Acquired Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 57,225	$ 38,725
Accumulated Amortization	(15,430)	(13,642)
Net Carrying Amount	41,795	25,083
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	43,770	26,770
Accumulated Amortization	(10,186)	(9,217)
Net Carrying Amount	33,584	17,553
Weighted Average Useful Life	6 years 6 months	6 years 10 months 24 days
Licensing agreements and patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,095	4,095
Accumulated Amortization	(2,521)	(2,365)
Net Carrying Amount	1,574	1,730
Weighted Average Useful Life	5 years 4 months 24 days	5 years 4 months 24 days
Completed Technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,570	5,570
Accumulated Amortization	(1,277)	(1,007)
Net Carrying Amount	4,293	4,563
Weighted Average Useful Life	5 years 3 months 18 days	5 years 3 months 18 days
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	990	990
Accumulated Amortization	(142)	(95)
Net Carrying Amount	848	895
Weighted Average Useful Life	6 years	6 years
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,300	800
Accumulated Amortization	(910)	(588)
Net Carrying Amount	1,390	212
Weighted Average Useful Life	1 year 2 months 12 days	2 years
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	500	500
Accumulated Amortization	(394)	(370)
Net Carrying Amount	$ 106	$ 130
Weighted Average Useful Life	5 years	5 years