Consolidated Statements Of Operations And Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Net revenues	$ 244,929	$ 228,710	$ 199,830
Cost of revenues	108,773	98,811	87,298
Gross margin	136,156	129,899	112,532
Operating expenses:
Selling, general and administrative	57,159	57,868	51,519
Research and development	45,984	44,500	41,548
Amortization of acquired intangible assets	3,799	1,984	1,710
Restructuring and other charges	2,821		231
Impairment of long-lived assets		150	211
Acquisition costs and other related expenses	1,219	412
Change in the fair value of the liability related to the LNX earn-out	(4,938)
Total operating expenses	106,044	104,914	95,219
Income from operations	30,112	24,985	17,313
Interest income	13	34	532
Interest expense	(40)	(79)	(381)
Other income, net	1,686	1,627	1,228
Income from continuing operations before income taxes (benefit)	31,771	26,567	18,692
Income taxes (benefit)	9,152	8,060	(9,377)
Income from continuing operations	22,619	18,507	28,069
(Loss) income from discontinued operations, net of income taxes		(65)	289
Net income	22,619	18,442	28,358
Basic net earnings (loss) per share:
Income from continuing operations	$ 0.77	$ 0.73	$ 1.25
(Loss) income from discontinued operations, net of income taxes			$ 0.01
Net income	$ 0.77	$ 0.73	$ 1.26
Diluted net earnings (loss) per share:
Income from continuing operations	$ 0.75	$ 0.71	$ 1.22
(Loss) income from discontinued operations, net of income taxes		$ (0.01)	$ 0.01
Net income	$ 0.75	$ 0.70	$ 1.23
Weighted-average shares outstanding:
Basic	29,477	25,322	22,559
Diluted	30,085	26,209	23,008
Comprehensive income:
Net income	22,619	18,442	28,358
Foreign currency translation adjustments	53	311	368
Net unrealized (loss) gain on investments	(2)	2	(83)
Total comprehensive income	$ 22,670	$ 18,755	$ 28,643