Gross Carrying Amount and Accumulated Amortization of Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 227,169	$ 211,870
Accumulated Amortization	(89,899)	(86,801)
Net Book Value	137,270	125,069
Technology and Patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	76,245	66,812
Accumulated Amortization	(34,084)	(32,979)
Net Book Value	42,161	33,833
Trademarks
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,757	15,882
Accumulated Amortization	(1,503)	(1,471)
Net Book Value	14,254	14,411
Customer Lists
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	133,594	127,603
Accumulated Amortization	(52,744)	(50,792)
Net Book Value	80,850	76,811
Other
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,573	1,573
Accumulated Amortization	(1,568)	(1,559)
Net Book Value	$ 5	$ 14