Related Party Transactions (Ownership Percentage) (Details) - $ / shares	Dec. 31, 2019	Jun. 30, 2019
Related Party Ownership Percentage [Line Items]
Aggregate Voting Power Held By Related Party	76.10%
Class A Common Stock [Member]
Related Party Ownership Percentage [Line Items]
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Percentage of Common Stock Owned by Related Party	6.30%
Common Class B [Member]
Related Party Ownership Percentage [Line Items]
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Percentage of Common Stock Owned by Related Party	100.00%