Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	[1]	Jun. 30, 2017
Finite Lived Intangible Assets [Line Items]
Intangible assets	$ 433,736		$ 669,248
Less accumulated amortization	(199,412)		(433,877)
Total intangible assets, net	234,324		235,371
Customer contracts and related customer relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets	419,571		635,895
Less accumulated amortization	(190,590)		(402,934)
Acquired technologies
Finite Lived Intangible Assets [Line Items]
Intangible assets	13,361		28,503
Less accumulated amortization	(8,401)		(26,542)
Covenants not to compete
Finite Lived Intangible Assets [Line Items]
Intangible assets			3,305
Less accumulated amortization			(3,288)
Other
Finite Lived Intangible Assets [Line Items]
Intangible assets	804		1,545
Less accumulated amortization	$ (421)		$ (1,113)

[1] During the nine months ended March 31, 2018, the Company wrote off $263.9 million in fully amortized intangible assets.