Operating Segment, Geographic Information and Significant Customers - Summary of Performance of Operations by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									$ 208,791	$ 244,929	$ 228,710
Intersegment revenues									0	0	0
Net revenues	55,436	54,123	49,804	49,428	60,859	66,989	67,959	49,122	208,791	244,929	228,710
Adjusted EBITDA									11,685	48,874	40,883
MCE
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									152,606	203,979	217,423
Intersegment revenues									13,744	12,476	6,260
Net revenues									166,350	216,455	223,683
Adjusted EBITDA									2,812	40,521	42,104
MDIS
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									56,051	40,590	11,415
Intersegment revenues									12	3	52
Net revenues									56,063	40,593	11,467
Adjusted EBITDA									8,842	8,205	(714)
Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues to unaffiliated customers									134	360	(128)
Intersegment revenues									(13,756)	(12,479)	(6,312)
Net revenues									(13,622)	(12,119)	(6,440)
Adjusted EBITDA									$ 31	$ 148	$ (507)