Operating Segment, Geographic Information and Significant Customers - Summary of Performance of Operations by Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ (60,417)	$ (57,089)	$ (118,826)	$ (111,150)
Adjusted EBITDA	12,579	10,707	24,420	18,710
MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(53,015)	(51,806)	(103,021)	(100,362)
MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(7,947)	(4,767)	(15,964)	(10,147)
Segment Reconciling Items [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	545	(516)	159	(641)
Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,421	995	4,465	1,636
Intersegment Eliminations [Member] | MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,344	923	4,360	1,425
Intersegment Eliminations [Member] | MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	77	72	105	211
Operating Segments [Member] | MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(54,359)	(52,729)	(107,381)	(101,787)
Adjusted EBITDA	12,873	10,510	24,329	17,799
Operating Segments [Member] | MDS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(8,024)	(4,839)	(16,069)	(10,358)
Adjusted EBITDA	(418)	284	64	770
Segment Reconciling Items and Intersegment Eliminations [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,966	479	4,624	995
Adjusted EBITDA	$ 124	$ (87)	$ 27	$ 141