Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net revenues	$ 234,847	$ 208,729	$ 194,231
Cost of revenues	124,628	113,985	116,073
Gross margin	110,219	94,744	78,158
Operating expenses:
Selling, general and administrative	49,010	53,685	54,764
Research and development	32,554	35,693	32,604
Amortization of intangible assets	7,008	7,328	8,222
Restructuring and other charges	3,175	5,443	7,060
Acquisition costs and other related expenses	117	0	318
Total operating expenses	91,864	102,149	102,968
Income (loss) from operations	18,355	(7,405)	(24,810)
Interest income	21	9	7
Interest expense	(34)	(49)	(38)
Other income, net	453	1,532	558
Income (loss) from continuing operations before income taxes	18,795	(5,913)	(24,283)
Tax provision (benefit)	4,366	(1,841)	(10,501)
Income (loss) from continuing operations	14,429	(4,072)	(13,782)
(Loss) income from discontinued operations, net of income taxes	(4,060)	(7,353)	574
Net income (loss)	$ 10,369	$ (11,425)	$ (13,208)
Basic net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	$ 0.45	$ (0.13)	$ (0.46)
(Loss) income from discontinued operations (dollars per share)	(0.13)	(0.24)	0.02
Basic net (loss) earnings per share (dollars per share)	0.32	(0.37)	(0.44)
Diluted net earnings (loss) per share:
(Loss) income from continuing operations (dollars per share)	0.44	(0.13)	(0.46)
(Loss) income from discontinued operations (dollars per share)	(0.13)	(0.24)	0.02
Diluted net (loss) earnings per share (dollars per share)	$ 0.31	$ (0.37)	$ (0.44)
Weighted-average shares outstanding:
Basic (in shares)	32,114	31,000	30,128
Diluted (in shares)	32,939	31,000	30,128
Comprehensive income (loss):
Net income (loss)	$ 10,369	$ (11,425)	$ (13,208)
Foreign currency translation adjustments	(235)	65	(359)
Net unrealized (loss) gain on investments	0	(16)	15
Total comprehensive income (loss)	$ 10,134	$ (11,376)	$ (13,552)