Consolidated Statements of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net revenues	$ 53,090	$ 49,804	$ 107,030	$ 99,232
Cost of revenues	28,152	32,232	59,507	61,270
Gross margin	24,938	17,572	47,523	37,962
Operating expenses:
Selling, general and administrative	14,753	14,574	29,854	29,107
Research and development	10,231	7,588	19,575	17,627
Amortization of intangible assets	1,927	2,230	4,035	4,018
Restructuring and other charges	97	217	82	5,201
Acquisition costs and other related expenses	0	42	0	272
Total operating expenses	27,008	24,651	53,546	56,225
Loss from operations	(2,070)	(7,079)	(6,023)	(18,263)
Interest income	3	2	4	4
Interest expense	(11)	(15)	(26)	(23)
Other income, net	440	116	872	455
Loss before income taxes	(1,638)	(6,976)	(5,173)	(17,827)
Tax benefit	(593)	(2,192)	(1,872)	(5,843)
Net loss	(1,045)	(4,784)	(3,301)	(11,984)
Basic net loss per share: (in dollars per share)	$ (0.03)	$ (0.16)	$ (0.11)	$ (0.40)
Diluted net loss per share: (in dollars per share)	$ (0.03)	$ (0.16)	$ (0.11)	$ (0.40)
Weighted-average shares outstanding:
Basic (in shares)	30,988	30,107	30,820	29,995
Diluted (in shares)	30,988	30,107	30,820	29,995
Comprehensive loss:
Net loss	(1,045)	(4,784)	(3,301)	(11,984)
Foreign currency translation adjustments	(74)	(132)	(15)	(100)
Total comprehensive loss	$ (1,119)	$ (4,916)	$ (3,316)	$ (12,084)