Operating Segment, Geographic Information and Significant Customers - Reconciles Net Income, Most Directly Comparable GAAP Financial Measure to Adjusted EBITDA (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
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Net (loss) income	$ (2,012)	$ 788	$ (4,784)	$ (7,200)	$ 5,676	$ 5,245	$ 9,045	$ 2,653	$ (13,208)	$ 22,619	$ 18,442
Income (Loss) from Continuing Operations Attributable to Parent											18,507
Interest expense, net									31	27	45
Tax (benefit) provision	(1,879)	(2,232)	(2,192)	(3,651)	630	2,380	4,828	1,314	(9,954)	9,152	8,060
Depreciation									8,492	7,859	6,364
Amortization of intangible assets									8,717	3,799	1,984
Restructuring and other charges									7,056	2,821	0
Impairment of long-lived assets									0	0	150
Acquisition costs and other related expenses									318	1,219	412
Fair value adjustments from purchase accounting									2,293	(5,238)	(219)
Stock-based compensation expense									7,940	6,616	5,580
Adjusted EBITDA									$ 11,685	$ 48,874	$ 40,883