Consolidated Statements of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Net revenues	$ 55,500	$ 54,123	$ 162,530	$ 153,355
Cost of revenues	30,373	31,549	89,880	92,819
Gross margin	25,127	22,574	72,650	60,536
Operating expenses:
Selling, general and administrative	13,101	13,918	42,955	43,025
Research and development	8,377	7,503	27,952	25,130
Amortization of intangible assets	1,901	2,356	5,936	6,374
Restructuring and other charges	3,502	228	3,584	5,429
Acquisition costs and other related expenses	0	32	0	304
Total operating expenses	26,881	24,037	80,427	80,262
Loss from operations	(1,754)	(1,463)	(7,777)	(19,726)
Interest income	2	2	6	6
Interest expense	(11)	(7)	(37)	(30)
Other income, net	337	24	1,209	479
Loss before income taxes	(1,426)	(1,444)	(6,599)	(19,271)
Tax benefit	(848)	(2,232)	(2,720)	(8,075)
Net (loss) income	(578)	788	(3,879)	(11,196)
Basic net loss per share: (in dollars per share)	$ (0.02)	$ 0.03	$ (0.13)	$ (0.37)
Diluted net loss per share: (in dollars per share)	$ (0.02)	$ 0.03	$ (0.13)	$ (0.37)
Weighted-average shares outstanding:
Basic (in shares)	31,156	30,235	30,932	30,075
Diluted (in shares)	31,156	30,410	30,932	30,075
Comprehensive (loss) income:
Net (loss) income	(578)	788	(3,879)	(11,196)
Foreign currency translation adjustments	23	(173)	8	(273)
Total comprehensive (loss) income	$ (555)	$ 615	$ (3,871)	$ (11,469)