Operating Segment, Geographic Information and Significant Customers - Summary of Performance of Operations by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ (65,898)	$ (59,578)	$ (184,724)	$ (170,728)
Adjusted EBITDA	14,566	11,515	38,986	30,224
MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(57,499)	(52,748)	(160,520)	(153,110)
MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(8,608)	(6,714)	(24,572)	(16,860)
Segment Reconciling Items [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	209	(116)	368	(758)
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,692	2,357	6,157	3,994
Intersegment Eliminations [Member] | MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,652	2,325	6,012	3,750
Intersegment Eliminations [Member] | MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	40	32	145	244
Operating Segments [Member] | MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(59,151)	(55,073)	(166,532)	(156,860)
Adjusted EBITDA	13,948	12,073	38,278	29,872
Operating Segments [Member] | MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(8,648)	(6,746)	(24,717)	(17,104)
Adjusted EBITDA	768	614	831	1,384
Segment Reconciling Items and Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,901	2,241	6,525	3,236
Adjusted EBITDA	$ (150)	$ (1,172)	$ (123)	$ (1,032)