate relationships estimated useful life			24 years
Finite Lived Intangible Assets, Amortization Expense	865	$ 865	$ 1,730	$ 1,730
Affiliate Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Affiliate relationships	83,044		83,044		83,044
Less: accumulated amortization	(51,031)		(51,031)		(49,301)
Net	$ 32,013		$ 32,013		$ 33,743