Reconciles Net Income (loss), Most Directly Comparable GAAP Financial Measure to Adjusted EBITDA (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income (loss)	$ 788	$ 5,245	$ (11,196)	$ 16,943
Interest expense, net	5	5	24	14
Tax (benefit) provision	(2,232)	2,380	(8,075)	8,522
Depreciation	2,068	1,970	6,470	5,730
Amortization of intangible assets	2,356	1,143	6,374	2,651
Restructuring and other charges	228		5,429		2,821
Acquisition costs and other related expenses	32	145	304	763
Fair value adjustments from purchase accounting	96	(223)	2,293	(245)
Stock-based compensation expense	1,901	1,342	6,265	5,194
Adjusted EBITDA	$ 5,242	$ 12,007	$ 7,888	$ 39,572