Equity-Based Compensation - Summary of Stock Option Transactions (Detail) - $ / shares shares in Thousands		12 Months Ended
		Jun. 30, 2018		Jun. 30, 2017		Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options, Outstanding at the beginning of the year		666	[1]	1,238	[1]	2,008
Options, Exercised		(189)		(354)		(508)
Options, Cancelled		(4)		(218)		(262)
Options, Outstanding at the end of the year	[1]	473		666		1,238
Options, Exercisable at the end of the year	[2]	470		585		945
Weighted average exercise price, Outstanding at the beginning of the year		$ 7.74	[1]	$ 9.03	[1]	$ 8.82
Weighted average exercise price, Exercised		8.04		7.78		7.34
Weighted average exercise price, Cancelled		9.04		15.00		10.75
Weighted average exercise price, Outstanding at the end of the year	[1]	$ 7.61		$ 7.74		$ 9.03

[1] The intrinsic value of options outstanding held by the Company's employees as of June 30, 2018, 2017 and 2016 was $3.7 million, $4.0 million and $3.0 million, respectively. The weighted average remaining contractual life of options outstanding as of June 30, 2018 was 4.06 years.

[2] The weighted average remaining contractual life of options exercisable as of June 30, 2018 was 4.04 years.