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, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net revenues	$ 59,578	$ 53,393	$ 170,728	$ 155,051
Cost of revenues	31,660	29,017	91,776	84,788
Gross margin	27,918	24,376	78,952	70,263
Operating expenses:
Selling, general and administrative	11,842	12,363	36,809	40,628
Research and development	8,115	8,166	23,961	27,620
Amortization of intangible assets	1,744	1,777	5,268	5,565
Restructuring and other charges	27	3,477	2,457	3,559
Acquisition costs and other related expenses	33	0	33	0
Total operating expenses	21,761	25,783	68,528	77,372
Income (loss) from operations	6,157	(1,407)	10,424	(7,109)
Interest income	6	2	13	6
Interest expense	(7)	(11)	(23)	(37)
Other income, net	7	337	399	1,209
Income (loss) from continuing operations before income taxes	6,163	(1,079)	10,813	(5,931)
Tax provision (benefit)	1,469	(809)	2,516	(2,570)
Income (loss) from continuing operations	4,694	(270)	8,297	(3,361)
Loss from discontinued operations, net of income taxes	(1,019)	(308)	(3,858)	(518)
Net income (loss)	3,675	(578)	4,439	(3,879)
Basic net loss per share: (in dollars per share)	$ 0.14	$ (0.01)	$ 0.26	$ (0.11)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	$ (0.03)	$ (0.01)	$ (0.12)	$ (0.02)
Earnings Per Share, Basic	$ 0.11	$ (0.02)	$ 0.14	$ (0.13)
Diluted net loss per share: (in dollars per share)	$ 0.14	$ (0.01)	$ 0.25	$ (0.11)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	$ (0.03)	$ (0.01)	$ (0.12)	$ (0.02)
Earnings Per Share, Diluted	$ 0.11	$ (0.02)	$ 0.13	$ (0.13)
Weighted-average shares outstanding:
Basic (in shares)	32,298	31,156	32,001	30,932
Diluted (in shares)	33,233	31,156	32,953	30,932
Comprehensive income (loss):
Net income (loss)	3,675	(578)	4,439	(3,879)
Foreign currency translation adjustments	0	23	(208)	8
Total comprehensive income (loss)	$ 3,675	$ (555)	$ 4,231	$ (3,871)