Stockholders' Equity - Stock Repurchase Program (Details) - USD ($) shares in Thousands			3 Months Ended
	Oct. 14, 2019	Sep. 30, 2019	Sep. 30, 2019	Aug. 08, 2019
Subsidiary, Sale of Stock [Line Items]
Stock issued period value			$ 104,849,000
Common Class A
Subsidiary, Sale of Stock [Line Items]
Amount authorized to be repurchased				$ 150,000,000
Stock repurchased period (in shares)		5,130	6,150
Stock issued period value		$ 87,921,000	$ 104,849,000
Stock repurchase program		$ 16,928,000	$ 16,928,000
Subsequent Event | Common Class A
Subsidiary, Sale of Stock [Line Items]
Amount authorized to be repurchased	$ 300,000,000
Stock repurchase program, period increase	$ 150,000,000