Restatement of Previously Issued Financial Statements (Condensed consolidated statements of comprehensive income, including balances originally reported, corrections and restated balances) (Detail 2) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2018		Mar. 31, 2017	Mar. 31, 2018		Mar. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	$ (267,985)	[1]	$ 5,588	$ (281,395)	[1]	$ 9,409
Comprehensive loss	(264,906)	[1]	$ 6,286	(274,108)	[1]	$ 6,959
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	(196,635)			(210,045)
Comprehensive loss	(193,556)			(202,758)
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	(71,350)			(71,350)
Comprehensive loss	$ (71,350)			$ (71,350)

[1] (as restated)